Add timestamp to messages

packages/agent/src/agent.ts

@@ -159,6 +159,7 @@ export class Agent {
 			role: "user",
 			content,
 			attachments: attachments?.length ? attachments : undefined,
+			timestamp: Date.now(),
 		};
 
 		this.abortController = new AbortController();
@@ -260,6 +261,7 @@ export class Agent {
 				},
 				stopReason: this.abortController?.signal.aborted ? "aborted" : "error",
 				errorMessage: err?.message || String(err),
+				timestamp: Date.now(),
 			};
 			this.appendMessage(msg as AppMessage);
 			this.patch({ error: err?.message || String(err) });

packages/agent/src/transports/AppTransport.ts

@@ -46,6 +46,7 @@ function streamSimpleProxy(
 				cacheWrite: 0,
 				cost: { input: 0, output: 0, cacheRead: 0, cacheWrite: 0, total: 0 },
 			},
+			timestamp: Date.now(),
 		};
 
 		let reader: ReadableStreamDefaultReader<Uint8Array> | undefined;

packages/agent/test/agent.test.ts

@@ -86,7 +86,7 @@ describe("Agent", () => {
 		expect(agent.state.tools).toBe(tools);
 
 		// Test replaceMessages
-		const messages = [{ role: "user" as const, content: "Hello" }];
+		const messages = [{ role: "user" as const, content: "Hello", timestamp: Date.now() }];
 		agent.replaceMessages(messages);
 		expect(agent.state.messages).toEqual(messages);
 		expect(agent.state.messages).not.toBe(messages); // Should be a copy
@@ -107,7 +107,7 @@ describe("Agent", () => {
 			transport: new ProviderTransport(),
 		});
 
-		const message = { role: "user" as const, content: "Queued message" };
+		const message = { role: "user" as const, content: "Queued message", timestamp: Date.now() };
 		await agent.queueMessage(message);
 
 		// The message is queued but not yet in state.messages

packages/ai/src/agent/agent-loop.ts

@@ -223,6 +223,7 @@ async function executeToolCalls<T>(
 			output: typeof resultOrError === "string" ? resultOrError : resultOrError.output,
 			details: typeof resultOrError === "string" ? ({} as T) : resultOrError.details,
 			isError,
+			timestamp: Date.now(),
 		};
 
 		results.push(toolResultMessage);

packages/ai/src/models.generated.ts

@@ -5,6 +5,23 @@ import type { Model } from "./types.js";
 
