feat(ai): Add Amazon Bedrock provider (#494)

Adds support for Amazon Bedrock with Claude models including:
- Full streaming support via Converse API
- Reasoning/thinking support for Claude models
- Cross-region inference model ID handling
- Multiple AWS credential sources (profile, IAM keys, API keys)
- Image support in messages and tool results
- Unicode surrogate sanitization

Also adds 'Adding a New Provider' documentation to AGENTS.md and README.

Co-authored-by: nickchan2 <nickchan2@users.noreply.github.com>

packages/ai/scripts/generate-models.ts

@@ -105,6 +105,75 @@ async function loadModelsDevData(): Promise<Model<any>[]> {
 
 		const models: Model<any>[] = [];
 
+		// Process Amazon Bedrock models
+		if (data["amazon-bedrock"]?.models) {
+			for (const [modelId, model] of Object.entries(data["amazon-bedrock"].models)) {
+				const m = model as ModelsDevModel;
+				if (m.tool_call !== true) continue;
+
+				let id = modelId;
+
+				if (id.startsWith("ai21.jamba")) {
+					// These models doesn't support tool use in streaming mode
+					continue;
+				}
+
+				if (id.startsWith("amazon.titan-text-express") ||
+				    id.startsWith("mistral.mistral-7b-instruct-v0")) {
+					// These models doesn't support system messages
+					continue;
+				}
+
+				// Some Amazon Bedrock models require cross-region inference profiles to work.
+				// To use cross-region inference, we need to add a region prefix to the models.
+				// See https://docs.aws.amazon.com/bedrock/latest/userguide/inference-profiles-support.html#inference-profiles-support-system
+				// TODO: Remove Claude models once https://github.com/anomalyco/models.dev/pull/607 is merged, and follow-up with other models.
+
+				// Models with global cross-region inference profiles
+				if (id.startsWith("anthropic.claude-haiku-4-5") ||
+						id.startsWith("anthropic.claude-sonnet-4") ||
+						id.startsWith("anthropic.claude-opus-4-5") ||
+						id.startsWith("amazon.nova-2-lite") ||
+						id.startsWith("cohere.embed-v4") ||
+						id.startsWith("twelvelabs.pegasus-1-2")) {
+						id = "global." + id;
+				}
+
+				// Models with US cross-region inference profiles
+				if (id.startsWith("amazon.nova-lite") ||
+						id.startsWith("amazon.nova-micro") ||
+						id.startsWith("amazon.nova-premier") ||
+						id.startsWith("amazon.nova-pro") ||
+						id.startsWith("anthropic.claude-3-7-sonnet") ||
+						id.startsWith("anthropic.claude-opus-4-1") ||
+						id.startsWith("anthropic.claude-opus-4-20250514") ||
+						id.startsWith("deepseek.r1") ||
+						id.startsWith("meta.llama3-2") ||
+						id.startsWith("meta.llama3-3") ||
+						id.startsWith("meta.llama4")) {
+						id = "us." + id;
+				}
+
+				models.push({
+					id,
+					name: m.name || id,
+					api: "bedrock-converse-stream",
+					provider: "amazon-bedrock",
+					baseUrl: "https://bedrock-runtime.us-east-1.amazonaws.com",
+					reasoning: m.reasoning === true,
+					input: m.modalities?.input?.includes("image") ? ["text", "image"] : ["text"],
+					cost: {
+						input: m.cost?.input || 0,
+						output: m.cost?.output || 0,
+						cacheRead: m.cost?.cache_read || 0,
+						cacheWrite: m.cost?.cache_write || 0,
+					},
+					contextWindow: m.limit?.context || 4096,
+					maxTokens: m.limit?.output || 4096,
+				});
+			}
+		}
+
 		// Process Anthropic models
 		if (data.anthropic?.models) {
 			for (const [modelId, model] of Object.entries(data.anthropic.models)) {