diff --git a/packages/ai/scripts/generate-models.ts b/packages/ai/scripts/generate-models.ts
index dde305c2..76866e60 100644
--- a/packages/ai/scripts/generate-models.ts
+++ b/packages/ai/scripts/generate-models.ts
@@ -51,6 +51,26 @@ function isCopilotModelDeprecated(model: Record<string, unknown>): boolean {
 	return false;
 }
 
+/**
+ * Models to exclude from Copilot - dated snapshots, legacy models, and unsupported versions.
+ * Users should use the main model ID (e.g., "gpt-4o") instead of dated versions.
+ */
+const COPILOT_EXCLUDED_MODELS = new Set([
+	// Dated GPT-4o snapshots - use "gpt-4o" instead
+	"gpt-4o-2024-05-13",
+	"gpt-4o-2024-08-06",
+	"gpt-4o-2024-11-20",
+	// Legacy GPT-3.5 and GPT-4 models
+	"gpt-3.5-turbo",
+	"gpt-3.5-turbo-0613",
+	"gpt-4",
+	"gpt-4-0613",
+]);
+
+function isCopilotModelExcluded(modelId: string): boolean {
+	return COPILOT_EXCLUDED_MODELS.has(modelId);
+}
+
 function getCopilotApi(modelId: string, supportedEndpoints: string[] | null): Api {
 	if (supportedEndpoints?.includes("/responses")) return "openai-responses";
 	if (supportedEndpoints?.includes("/chat/completions")) return "openai-completions";
@@ -103,6 +123,7 @@ async function fetchCopilotModels(githubToken: string): Promise<Model<any>[]> {
 			const id = typeof model.id === "string" ? model.id : null;
 			if (!id) continue;
 			if (isCopilotModelDeprecated(model)) continue;
+			if (isCopilotModelExcluded(id)) continue;
 
 			const caps = model.capabilities;
 			if (!caps || typeof caps !== "object") continue;
diff --git a/packages/ai/src/models.generated.ts b/packages/ai/src/models.generated.ts
index b95b3475..33940363 100644
--- a/packages/ai/src/models.generated.ts
+++ b/packages/ai/src/models.generated.ts
@@ -6373,58 +6373,6 @@ export const MODELS = {
 			contextWindow: 128000,
 			maxTokens: 4096,
 		} satisfies Model<"openai-completions">,
-		"gpt-4o-2024-11-20": {
-			id: "gpt-4o-2024-11-20",
-			name: "gpt-4o-2024-11-20",
-			api: "openai-completions",
-			provider: "github-copilot",
-			baseUrl: "https://api.githubcopilot.com",
-			headers: {
-				"User-Agent": "GitHubCopilotChat/0.35.0",
-				"Editor-Version": "vscode/1.105.1",
-				"Editor-Plugin-Version": "copilot-chat/0.35.0",
-				"Copilot-Integration-Id": "copilot-developer-cli",
-				"Openai-Intent": "conversation-edits",
-				"X-Initiator": "agent",
-			},
-			compat: { supportsStore: false, supportsDeveloperRole: false, supportsReasoningEffort: false },
-			reasoning: false,
-			input: ["text", "image"],
-			cost: {
-				input: 0,
-				output: 0,
-				cacheRead: 0,
-				cacheWrite: 0,
-			},
-			contextWindow: 128000,
-			maxTokens: 16384,
-		} satisfies Model<"openai-completions">,
-		"gpt-4o-2024-08-06": {
-			id: "gpt-4o-2024-08-06",
-			name: "gpt-4o-2024-08-06",
-			api: "openai-completions",
-			provider: "github-copilot",
-			baseUrl: "https://api.githubcopilot.com",
-			headers: {
-				"User-Agent": "GitHubCopilotChat/0.35.0",
-				"Editor-Version": "vscode/1.105.1",
-				"Editor-Plugin-Version": "copilot-chat/0.35.0",
-				"Copilot-Integration-Id": "copilot-developer-cli",
-				"Openai-Intent": "conversation-edits",
-				"X-Initiator": "agent",
-			},
-			compat: { supportsStore: false, supportsDeveloperRole: false, supportsReasoningEffort: false },
-			reasoning: false,
-			input: ["text"],
-			cost: {
-				input: 0,
-				output: 0,
-				cacheRead: 0,
-				cacheWrite: 0,
-			},
-			contextWindow: 128000,
-			maxTokens: 16384,
-		} satisfies Model<"openai-completions">,
 		"grok-code-fast-1": {
 			id: "grok-code-fast-1",
 			name: "grok-code-fast-1",
@@ -6681,110 +6629,6 @@ export const MODELS = {
 			contextWindow: 264000,
 			maxTokens: 64000,
 		} satisfies Model<"openai-responses">,
-		"gpt-3.5-turbo-0613": {
-			id: "gpt-3.5-turbo-0613",
-			name: "gpt-3.5-turbo-0613",
-			api: "openai-completions",
-			provider: "github-copilot",
-			baseUrl: "https://api.githubcopilot.com",
-			headers: {
-				"User-Agent": "GitHubCopilotChat/0.35.0",