 export const MODELS = {
 	anthropic: {
+		"claude-opus-4-0": {
+			id: "claude-opus-4-0",
+			name: "Claude Opus 4 (latest)",
+			api: "anthropic-messages",
+			provider: "anthropic",
+			baseUrl: "https://api.anthropic.com",
+			reasoning: true,
+			input: ["text", "image"],
+			cost: {
+				input: 15,
+				output: 75,
+				cacheRead: 1.5,
+				cacheWrite: 18.75,
+			},
+			contextWindow: 200000,
+			maxTokens: 32000,
+		} satisfies Model<"anthropic-messages">,
 		"claude-3-5-sonnet-20241022": {
 			id: "claude-3-5-sonnet-20241022",
 			name: "Claude Sonnet 3.5 v2",
@@ -22,6 +39,40 @@ export const MODELS = {
 			contextWindow: 200000,
 			maxTokens: 8192,
 		} satisfies Model<"anthropic-messages">,
+		"claude-opus-4-1": {
+			id: "claude-opus-4-1",
+			name: "Claude Opus 4.1 (latest)",
+			api: "anthropic-messages",
+			provider: "anthropic",
+			baseUrl: "https://api.anthropic.com",
+			reasoning: true,
+			input: ["text", "image"],
+			cost: {
+				input: 15,
+				output: 75,
+				cacheRead: 1.5,
+				cacheWrite: 18.75,
+			},
+			contextWindow: 200000,
+			maxTokens: 32000,
+		} satisfies Model<"anthropic-messages">,
+		"claude-haiku-4-5": {
+			id: "claude-haiku-4-5",
+			name: "Claude Haiku 4.5 (latest)",
+			api: "anthropic-messages",
+			provider: "anthropic",
+			baseUrl: "https://api.anthropic.com",
+			reasoning: true,
+			input: ["text", "image"],
+			cost: {
+				input: 1,
+				output: 5,
+				cacheRead: 0.1,
+				cacheWrite: 1.25,
+			},
+			contextWindow: 200000,
+			maxTokens: 64000,
+		} satisfies Model<"anthropic-messages">,
 		"claude-3-5-sonnet-20240620": {
 			id: "claude-3-5-sonnet-20240620",
 			name: "Claude Sonnet 3.5",
@@ -39,6 +90,23 @@ export const MODELS = {
 			contextWindow: 200000,
 			maxTokens: 8192,
 		} satisfies Model<"anthropic-messages">,
+		"claude-3-5-haiku-latest": {
+			id: "claude-3-5-haiku-latest",
+			name: "Claude Haiku 3.5 (latest)",
+			api: "anthropic-messages",
+			provider: "anthropic",
+			baseUrl: "https://api.anthropic.com",
+			reasoning: false,
+			input: ["text", "image"],
+			cost: {
+				input: 0.8,
+				output: 4,
+				cacheRead: 0.08,
+				cacheWrite: 1,
+			},
+			contextWindow: 200000,
+			maxTokens: 8192,
+		} satisfies Model<"anthropic-messages">,
 		"claude-3-opus-20240229": {
 			id: "claude-3-opus-20240229",
 			name: "Claude Opus 3",
@@ -56,6 +124,23 @@ export const MODELS = {
 			contextWindow: 200000,
 			maxTokens: 4096,
 		} satisfies Model<"anthropic-messages">,
+		"claude-sonnet-4-5": {
+			id: "claude-sonnet-4-5",
+			name: "Claude Sonnet 4.5 (latest)",
+			api: "anthropic-messages",
+			provider: "anthropic",
+			baseUrl: "https://api.anthropic.com",
+			reasoning: true,
+			input: ["text", "image"],
+			cost: {
+				input: 3,
+				output: 15,
+				cacheRead: 0.3,
+				cacheWrite: 3.75,
+			},
+			contextWindow: 200000,
+			maxTokens: 64000,
+		} satisfies Model<"anthropic-messages">,
 		"claude-sonnet-4-5-20250929": {
 			id: "claude-sonnet-4-5-20250929",
 			name: "Claude Sonnet 4.5",
@@ -158,6 +243,40 @@ export const MODELS = {
 			contextWindow: 200000,
 			maxTokens: 64000,
 		} satisfies Model<"anthropic-messages">,
+		"claude-3-7-sonnet-latest": {
+			id: "claude-3-7-sonnet-latest",
+			name: "Claude Sonnet 3.7 (latest)",
+			api: "anthropic-messages",
+			provider: "anthropic",
+			baseUrl: "https://api.anthropic.com",
+			reasoning: true,
+			input: ["text", "image"],
+			cost: {
+				input: 3,
+				output: 15,
+				cacheRead: 0.3,
+				cacheWrite: 3.75,
+			},
+			contextWindow: 200000,
+			maxTokens: 64000,
+		} satisfies Model<"anthropic-messages">,
+		"claude-sonnet-4-0": {
+			id: "claude-sonnet-4-0",
+			name: "Claude Sonnet 4 (latest)",
+			api: "anthropic-messages",
+			provider: "anthropic",
+			baseUrl: "https://api.anthropic.com",
+			reasoning: true,
+			input: ["text", "image"],
+			cost: {
+				input: 3,
+				output: 15,
+				cacheRead: 0.3,
+				cacheWrite: 3.75,
+			},
+			contextWindow: 200000,
+			maxTokens: 64000,
+		} satisfies Model<"anthropic-messages">,
 		"claude-opus-4-1-20250805": {
 			id: "claude-opus-4-1-20250805",
 			name: "Claude Opus 4.1",
@@ -209,125 +328,6 @@ export const MODELS = {
 			contextWindow: 200000,
 			maxTokens: 64000,
 		} satisfies Model<"anthropic-messages">,
-		"claude-sonnet-4-0": {
-			id: "claude-sonnet-4-0",
-			name: "Claude Sonnet 4",
-			api: "anthropic-messages",
-			provider: "anthropic",
-			baseUrl: "https://api.anthropic.com",
-			reasoning: true,
-			input: ["text", "image"],
-			cost: {
-				input: 3,
-				output: 15,
-				cacheRead: 0.3,
-				cacheWrite: 3.75,
-			},
-			contextWindow: 200000,
-			maxTokens: 64000,
-		} satisfies Model<"anthropic-messages">,
-		"claude-3-7-sonnet-latest": {
-			id: "claude-3-7-sonnet-latest",
-			name: "Claude Sonnet 3.7",
-			api: "anthropic-messages",
-			provider: "anthropic",
-			baseUrl: "https://api.anthropic.com",
-			reasoning: true,
-			input: ["text", "image"],
-			cost: {
-				input: 3,
-				output: 15,
-				cacheRead: 0.3,
-				cacheWrite: 3.75,
-			},
-			contextWindow: 200000,
-			maxTokens: 64000,
-		} satisfies Model<"anthropic-messages">,
-		"claude-sonnet-4-5": {
-			id: "claude-sonnet-4-5",
-			name: "Claude Sonnet 4.5",
-			api: "anthropic-messages",
-			provider: "anthropic",
-			baseUrl: "https://api.anthropic.com",
-			reasoning: true,
-			input: ["text", "image"],
-			cost: {
-				input: 3,
-				output: 15,
-				cacheRead: 0.3,
-				cacheWrite: 3.75,
-			},
-			contextWindow: 200000,
-			maxTokens: 64000,
-		} satisfies Model<"anthropic-messages">,
-		"claude-3-5-haiku-latest": {
-			id: "claude-3-5-haiku-latest",
-			name: "Claude Haiku 3.5",
-			api: "anthropic-messages",
-			provider: "anthropic",
-			baseUrl: "https://api.anthropic.com",
-			reasoning: false,
-			input: ["text", "image"],
-			cost: {
-				input: 0.8,
-				output: 4,
-				cacheRead: 0.08,
-				cacheWrite: 1,
-			},
-			contextWindow: 200000,
-			maxTokens: 8192,
-		} satisfies Model<"anthropic-messages">,
-		"claude-haiku-4-5": {
-			id: "claude-haiku-4-5",
-			name: "Claude Haiku 4.5",
-			api: "anthropic-messages",
-			provider: "anthropic",
-			baseUrl: "https://api.anthropic.com",
-			reasoning: true,
-			input: ["text", "image"],
-			cost: {
-				input: 1,
-				output: 5,
-				cacheRead: 0.1,
-				cacheWrite: 1.25,
-			},
-			contextWindow: 200000,
-			maxTokens: 64000,
-		} satisfies Model<"anthropic-messages">,
-		"claude-opus-4-1": {
-			id: "claude-opus-4-1",
-			name: "Claude Opus 4.1",
-			api: "anthropic-messages",
-			provider: "anthropic",
-			baseUrl: "https://api.anthropic.com",
-			reasoning: true,
-			input: ["text", "image"],
-			cost: {
