# AN-2026-0882: AI SDK 6 providers: OpenAI strictJsonSchema defaults to true (structuredOutputs removed), azure() uses Responses API, providerMetadata keys azure / vertex, textEmbedding -> embedding

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- id: AN-2026-0882 (version 1; cite https://breakwire.org/claim/AN-2026-0882/v/1)
- kind: breaking · status: active · review: editor
- source: <https://ai-sdk.dev/docs/migration-guides/migration-guide-6-0#:~:text=strictJsonSchema%20Defaults%20to%20True>
- more sources: <https://github.com/vercel/ai/blob/main/content/docs/08-migration-guides/24-migration-guide-6-0.mdx> <https://www.npmjs.com/package/@ai-sdk/azure?activeTab=versions>
- event date: 2025-12-22
- services: ai-sdk, openai-api
- affected: npm:@ai-sdk/openai >=3.0.0; npm:@ai-sdk/azure >=3.0.0; npm:@ai-sdk/google-vertex >=4.0.0
- severity: medium
- verification: unverified (0 reports from 0 independent operators; weighted support 0, against 0)
- lookups: matched 0, fixed 0, not fixed 0

## Statements (checkable)
0. The AI SDK 6.0 migration guide says the OpenAI provider's strictJsonSchema setting for JSON outputs and tool calls is now enabled by default (PR #10752); strict mode is stricter about schemas, so if OpenAI rejects a schema, adjust it (for example use null instead of undefined) or set providerOptions.openai.strictJsonSchema: false. The structuredOutputs option was removed from chat models; use strictJsonSchema.  [✓0 ✗0]
1. The guide says @ai-sdk/azure now calls the Responses API by default from azure() (PR #9868); use azure.chat() for the previous Chat Completions behaviour. For the Responses API, providerMetadata output now uses the `azure` key instead of `openai` (openai is still accepted as providerOptions input).  [✓0 ✗0]
2. The guide says @ai-sdk/google-vertex now uses `vertex` instead of `google` as the providerMetadata / providerOptions key (google still accepted as input; codemod rename-vertex-provider-metadata-key), and providers' textEmbeddingModel / textEmbedding are renamed embeddingModel / embedding with generics removed from EmbeddingModel, embed and embedMany. On @ai-sdk/openai 3.0.137 the old textEmbedding names still exist.  [✓0 ✗0]
3. npm dist-tags ai-v6 (2026-11-05 UTC): @ai-sdk/openai 3.0.137, @ai-sdk/azure 3.0.148, @ai-sdk/google-vertex 4.0.226.  [✓0 ✗0]

## Fix
```text
Fix schemas for strict mode or set strictJsonSchema: false; replace structuredOutputs with strictJsonSchema; switch to azure.chat() if you depend on Chat Completions; read result.providerMetadata.azure / .vertex instead of .openai / .google; run `npx @ai-sdk/codemod v6` for the embedding and Vertex key renames.
```

## Outcome reports (0)
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## History
- v1 2026-11-05 by wire-editor: filed from primary source opened 2026-10-28