-				"Editor-Version": "vscode/1.105.1",
-				"Editor-Plugin-Version": "copilot-chat/0.35.0",
-				"Copilot-Integration-Id": "copilot-developer-cli",
-				"Openai-Intent": "conversation-edits",
-				"X-Initiator": "agent",
-			},
-			compat: { supportsStore: false, supportsDeveloperRole: false, supportsReasoningEffort: false },
-			reasoning: false,
-			input: ["text"],
-			cost: {
-				input: 0,
-				output: 0,
-				cacheRead: 0,
-				cacheWrite: 0,
-			},
-			contextWindow: 16384,
-			maxTokens: 4096,
-		} satisfies Model<"openai-completions">,
-		"gpt-4": {
-			id: "gpt-4",
-			name: "gpt-4",
-			api: "openai-completions",
-			provider: "github-copilot",
-			baseUrl: "https://api.githubcopilot.com",
-			headers: {
-				"User-Agent": "GitHubCopilotChat/0.35.0",
-				"Editor-Version": "vscode/1.105.1",
-				"Editor-Plugin-Version": "copilot-chat/0.35.0",
-				"Copilot-Integration-Id": "copilot-developer-cli",
-				"Openai-Intent": "conversation-edits",
-				"X-Initiator": "agent",
-			},
-			compat: { supportsStore: false, supportsDeveloperRole: false, supportsReasoningEffort: false },
-			reasoning: false,
-			input: ["text"],
-			cost: {
-				input: 0,
-				output: 0,
-				cacheRead: 0,
-				cacheWrite: 0,
-			},
-			contextWindow: 32768,
-			maxTokens: 4096,
-		} satisfies Model<"openai-completions">,
-		"gpt-4-0613": {
-			id: "gpt-4-0613",
-			name: "gpt-4-0613",
-			api: "openai-completions",
-			provider: "github-copilot",
-			baseUrl: "https://api.githubcopilot.com",
-			headers: {
-				"User-Agent": "GitHubCopilotChat/0.35.0",
-				"Editor-Version": "vscode/1.105.1",
-				"Editor-Plugin-Version": "copilot-chat/0.35.0",
-				"Copilot-Integration-Id": "copilot-developer-cli",
-				"Openai-Intent": "conversation-edits",
-				"X-Initiator": "agent",
-			},
-			compat: { supportsStore: false, supportsDeveloperRole: false, supportsReasoningEffort: false },
-			reasoning: false,
-			input: ["text"],
-			cost: {
-				input: 0,
-				output: 0,
-				cacheRead: 0,
-				cacheWrite: 0,
-			},
-			contextWindow: 32768,
-			maxTokens: 4096,
-		} satisfies Model<"openai-completions">,
-		"gpt-4o-2024-05-13": {
-			id: "gpt-4o-2024-05-13",
-			name: "gpt-4o-2024-05-13",
-			api: "openai-completions",
-			provider: "github-copilot",
-			baseUrl: "https://api.githubcopilot.com",
-			headers: {
-				"User-Agent": "GitHubCopilotChat/0.35.0",
-				"Editor-Version": "vscode/1.105.1",
-				"Editor-Plugin-Version": "copilot-chat/0.35.0",
-				"Copilot-Integration-Id": "copilot-developer-cli",
-				"Openai-Intent": "conversation-edits",
-				"X-Initiator": "agent",
-			},
-			compat: { supportsStore: false, supportsDeveloperRole: false, supportsReasoningEffort: false },
-			reasoning: false,
-			input: ["text", "image"],
-			cost: {
-				input: 0,
-				output: 0,
-				cacheRead: 0,
-				cacheWrite: 0,
-			},
-			contextWindow: 128000,
-			maxTokens: 4096,
-		} satisfies Model<"openai-completions">,
 		"gpt-4-o-preview": {
 			id: "gpt-4-o-preview",
 			name: "gpt-4-o-preview",
@@ -6837,32 +6681,6 @@ export const MODELS = {
 			contextWindow: 128000,
 			maxTokens: 16384,
 		} satisfies Model<"openai-completions">,
-		"gpt-3.5-turbo": {
-			id: "gpt-3.5-turbo",
-			name: "gpt-3.5-turbo",
-			api: "openai-completions",
-			provider: "github-copilot",
-			baseUrl: "https://api.githubcopilot.com",
-			headers: {
-				"User-Agent": "GitHubCopilotChat/0.35.0",
-				"Editor-Version": "vscode/1.105.1",
-				"Editor-Plugin-Version": "copilot-chat/0.35.0",
-				"Copilot-Integration-Id": "copilot-developer-cli",
-				"Openai-Intent": "conversation-edits",
-				"X-Initiator": "agent",
-			},
-			compat: { supportsStore: false, supportsDeveloperRole: false, supportsReasoningEffort: false },
-			reasoning: false,
-			input: ["text"],
-			cost: {
-				input: 0,
-				output: 0,
-				cacheRead: 0,
-				cacheWrite: 0,
-			},
-			contextWindow: 16384,
-			maxTokens: 4096,
-		} satisfies Model<"openai-completions">,
 		"gpt-4o-mini": {
 			id: "gpt-4o-mini",
 			name: "gpt-4o-mini",