-				input: 15,
-				output: 75,
-				cacheRead: 1.5,
-				cacheWrite: 18.75,
-			},
-			contextWindow: 200000,
-			maxTokens: 32000,
-		} satisfies Model<"anthropic-messages">,
-		"claude-opus-4-0": {
-			id: "claude-opus-4-0",
-			name: "Claude Opus 4",
-			api: "anthropic-messages",
-			provider: "anthropic",
-			baseUrl: "https://api.anthropic.com",
-			reasoning: true,
-			input: ["text", "image"],
-			cost: {
-				input: 15,
-				output: 75,
-				cacheRead: 1.5,
-				cacheWrite: 18.75,
-			},
-			contextWindow: 200000,
-			maxTokens: 32000,
-		} satisfies Model<"anthropic-messages">,
 	},
 	google: {
 		"gemini-2.5-flash-preview-05-20": {
@@ -1804,6 +1804,23 @@ export const MODELS = {
 		} satisfies Model<"anthropic-messages">,
 	},
 	openrouter: {
+		"minimax/minimax-m2:free": {
+			id: "minimax/minimax-m2:free",
+			name: "MiniMax: MiniMax M2 (free)",
+			api: "openai-completions",
+			provider: "openrouter",
+			baseUrl: "https://openrouter.ai/api/v1",
+			reasoning: true,
+			input: ["text"],
+			cost: {
+				input: 0,
+				output: 0,
+				cacheRead: 0,
+				cacheWrite: 0,
+			},
+			contextWindow: 204800,
+			maxTokens: 131072,
+		} satisfies Model<"openai-completions">,
 		"openrouter/andromeda-alpha": {
 			id: "openrouter/andromeda-alpha",
 			name: "Andromeda Alpha",
@@ -1974,6 +1991,23 @@ export const MODELS = {
 			contextWindow: 202752,
 			maxTokens: 202752,
 		} satisfies Model<"openai-completions">,
+		"z-ai/glm-4.6:exacto": {
+			id: "z-ai/glm-4.6:exacto",
+			name: "Z.AI: GLM 4.6 (exacto)",
+			api: "openai-completions",
+			provider: "openrouter",
+			baseUrl: "https://openrouter.ai/api/v1",
+			reasoning: true,
+			input: ["text"],
+			cost: {
+				input: 0.6,
+				output: 1.9,
+				cacheRead: 0,
+				cacheWrite: 0,
+			},
+			contextWindow: 202752,
+			maxTokens: 4096,
+		} satisfies Model<"openai-completions">,
 		"deepseek/deepseek-v3.2-exp": {
 			id: "deepseek/deepseek-v3.2-exp",
 			name: "DeepSeek: DeepSeek V3.2 Exp",
@@ -2014,7 +2048,7 @@ export const MODELS = {
 			api: "openai-completions",
 			provider: "openrouter",
 			baseUrl: "https://openrouter.ai/api/v1",
-			reasoning: true,
+			reasoning: false,
 			input: ["text", "image"],
 			cost: {
 				input: 0.3,
@@ -2076,6 +2110,23 @@ export const MODELS = {
 			contextWindow: 163840,
 			maxTokens: 163840,
 		} satisfies Model<"openai-completions">,
+		"deepseek/deepseek-v3.1-terminus:exacto": {
+			id: "deepseek/deepseek-v3.1-terminus:exacto",
+			name: "DeepSeek: DeepSeek V3.1 Terminus (exacto)",
+			api: "openai-completions",
+			provider: "openrouter",
+			baseUrl: "https://openrouter.ai/api/v1",
+			reasoning: true,
+			input: ["text"],
+			cost: {
+				input: 0.27,
+				output: 1,
+				cacheRead: 0,
+				cacheWrite: 0,
+			},
+			contextWindow: 131072,
+			maxTokens: 65536,
+		} satisfies Model<"openai-completions">,
 		"alibaba/tongyi-deepresearch-30b-a3b:free": {
 			id: "alibaba/tongyi-deepresearch-30b-a3b:free",
 			name: "Tongyi DeepResearch 30B A3B (free)",
@@ -2136,13 +2187,13 @@ export const MODELS = {
 			reasoning: true,
 			input: ["text"],
 			cost: {
-				input: 0.14,
+				input: 0.15,
 				output: 1.2,
 				cacheRead: 0,
 				cacheWrite: 0,
 			},
 			contextWindow: 262144,
-			maxTokens: 4096,
+			maxTokens: 262144,
 		} satisfies Model<"openai-completions">,
 		"qwen/qwen3-next-80b-a3b-instruct": {
 			id: "qwen/qwen3-next-80b-a3b-instruct",
@@ -2263,6 +2314,23 @@ export const MODELS = {
 			contextWindow: 262144,
 			maxTokens: 262144,
 		} satisfies Model<"openai-completions">,
+		"moonshotai/kimi-k2-0905:exacto": {
+			id: "moonshotai/kimi-k2-0905:exacto",
+			name: "MoonshotAI: Kimi K2 0905 (exacto)",
+			api: "openai-completions",
+			provider: "openrouter",
+			baseUrl: "https://openrouter.ai/api/v1",
+			reasoning: false,
+			input: ["text"],
+			cost: {
+				input: 0.6,
+				output: 2.5,
+				cacheRead: 0,
+				cacheWrite: 0,
+			},
+			contextWindow: 262144,
+			maxTokens: 4096,
+		} satisfies Model<"openai-completions">,
 		"deepcogito/cogito-v2-preview-llama-70b": {
 			id: "deepcogito/cogito-v2-preview-llama-70b",
 			name: "Deep Cogito: Cogito V2 Preview Llama 70B",
@@ -2545,7 +2613,7 @@ export const MODELS = {
 			input: ["text"],
 			cost: {
 				input: 0.35,
-				output: 1.5,
+				output: 1.55,
 				cacheRead: 0,
 				cacheWrite: 0,
 			},
@@ -2654,6 +2722,23 @@ export const MODELS = {
 			contextWindow: 262144,
 			maxTokens: 262144,
 		} satisfies Model<"openai-completions">,
+		"qwen/qwen3-coder:exacto": {
+			id: "qwen/qwen3-coder:exacto",
+			name: "Qwen: Qwen3 Coder 480B A35B (exacto)",
+			api: "openai-completions",
+			provider: "openrouter",
+			baseUrl: "https://openrouter.ai/api/v1",
+			reasoning: true,
+			input: ["text"],
+			cost: {
+				input: 0.38,
+				output: 1.53,
+				cacheRead: 0,
+				cacheWrite: 0,
+			},
+			contextWindow: 262144,
+			maxTokens: 262144,
+		} satisfies Model<"openai-completions">,
 		"qwen/qwen3-235b-a22b-2507": {
 			id: "qwen/qwen3-235b-a22b-2507",
 			name: "Qwen: Qwen3 235B A22B Instruct 2507",
@@ -2824,9 +2909,9 @@ export const MODELS = {
 			contextWindow: 40000,
 			maxTokens: 40000,
 		} satisfies Model<"openai-completions">,
-		"mistralai/magistral-medium-2506": {
+		"mistralai/magistral-medium-2506:thinking": {
-			id: "mistralai/magistral-medium-2506",
+			id: "mistralai/magistral-medium-2506:thinking",
-			name: "Mistral: Magistral Medium 2506",
+			name: "Mistral: Magistral Medium 2506 (thinking)",
 			api: "openai-completions",
 			provider: "openrouter",
 			baseUrl: "https://openrouter.ai/api/v1",
@@ -2841,9 +2926,9 @@ export const MODELS = {
 			contextWindow: 40960,
 			maxTokens: 40000,
 		} satisfies Model<"openai-completions">,
-		"mistralai/magistral-medium-2506:thinking": {
+		"mistralai/magistral-medium-2506": {
-			id: "mistralai/magistral-medium-2506:thinking",
+			id: "mistralai/magistral-medium-2506",
-			name: "Mistral: Magistral Medium 2506 (thinking)",
+			name: "Mistral: Magistral Medium 2506",
 			api: "openai-completions",
 			provider: "openrouter",
 			baseUrl: "https://openrouter.ai/api/v1",
@@ -3028,6 +3113,23 @@ export const MODELS = {
 			contextWindow: 40960,
 			maxTokens: 40960,
 		} satisfies Model<"openai-completions">,
+		"qwen/qwen3-8b": {
+			id: "qwen/qwen3-8b",
+			name: "Qwen: Qwen3 8B",
+			api: "openai-completions",
+			provider: "openrouter",
+			baseUrl: "https://openrouter.ai/api/v1",
+			reasoning: true,
+			input: ["text"],
+			cost: {
+				input: 0.035,
+				output: 0.13799999999999998,
+				cacheRead: 0,
+				cacheWrite: 0,
+			},
+			contextWindow: 128000,
+			maxTokens: 20000,
+		} satisfies Model<"openai-completions">,
