#21421)

Backports #21418 to `release-v6.0`, adding positioned reasoning effort
updates on empty system messages for OpenAI and Azure Responses models.
Includes Azure namespace fallback and type exports, examples,
documentation, and patch changesets.

The implementation uses the v3 provider interface, v6 Responses option
schemas, and `providerOptions.openai.reasoningEffort`. Examples use
`response.messages`. Existing system-message defaults and request-level
warning behavior are preserved. Compaction settings that do not exist in
v6 are omitted. Core normalization coverage uses the existing mock model
without adding a provider dependency to `ai`.

Validation:
- OpenAI Responses suites: 501 tests passed in each of Node and Edge,
including 76 positioned-update cases.
- Azure provider: 72 tests passed in each runtime.
- Core normalization: 2 tests passed in each runtime.
- `pnpm type-check:full` passed, including examples.
- `pnpm check` and `git diff --check` passed.

---------

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: Gregor Martynus <39992+gr2m@users.noreply.github.com>

…s v6 (#21450)

Automated update of the gateway model settings files.

Regenerated from the upstream gateway model list by
[`update-model-settings.yml`](https://github.com/vercel/ai/blob/main/.github/workflows/update-model-settings.yml)
([this run](https://github.com/vercel/ai/actions/runs/36026668330)).
Merging this PR is what surfaces newly-released gateway models as IDE
autocomplete suggestions when users type a model string with
`@ai-sdk/gateway`.

See the workflow file for details on cadence and scope.

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

This PR was opened by the [Changesets
release](https://github.com/changesets/action) GitHub action. When
you're ready to do a release, you can merge this and the packages will
be published to npm automatically. If you're not ready to do a release
yet, that's fine, whenever you add more changesets to release-v6.0, this
PR will be updated.


# Releases
## ai@6.0.291

### Patch Changes

- Updated dependencies [1915a6f]
  - @ai-sdk/gateway@3.0.201
## @ai-sdk/amazon-bedrock@4.0.183

### Patch Changes

- Updated dependencies [0fb3a22]
  - @ai-sdk/openai@3.0.118
## @ai-sdk/angular@2.0.292

### Patch Changes

- ai@6.0.291
## @ai-sdk/azure@3.0.126

### Patch Changes

- 0fb3a22: Export `OpenAIResponsesSystemMessageOptions` for typed
message-level reasoning effort updates in Azure Responses models.
- Updated dependencies [0fb3a22]
  - @ai-sdk/openai@3.0.118
## @ai-sdk/gateway@3.0.201

### Patch Changes

- 1915a6f: Backport: chore(provider/gateway): update gateway model
settings files
## @ai-sdk/langchain@2.0.299

### Patch Changes

- ai@6.0.291
## @ai-sdk/llamaindex@2.0.291

### Patch Changes

- ai@6.0.291
## @ai-sdk/openai@3.0.118

### Patch Changes

- 0fb3a22: The OpenAI Responses provider now accepts
`providerOptions.openai.reasoningEffortUpdate` on empty system messages
and sends each update at its position in the conversation. This lets
applications change reasoning effort during a conversation while
preserving the prompt prefix for caching.
## @ai-sdk/react@3.0.294

### Patch Changes

- ai@6.0.291
## @ai-sdk/rsc@2.0.291

### Patch Changes

- ai@6.0.291
## @ai-sdk/svelte@4.0.291

### Patch Changes

- ai@6.0.291
## @ai-sdk/vue@3.0.291

### Patch Changes

- ai@6.0.291

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

…ited parent defaults (#21465)

## Background

Explicit MCP stdio environment values such as PATH, HOME, TEMP, and
USERPROFILE were replaced by parent-process values, preventing sandboxed
homes, private temp directories, and pinned executable paths.

## Root Cause

getEnvironment copied custom values before unconditionally assigning
inherited defaults from process.env; the original public-API
reproduction confirmed those later assignments reached the child instead
of explicit values.

## Summary

Inherited defaults are now skipped when a matching custom key exists,
including case-insensitive key matching on Windows, while unrelated
defaults remain inherited. Added a patch changeset for @ai-sdk/mcp.

## Testing

Added regression tests for explicit inherited-key overrides and Windows
Path casing while retaining the existing immutability coverage.

## End-to-end Validation

- `replay_original_reproduction`: passed with `no-longer-reproduces`;
the MCP child received every explicit environment value.

## Related Issues

Fixes #21430

Closes #21462

Backport of #21435

Co-authored-by: ai-sdk-factory[bot] <305873210+ai-sdk-factory[bot]@users.noreply.github.com>
Co-authored-by: ai-sdk-factory <308175966+ai-sdk-factory@users.noreply.github.com>
Co-authored-by: ohad6k <190882507+ohad6k@users.noreply.github.com>

… provider option (#21473)

## Background

Backports #20248 to `release-v6.0`, adding
`gateway.tools.browserbaseSearch()` and
`gateway.tools.browserbaseFetch()` for AI SDK v6.

## Summary

- Include the Browserbase tool definitions, input/output schemas,
documentation, generate/stream examples, tests, and patch changeset from
the original PR.
- Use v6's `createProviderToolFactoryWithOutputSchema` and existing Zod
import pattern; update factory assertions to match v6's tool shape.
- Use `result.fullStream` in the streaming examples.

## Validation

- `pnpm --filter '@ai-sdk/gateway...' --filter 'ai...' build`
- `pnpm --filter @ai-sdk/gateway test` — 439 tests passed in Node and
439 in Edge.
- `pnpm type-check:full`
- `pnpm check`
- `git diff --check`

## Manual Verification

Built the v6 `ai` and `@ai-sdk/gateway` packages and exercised their
public tool exports with `generateText` and `streamText`. All eight
cases passed: search plus raw, Markdown, and schema-based JSON fetch in
each mode. Confirmed configuration overrides, output schema validation,
and `validateUIMessages` compatibility.

## 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)

This PR was opened by the [Changesets
release](https://github.com/changesets/action) GitHub action. When
you're ready to do a release, you can merge this and the packages will
be published to npm automatically. If you're not ready to do a release
yet, that's fine, whenever you add more changesets to release-v6.0, this
PR will be updated.


# Releases
## ai@6.0.292

### Patch Changes

- Updated dependencies [2cf7cb4]
- Updated dependencies [af4a3e4]
  - @ai-sdk/gateway@3.0.202
## @ai-sdk/angular@2.0.293

### Patch Changes

- ai@6.0.292
## @ai-sdk/gateway@3.0.202

### Patch Changes

- 2cf7cb4: feat (provider/gateway): add Browserbase Search and Fetch
tool support
- af4a3e4: feat(provider/gateway): accept structured-output in the has
provider option
## @ai-sdk/langchain@2.0.300

### Patch Changes

- ai@6.0.292
## @ai-sdk/llamaindex@2.0.292

### Patch Changes

- ai@6.0.292
## @ai-sdk/mcp@1.0.86

### Patch Changes

- 86fcba3: fix(mcp): preserve explicit stdio transport environment
values
## @ai-sdk/react@3.0.295

### Patch Changes

- ai@6.0.292
## @ai-sdk/rsc@2.0.292

### Patch Changes

- ai@6.0.292
## @ai-sdk/svelte@4.0.292

### Patch Changes

- ai@6.0.292
## @ai-sdk/vue@3.0.292

### Patch Changes

- ai@6.0.292

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>