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feat(provider/anthropic): add support for new Claude Sonnet 4.6 model (#12645)
## Background Anthropic released Claude Sonnet 4.6: https://www.anthropic.com/news/claude-sonnet-4-6 This PR adds the new model string across the SDK so it's recognized with correct capabilities. ## Summary Adds `claude-sonnet-4-6` as a recognized model ID in the `anthropic`, `amazon-bedrock`, and `google-vertex` provider packages. The model is registered with 128k max output tokens and structured output support (same tier as `claude-opus-4-6`). It supports both adaptive and enabled thinking modes. Documentation model tables and capability lists are updated to include the new model. A few relevant examples (`anthropic-reasoning`, `anthropic-context-management`) are updated to use the new model string. ## Manual Verification N/A — model string addition, verified via type check (`pnpm type-check:full`). ## Checklist - [x] Tests have been added / updated (for bug fixes / features) - [x] Documentation has been added / updated (for bug fixes / features) - [x] A _patch_ changeset for relevant packages has been added (for bug fixes / features - run `pnpm changeset` in the project root) - [x] I have reviewed this pull request (self-review) ## Future Work N/A ## Related Issues N/A
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‎.changeset/clean-students-unite.md‎

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---
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'@ai-sdk/amazon-bedrock': patch
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'@ai-sdk/gateway': patch
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'@ai-sdk/google-vertex': patch
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'@ai-sdk/anthropic': patch
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---
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feat(provider/anthropic): add support for new Claude Sonnet 4.6 model

‎content/docs/02-foundations/02-providers-and-models.mdx‎

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| [OpenAI](/providers/ai-sdk-providers/openai) | `gpt-5-codex` | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> |
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| [OpenAI](/providers/ai-sdk-providers/openai) | `gpt-5-chat-latest` | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> |
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| [Anthropic](/providers/ai-sdk-providers/anthropic) | `claude-opus-4-6` | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> |
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| [Anthropic](/providers/ai-sdk-providers/anthropic) | `claude-sonnet-4-6` | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> |
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| [Anthropic](/providers/ai-sdk-providers/anthropic) | `claude-opus-4-5` | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> |
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| [Anthropic](/providers/ai-sdk-providers/anthropic) | `claude-opus-4-1` | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> |
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| [Anthropic](/providers/ai-sdk-providers/anthropic) | `claude-opus-4-0` | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> |

‎content/providers/01-ai-sdk-providers/05-anthropic.mdx‎

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3. Claude processes the results in code and generates the final response
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<Note>
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Programmatic tool calling requires `claude-sonnet-4-5` or `claude-opus-4-5`
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models and uses the `code_execution_20250825` tool.
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Programmatic tool calling requires `claude-sonnet-4-6`, `claude-sonnet-4-5`,
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`claude-opus-4-6`, or `claude-opus-4-5` models and uses the
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`code_execution_20250825` tool.
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</Note>
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#### Container Persistence
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| Model | Image Input | Object Generation | Tool Usage | Computer Use | Web Search | Tool Search | Compaction |
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| -------------------------- | ------------------- | ------------------- | ------------------- | ------------------- | ------------------- | ------------------- | ------------------- |
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| `claude-opus-4-6` | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> |
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| `claude-sonnet-4-6` | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> | |
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| `claude-opus-4-5` | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> | |
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| `claude-haiku-4-5` | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> | | |
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| `claude-sonnet-4-5` | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> | |

‎content/providers/01-ai-sdk-providers/index.mdx‎

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| [OpenAI](/providers/ai-sdk-providers/openai) | `gpt-4o` | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> |
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| [OpenAI](/providers/ai-sdk-providers/openai) | `gpt-4o-mini` | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> |
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| [Anthropic](/providers/ai-sdk-providers/anthropic) | `claude-opus-4-6` | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> |
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| [Anthropic](/providers/ai-sdk-providers/anthropic) | `claude-sonnet-4-6` | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> |
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| [Anthropic](/providers/ai-sdk-providers/anthropic) | `claude-opus-4-5` | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> |
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| [Anthropic](/providers/ai-sdk-providers/anthropic) | `claude-sonnet-4-5` | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> |
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| [Anthropic](/providers/ai-sdk-providers/anthropic) | `claude-haiku-4-5` | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> |

‎examples/ai-functions/src/generate-text/anthropic-context-management.ts‎

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run(async () => {
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const result = await generateText({
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model: anthropic('claude-haiku-4-5'),
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model: anthropic('claude-sonnet-4-6'),
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messages: [
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{
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role: 'user',

‎examples/ai-functions/src/generate-text/anthropic-reasoning.ts‎

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run(async () => {
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const result = await generateText({
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model: anthropic('claude-3-7-sonnet-20250219'),
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model: anthropic('claude-sonnet-4-6'),
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prompt: 'How many "r"s are in the word "strawberry"?',
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temperature: 0.5, // should get ignored (warning)
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providerOptions: {

‎examples/ai-functions/src/stream-text/anthropic-context-management.ts‎

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}
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}
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},
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model: anthropic('claude-haiku-4-5'),
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model: anthropic('claude-sonnet-4-6'),
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messages: [
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{ role: 'user', content: 'What is the weather in San Francisco?' },
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{

‎examples/ai-functions/src/stream-text/anthropic-reasoning.ts‎

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run(async () => {
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const result = streamText({
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model: anthropic('claude-3-7-sonnet-20250219'),
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model: anthropic('claude-sonnet-4-6'),
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prompt: 'How many "r"s are in the word "strawberry"?',
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temperature: 0.5, // should get ignored (warning)
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onError: error => {

‎packages/amazon-bedrock/src/anthropic/bedrock-anthropic-options.ts‎

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export type BedrockAnthropicModelId =
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| 'anthropic.claude-opus-4-6-v1'
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| 'anthropic.claude-sonnet-4-6-v1'
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| 'anthropic.claude-opus-4-5-20251101-v1:0'
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| 'anthropic.claude-sonnet-4-5-20250929-v1:0'
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| 'anthropic.claude-opus-4-20250514-v1:0'
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| 'anthropic.claude-3-sonnet-20240229-v1:0'
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| 'anthropic.claude-3-haiku-20240307-v1:0'
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| 'us.anthropic.claude-opus-4-6-v1'
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| 'us.anthropic.claude-sonnet-4-6-v1'
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| 'us.anthropic.claude-opus-4-5-20251101-v1:0'
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| 'us.anthropic.claude-sonnet-4-5-20250929-v1:0'
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| 'us.anthropic.claude-opus-4-20250514-v1:0'

‎packages/anthropic/src/anthropic-messages-language-model.ts‎

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isKnownModel: boolean;
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} {
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if (modelId.includes('claude-opus-4-6')) {
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if (
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modelId.includes('claude-sonnet-4-6') ||
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modelId.includes('claude-opus-4-6')
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) {
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return {
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maxOutputTokens: 128000,
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supportsStructuredOutput: true,

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