 		"qwen/qwen3-14b": {
 			id: "qwen/qwen3-14b",
 			name: "Qwen: Qwen3 14B",
@@ -3212,8 +3314,8 @@ export const MODELS = {
 				cacheRead: 0,
 				cacheWrite: 0,
 			},
-			contextWindow: 128000,
+			contextWindow: 96000,
-			maxTokens: 4096,
+			maxTokens: 96000,
 		} satisfies Model<"openai-completions">,
 		"mistralai/mistral-small-3.1-24b-instruct": {
 			id: "mistralai/mistral-small-3.1-24b-instruct",
@@ -3603,7 +3705,7 @@ export const MODELS = {
 				cacheRead: 0,
 				cacheWrite: 0,
 			},
-			contextWindow: 128000,
+			contextWindow: 131072,
 			maxTokens: 4096,
 		} satisfies Model<"openai-completions">,
 		"qwen/qwen-2.5-7b-instruct": {
@@ -3621,7 +3723,7 @@ export const MODELS = {
 				cacheWrite: 0,
 			},
 			contextWindow: 32768,
-			maxTokens: 16384,
+			maxTokens: 4096,
 		} satisfies Model<"openai-completions">,
 		"nvidia/llama-3.1-nemotron-70b-instruct": {
 			id: "nvidia/llama-3.1-nemotron-70b-instruct",
@@ -3708,23 +3810,6 @@ export const MODELS = {
 			contextWindow: 32768,
 			maxTokens: 4096,
 		} satisfies Model<"openai-completions">,
-		"cohere/command-r-plus-08-2024": {
-			id: "cohere/command-r-plus-08-2024",
-			name: "Cohere: Command R+ (08-2024)",
-			api: "openai-completions",
-			provider: "openrouter",
-			baseUrl: "https://openrouter.ai/api/v1",
-			reasoning: false,
-			input: ["text"],
-			cost: {
-				input: 2.5,
-				output: 10,
-				cacheRead: 0,
-				cacheWrite: 0,
-			},
-			contextWindow: 128000,
-			maxTokens: 4000,
-		} satisfies Model<"openai-completions">,
 		"cohere/command-r-08-2024": {
 			id: "cohere/command-r-08-2024",
 			name: "Cohere: Command R (08-2024)",
@@ -3742,6 +3827,23 @@ export const MODELS = {
 			contextWindow: 128000,
 			maxTokens: 4000,
 		} satisfies Model<"openai-completions">,
+		"cohere/command-r-plus-08-2024": {
+			id: "cohere/command-r-plus-08-2024",
+			name: "Cohere: Command R+ (08-2024)",
+			api: "openai-completions",
+			provider: "openrouter",
+			baseUrl: "https://openrouter.ai/api/v1",
+			reasoning: false,
+			input: ["text"],
+			cost: {
+				input: 2.5,
+				output: 10,
+				cacheRead: 0,
+				cacheWrite: 0,
+			},
+			contextWindow: 128000,
+			maxTokens: 4000,
+		} satisfies Model<"openai-completions">,
 		"sao10k/l3.1-euryale-70b": {
 			id: "sao10k/l3.1-euryale-70b",
 			name: "Sao10K: Llama 3.1 Euryale 70B v2.2",
@@ -3793,23 +3895,6 @@ export const MODELS = {
 			contextWindow: 65536,
 			maxTokens: 4096,
 		} satisfies Model<"openai-completions">,
-		"meta-llama/llama-3.1-405b-instruct": {
-			id: "meta-llama/llama-3.1-405b-instruct",
-			name: "Meta: Llama 3.1 405B Instruct",
-			api: "openai-completions",
-			provider: "openrouter",
-			baseUrl: "https://openrouter.ai/api/v1",
-			reasoning: false,
-			input: ["text"],
-			cost: {
-				input: 0.7999999999999999,
-				output: 0.7999999999999999,
-				cacheRead: 0,
-				cacheWrite: 0,
-			},
-			contextWindow: 32768,
-			maxTokens: 16384,
-		} satisfies Model<"openai-completions">,
 		"meta-llama/llama-3.1-8b-instruct": {
 			id: "meta-llama/llama-3.1-8b-instruct",
 			name: "Meta: Llama 3.1 8B Instruct",
@@ -3844,6 +3929,23 @@ export const MODELS = {
 			contextWindow: 131072,
 			maxTokens: 4096,
 		} satisfies Model<"openai-completions">,
+		"meta-llama/llama-3.1-405b-instruct": {
+			id: "meta-llama/llama-3.1-405b-instruct",
+			name: "Meta: Llama 3.1 405B Instruct",
+			api: "openai-completions",
+			provider: "openrouter",
+			baseUrl: "https://openrouter.ai/api/v1",
+			reasoning: false,
+			input: ["text"],
+			cost: {
+				input: 0.7999999999999999,
+				output: 0.7999999999999999,
+				cacheRead: 0,
+				cacheWrite: 0,
+			},
+			contextWindow: 32768,
+			maxTokens: 16384,
+		} satisfies Model<"openai-completions">,
 		"mistralai/mistral-nemo": {
 			id: "mistralai/mistral-nemo",
 			name: "Mistral: Mistral Nemo",
@@ -3963,23 +4065,6 @@ export const MODELS = {
 			contextWindow: 128000,
 			maxTokens: 4096,
 		} satisfies Model<"openai-completions">,
-		"meta-llama/llama-3-8b-instruct": {
-			id: "meta-llama/llama-3-8b-instruct",
-			name: "Meta: Llama 3 8B Instruct",
-			api: "openai-completions",
-			provider: "openrouter",
-			baseUrl: "https://openrouter.ai/api/v1",
-			reasoning: false,
-			input: ["text"],
-			cost: {
-				input: 0.03,
-				output: 0.06,
-				cacheRead: 0,
-				cacheWrite: 0,
-			},
-			contextWindow: 8192,
-			maxTokens: 16384,
-		} satisfies Model<"openai-completions">,
 		"meta-llama/llama-3-70b-instruct": {
 			id: "meta-llama/llama-3-70b-instruct",
 			name: "Meta: Llama 3 70B Instruct",
@@ -3997,6 +4082,23 @@ export const MODELS = {
 			contextWindow: 8192,
 			maxTokens: 16384,
 		} satisfies Model<"openai-completions">,
+		"meta-llama/llama-3-8b-instruct": {
+			id: "meta-llama/llama-3-8b-instruct",
+			name: "Meta: Llama 3 8B Instruct",
+			api: "openai-completions",
+			provider: "openrouter",
+			baseUrl: "https://openrouter.ai/api/v1",
+			reasoning: false,
+			input: ["text"],
+			cost: {
+				input: 0.03,
+				output: 0.06,
+				cacheRead: 0,
+				cacheWrite: 0,
+			},
+			contextWindow: 8192,
+			maxTokens: 16384,
+		} satisfies Model<"openai-completions">,
 		"mistralai/mixtral-8x22b-instruct": {
 			id: "mistralai/mixtral-8x22b-instruct",
 			name: "Mistral: Mixtral 8x22B Instruct",
@@ -4031,23 +4133,6 @@ export const MODELS = {
 			contextWindow: 128000,
 			maxTokens: 4096,
 		} satisfies Model<"openai-completions">,
-		"mistralai/mistral-small": {
-			id: "mistralai/mistral-small",
-			name: "Mistral Small",
-			api: "openai-completions",
-			provider: "openrouter",
-			baseUrl: "https://openrouter.ai/api/v1",
-			reasoning: false,
-			input: ["text"],
-			cost: {
-				input: 0.19999999999999998,
-				output: 0.6,
-				cacheRead: 0,
-				cacheWrite: 0,
-			},
-			contextWindow: 32768,
-			maxTokens: 4096,
-		} satisfies Model<"openai-completions">,
 		"mistralai/mistral-tiny": {
 			id: "mistralai/mistral-tiny",
 			name: "Mistral Tiny",
@@ -4065,6 +4150,23 @@ export const MODELS = {
 			contextWindow: 32768,
 			maxTokens: 4096,
 		} satisfies Model<"openai-completions">,
+		"mistralai/mistral-small": {
+			id: "mistralai/mistral-small",
+			name: "Mistral Small",
+			api: "openai-completions",
+			provider: "openrouter",
+			baseUrl: "https://openrouter.ai/api/v1",
+			reasoning: false,
+			input: ["text"],
+			cost: {
+				input: 0.19999999999999998,
+				output: 0.6,
+				cacheRead: 0,
+				cacheWrite: 0,
+			},
+			contextWindow: 32768,
+			maxTokens: 4096,
+		} satisfies Model<"openai-completions">,
 		"mistralai/mixtral-8x7b-instruct": {
 			id: "mistralai/mixtral-8x7b-instruct",
 			name: "Mistral: Mixtral 8x7B Instruct",

packages/ai/src/providers/anthropic.ts

@@ -54,6 +54,7 @@ export const streamAnthropic: StreamFunction<"anthropic-messages"> = (
 				cost: { input: 0, output: 0, cacheRead: 0, cacheWrite: 0, total: 0 },
 			},
 			stopReason: "stop",
+			timestamp: Date.now(),
 		};
 
 		try {

packages/ai/src/providers/google.ts

@@ -59,6 +59,7 @@ export const streamGoogle: StreamFunction<"google-generative-ai"> = (
 				cost: { input: 0, output: 0, cacheRead: 0, cacheWrite: 0, total: 0 },
 			},
 			stopReason: "stop",
+			timestamp: Date.now(),
 		};
 
 		try {

packages/ai/src/providers/openai-completions.ts

@@ -53,6 +53,7 @@ export const streamOpenAICompletions: StreamFunction<"openai-completions"> = (
 				cost: { input: 0, output: 0, cacheRead: 0, cacheWrite: 0, total: 0 },
 			},
 			stopReason: "stop",
+			timestamp: Date.now(),
 		};
 
 		try {

packages/ai/src/providers/openai-responses.ts

@@ -62,6 +62,7 @@ export const streamOpenAIResponses: StreamFunction<"openai-responses"> = (
 				cost: { input: 0, output: 0, cacheRead: 0, cacheWrite: 0, total: 0 },
 			},
 			stopReason: "stop",
+			timestamp: Date.now(),
 		};
 
 		try {

packages/ai/src/types.ts

@@ -95,6 +95,7 @@ export type StopReason = "stop" | "length" | "toolUse" | "error" | "aborted";
 export interface UserMessage {
 	role: "user";
 	content: string | (TextContent | ImageContent)[];
+	timestamp: number; // Unix timestamp in milliseconds
 }
 
 export interface AssistantMessage {
@@ -106,6 +107,7 @@ export interface AssistantMessage {
 	usage: Usage;
 	stopReason: StopReason;
 	errorMessage?: string;
+	timestamp: number; // Unix timestamp in milliseconds
 }
 
 export interface ToolResultMessage<TDetails = any> {
@@ -115,6 +117,7 @@ export interface ToolResultMessage<TDetails = any> {
 	output: string;
 	details?: TDetails;
 	isError: boolean;
+	timestamp: number; // Unix timestamp in milliseconds
 }
 
 export type Message = UserMessage | AssistantMessage | ToolResultMessage;

packages/ai/test/abort.test.ts

@@ -9,6 +9,7 @@ async function testAbortSignal<TApi extends Api>(llm: Model<TApi>, options: Opti
 			{
 				role: "user",
 				content: "What is 15 + 27? Think step by step. Then list 50 first names.",
+				timestamp: Date.now(),
 			},
 		],
 	};
@@ -29,7 +30,11 @@ async function testAbortSignal<TApi extends Api>(llm: Model<TApi>, options: Opti
 	expect(msg.content.length).toBeGreaterThan(0);
 
 	context.messages.push(msg);
-	context.messages.push({ role: "user", content: "Please continue, but only generate 5 names." });
+	context.messages.push({
+		role: "user",
+		content: "Please continue, but only generate 5 names.",
+		timestamp: Date.now(),
+	});
 
 	const followUp = await complete(llm, context, options);
 	expect(followUp.stopReason).toBe("stop");
@@ -42,7 +47,7 @@ async function testImmediateAbort<TApi extends Api>(llm: Model<TApi>, options: O
 	controller.abort();
 
 	const context: Context = {
-		messages: [{ role: "user", content: "Hello" }],
+		messages: [{ role: "user", content: "Hello", timestamp: Date.now() }],
 	};
 
 	const response = await complete(llm, context, { ...options, signal: controller.signal });

packages/ai/test/agent.test.ts

@@ -27,6 +27,7 @@ async function calculateTest<TApi extends Api>(model: Model<TApi>, options: Opti
 1. Calculate 3485 * 4234 and 88823 * 3482 in parallel
 2. Calculate the sum of the two results using the calculator tool
 3. Output ONLY the final sum as a single integer number, nothing else.`,
+		timestamp: Date.now(),
 	};
 
 	// Calculate expected results (using integers)
@@ -176,6 +177,7 @@ async function abortTest<TApi extends Api>(model: Model<TApi>, options: OptionsF
 	const userPrompt: UserMessage = {
 		role: "user",
 		content: "Calculate 100 * 200, then 300 * 400, then 500 * 600, then sum all three results.",
+		timestamp: Date.now(),
 	};
 
 	// Create abort controller

packages/ai/test/empty.test.ts

@@ -8,6 +8,7 @@ async function testEmptyMessage<TApi extends Api>(llm: Model<TApi>, options: Opt
 	const emptyMessage: UserMessage = {
 		role: "user",
 		content: [],
+		timestamp: Date.now(),
 	};
 
 	const context: Context = {
@@ -34,6 +35,7 @@ async function testEmptyStringMessage<TApi extends Api>(llm: Model<TApi>, option
 			{
 				role: "user",
 				content: "",
+				timestamp: Date.now(),
 			},
 		],
 	};
@@ -58,6 +60,7 @@ async function testWhitespaceOnlyMessage<TApi extends Api>(llm: Model<TApi>, opt
 			{
 				role: "user",
 				content: "   \n\t  ",
+				timestamp: Date.now(),
 			},
 		],
 	};
@@ -92,6 +95,7 @@ async function testEmptyAssistantMessage<TApi extends Api>(llm: Model<TApi>, opt
 			cost: { input: 0, output: 0, cacheRead: 0, cacheWrite: 0, total: 0 },
 		},
 		stopReason: "stop",
+		timestamp: Date.now(),
 	};
 
 	const context: Context = {
@@ -99,11 +103,13 @@ async function testEmptyAssistantMessage<TApi extends Api>(llm: Model<TApi>, opt
 			{
 				role: "user",
 				content: "Hello, how are you?",
+				timestamp: Date.now(),
 			},
 			emptyAssistant,
 			{
 				role: "user",
 				content: "Please respond this time.",
+				timestamp: Date.now(),
 			},
 		],
 	};

packages/ai/test/handoff.test.ts

@@ -49,6 +49,7 @@ const providerContexts = {
 				cost: { input: 0, output: 0, cacheRead: 0, cacheWrite: 0, total: 0 },
 			},
 			stopReason: "toolUse",
+			timestamp: Date.now(),
 		} satisfies AssistantMessage,
 		toolResult: {
 			role: "toolResult" as const,
@@ -56,6 +57,7 @@ const providerContexts = {
 			toolName: "get_weather",
 			output: "Weather in Tokyo: 18°C, partly cloudy",
 			isError: false,
+			timestamp: Date.now(),
 		} satisfies ToolResultMessage,
 		facts: {
 			calculation: 391,
@@ -98,6 +100,7 @@ const providerContexts = {
 				cost: { input: 0, output: 0, cacheRead: 0, cacheWrite: 0, total: 0 },
 			},
 			stopReason: "toolUse",
+			timestamp: Date.now(),
 		} satisfies AssistantMessage,
 		toolResult: {
 			role: "toolResult" as const,
@@ -105,6 +108,7 @@ const providerContexts = {
 			toolName: "get_weather",
 			output: "Weather in Berlin: 22°C, sunny",
 			isError: false,
+			timestamp: Date.now(),
 		} satisfies ToolResultMessage,
 		facts: {
 			calculation: 456,
@@ -146,6 +150,7 @@ const providerContexts = {
 				cost: { input: 0, output: 0, cacheRead: 0, cacheWrite: 0, total: 0 },
 			},
 			stopReason: "toolUse",
+			timestamp: Date.now(),
 		} satisfies AssistantMessage,
 		toolResult: {
 			role: "toolResult" as const,
@@ -153,6 +158,7 @@ const providerContexts = {
 			toolName: "get_weather",
 			output: "Weather in London: 15°C, rainy",
 			isError: false,
+			timestamp: Date.now(),
 		} satisfies ToolResultMessage,
 		facts: {
 			calculation: 525,
@@ -196,6 +202,7 @@ const providerContexts = {
 				cost: { input: 0, output: 0, cacheRead: 0, cacheWrite: 0, total: 0 },
 			},
 			stopReason: "toolUse",
+			timestamp: Date.now(),
 		} satisfies AssistantMessage,
 		toolResult: {
 			role: "toolResult" as const,
@@ -203,6 +210,7 @@ const providerContexts = {
 			toolName: "get_weather",
 			output: "Weather in Sydney: 25°C, clear",
 			isError: false,
+			timestamp: Date.now(),
 		} satisfies ToolResultMessage,
 		facts: {
 			calculation: 486,
@@ -239,6 +247,7 @@ const providerContexts = {
 			},
 			stopReason: "error",
 			errorMessage: "Request was aborted",
+			timestamp: Date.now(),
 		} satisfies AssistantMessage,
 		toolResult: null,
 		facts: {
@@ -263,6 +272,7 @@ async function testProviderHandoff<TApi extends Api>(
 		{
 			role: "user",
 			content: "Please do some calculations, tell me about capitals, and check the weather.",
+			timestamp: Date.now(),
 		},
 		sourceContext.message,
 	];
@@ -281,6 +291,7 @@ async function testProviderHandoff<TApi extends Api>(
                  3) What was the temperature?
                  4) What capital city was mentioned?
                  Please include the specific numbers and names.`,
+		timestamp: Date.now(),
 	});
 
 	const context: Context = {

packages/ai/test/stream.test.ts

@@ -32,7 +32,7 @@ const calculatorTool: Tool<typeof calculatorSchema> = {
 async function basicTextGeneration<TApi extends Api>(model: Model<TApi>, options?: OptionsForApi<TApi>) {
 	const context: Context = {
 		systemPrompt: "You are a helpful assistant. Be concise.",
-		messages: [{ role: "user", content: "Reply with exactly: 'Hello test successful'" }],
+		messages: [{ role: "user", content: "Reply with exactly: 'Hello test successful'", timestamp: Date.now() }],
 	};
 	const response = await complete(model, context, options);
 
@@ -44,7 +44,7 @@ async function basicTextGeneration<TApi extends Api>(model: Model<TApi>, options
 	expect(response.content.map((b) => (b.type === "text" ? b.text : "")).join("")).toContain("Hello test successful");
 
 	context.messages.push(response);
-	context.messages.push({ role: "user", content: "Now say 'Goodbye test successful'" });
+	context.messages.push({ role: "user", content: "Now say 'Goodbye test successful'", timestamp: Date.now() });
 
 	const secondResponse = await complete(model, context, options);
 
@@ -65,6 +65,7 @@ async function handleToolCall<TApi extends Api>(model: Model<TApi>, options?: Op
 			{
 				role: "user",
 				content: "Calculate 15 + 27 using the calculator tool.",
+				timestamp: Date.now(),
 			},
 		],
 		tools: [calculatorTool],
@@ -141,7 +142,7 @@ async function handleStreaming<TApi extends Api>(model: Model<TApi>, options?: O
 	let textCompleted = false;
 
 	const context: Context = {
-		messages: [{ role: "user", content: "Count from 1 to 3" }],
+		messages: [{ role: "user", content: "Count from 1 to 3", timestamp: Date.now() }],
 	};
 
 	const s = stream(model, context, options);
@@ -174,6 +175,7 @@ async function handleThinking<TApi extends Api>(model: Model<TApi>, options?: Op
 			{
 				role: "user",
 				content: `Think long and hard about ${(Math.random() * 255) | 0} + 27. Think step by step. Then output the result.`,
+				timestamp: Date.now(),
 			},
 		],
 	};
@@ -228,6 +230,7 @@ async function handleImage<TApi extends Api>(model: Model<TApi>, options?: Optio
 					},
 					imageContent,
 				],
+				timestamp: Date.now(),
 			},
 		],
 	};
@@ -251,6 +254,7 @@ async function multiTurn<TApi extends Api>(model: Model<TApi>, options?: Options
 			{
 				role: "user",
 				content: "Think about this briefly, then calculate 42 * 17 and 453 + 434 using the calculator tool.",
+				timestamp: Date.now(),
 			},
 		],
 		tools: [calculatorTool],
@@ -303,6 +307,7 @@ async function multiTurn<TApi extends Api>(model: Model<TApi>, options?: Options
 					toolName: block.name,
 					output: `${result}`,
 					isError: false,
+					timestamp: Date.now(),
 				});
 			}
 		}

packages/ai/test/tool-call-without-result.test.ts

@@ -33,6 +33,7 @@ describe("Tool Call Without Result Tests", () => {
 			context.messages.push({
 				role: "user",
 				content: "Please calculate 25 * 18 using the calculate tool.",
+				timestamp: Date.now(),
 			});
 
 			// Step 3: Get the assistant's response (should contain a tool call)
@@ -54,6 +55,7 @@ describe("Tool Call Without Result Tests", () => {
 			context.messages.push({
 				role: "user",
 				content: "Never mind, just tell me what is 2+2?",
+				timestamp: Date.now(),
 			});
 
 			// Step 5: The fix should filter out the orphaned tool call, and the request should succeed

packages/ai/test/unicode-surrogate.test.ts

@@ -22,6 +22,7 @@ async function testEmojiInToolResults<TApi extends Api>(llm: Model<TApi>, option
 			{
 				role: "user",
 				content: "Use the test tool",
+				timestamp: Date.now(),
 			},
 			{
 				role: "assistant",
@@ -44,6 +45,7 @@ async function testEmojiInToolResults<TApi extends Api>(llm: Model<TApi>, option
 					cost: { input: 0, output: 0, cacheRead: 0, cacheWrite: 0, total: 0 },
 				},
 				stopReason: "toolUse",
+				timestamp: Date.now(),
 			},
 		],
 		tools: [
@@ -72,6 +74,7 @@ async function testEmojiInToolResults<TApi extends Api>(llm: Model<TApi>, option
 - Mathematical symbols: ∑∫∂√
 - Special quotes: "curly" 'quotes'`,
 		isError: false,
+		timestamp: Date.now(),
 	};
 
 	context.messages.push(toolResult);
@@ -80,6 +83,7 @@ async function testEmojiInToolResults<TApi extends Api>(llm: Model<TApi>, option
 	context.messages.push({
 		role: "user",
 		content: "Summarize the tool result briefly.",
+		timestamp: Date.now(),
 	});
 
 	// This should not throw a surrogate pair error
@@ -97,6 +101,7 @@ async function testRealWorldLinkedInData<TApi extends Api>(llm: Model<TApi>, opt
 			{
 				role: "user",
 				content: "Use the linkedin tool to get comments",
+				timestamp: Date.now(),
 			},
 			{
 				role: "assistant",
@@ -119,6 +124,7 @@ async function testRealWorldLinkedInData<TApi extends Api>(llm: Model<TApi>, opt
 					cost: { input: 0, output: 0, cacheRead: 0, cacheWrite: 0, total: 0 },
 				},
 				stopReason: "toolUse",
+				timestamp: Date.now(),
 			},
 		],
 		tools: [
@@ -151,6 +157,7 @@ Unanswered Comments: 2
   ]
 }`,
 		isError: false,
+		timestamp: Date.now(),
 	};
 
 	context.messages.push(toolResult);
@@ -158,6 +165,7 @@ Unanswered Comments: 2
 	context.messages.push({
 		role: "user",
 		content: "How many comments are there?",
+		timestamp: Date.now(),
 	});
 
 	// This should not throw a surrogate pair error
@@ -175,6 +183,7 @@ async function testUnpairedHighSurrogate<TApi extends Api>(llm: Model<TApi>, opt
 			{
 				role: "user",
 				content: "Use the test tool",
+				timestamp: Date.now(),
 			},
 			{
 				role: "assistant",
@@ -197,6 +206,7 @@ async function testUnpairedHighSurrogate<TApi extends Api>(llm: Model<TApi>, opt
 					cost: { input: 0, output: 0, cacheRead: 0, cacheWrite: 0, total: 0 },
 				},
 				stopReason: "toolUse",
+				timestamp: Date.now(),
 			},
 		],
 		tools: [
@@ -218,6 +228,7 @@ async function testUnpairedHighSurrogate<TApi extends Api>(llm: Model<TApi>, opt
 		toolName: "test_tool",
 		output: `Text with unpaired surrogate: ${unpairedSurrogate} <- should be sanitized`,
 		isError: false,
+		timestamp: Date.now(),
 	};
 
 	context.messages.push(toolResult);
@@ -225,6 +236,7 @@ async function testUnpairedHighSurrogate<TApi extends Api>(llm: Model<TApi>, opt
 	context.messages.push({
 		role: "user",
 		content: "What did the tool return?",
+		timestamp: Date.now(),
 	});
 
 	// This should not throw a surrogate pair error

packages/web-ui/src/agent/agent.ts

@@ -162,6 +162,7 @@ export class Agent {
 			role: "user",
 			content,
 			attachments: attachments?.length ? attachments : undefined,
+			timestamp: Date.now(),
 		};
 
 		this.abortController = new AbortController();
@@ -311,6 +312,7 @@ export class Agent {
 					},
 					stopReason: this.abortController?.signal.aborted ? "aborted" : "error",
 					errorMessage: err?.message || String(err),
+					timestamp: Date.now(),
 				};
 				this.appendMessage(msg as AppMessage);
 				this.patch({ error: err?.message || String(err) });

packages/web-ui/src/agent/transports/AppTransport.ts

@@ -48,6 +48,7 @@ function streamSimpleProxy(
 				cacheWrite: 0,
 				cost: { input: 0, output: 0, cacheRead: 0, cacheWrite: 0, total: 0 },
 			},
+			timestamp: Date.now(),
 		};
 
 		let reader: ReadableStreamDefaultReader<Uint8Array> | undefined;

packages/web-ui/src/components/Messages.ts

@@ -229,7 +229,14 @@ export class ToolMessage extends LitElement {
 
 		// Render tool content (renderer handles errors and styling)
 		const result: ToolResultMessageType<any> | undefined = this.aborted
-			? { role: "toolResult", isError: true, output: "", toolCallId: this.toolCall.id, toolName: this.toolCall.name }
+			? {
+					role: "toolResult",
+					isError: true,
+					output: "",
+					toolCallId: this.toolCall.id,
+					toolName: this.toolCall.name,
+					timestamp: Date.now(),
+				}
 			: this.result;
 		const renderResult = renderTool(
 			toolName,

packages/web-ui/src/components/ProviderKeyInput.ts

@@ -63,7 +63,7 @@ export class ProviderKeyInput extends LitElement {
 			}
 
 			const context: Context = {
-				messages: [{ role: "user", content: "Reply with: ok" }],
+				messages: [{ role: "user", content: "Reply with: ok", timestamp: Date.now() }],
 			};
 
 			const result = await complete(model, context, {

packages/web-ui/src/dialogs/SettingsDialog.ts

@@ -208,13 +208,6 @@ export class SettingsDialog extends LitElement {
 									)}
 								</div>
 							</div>
-
-							<!-- Footer -->
-							<div class="pt-4 flex-shrink-0">
-								<p class="text-xs text-muted-foreground text-center">
-									${i18n("Settings are stored locally in your browser")}
-								</p>
-							</div>
 						</div>
 					`,
 				})}

packages/web-ui/src/storage/stores/sessions-store.ts

@@ -1,3 +1,4 @@
+import type { AgentState } from "../../agent/agent.js";
 import { Store } from "../store.js";
 import type { SessionData, SessionMetadata, StoreConfig } from "../types.js";
 
@@ -82,7 +83,12 @@ export class SessionsStore extends Store {
 	}
 
 	// Alias methods for backward compatibility
-	async saveSession(id: string, state: any, metadata: SessionMetadata | undefined, title?: string): Promise<void> {
+	async saveSession(
+		id: string,
+		state: AgentState,
+		metadata: SessionMetadata | undefined,
+		title?: string,
+	): Promise<void> {
 		// If metadata is provided, use it; otherwise create it from state
 		const meta: SessionMetadata = metadata || {
 			id,
@@ -90,7 +96,7 @@ export class SessionsStore extends Store {
 			createdAt: new Date().toISOString(),
 			lastModified: new Date().toISOString(),
 			messageCount: state.messages?.length || 0,
-			usage: state.usage || {
+			usage: {
 				input: 0,
 				output: 0,
 				cacheRead: 0,

packages/web-ui/src/tools/extract-document.ts

@@ -100,7 +100,10 @@ export function createExtractDocumentTool(): AgentTool<typeof extractDocumentSch
 
 				// Extract filename from URL
 				const urlParts = url.split("/");
-				const fileName = urlParts[urlParts.length - 1]?.split("?")[0] || "document";
+				let fileName = urlParts[urlParts.length - 1]?.split("?")[0] || "document";
+				if (url.startsWith("https://arxiv.org/")) {
+					fileName = fileName + ".pdf";
+				}
 
 				// Use loadAttachment to process the document
 				const attachment = await loadAttachment(arrayBuffer, fileName);