# What changed in @langchain/mistralai

> 10 changes in @langchain/mistralai 0.3 to 1 from its official release notes, upgrade guides and advisories: 1 security, 4 new APIs and options. Each one cited. Sources checked 2026-10-19. HTML: https://unstale.sh/npm/@langchain/mistralai/

To see which of these apply to a repository, run `npx @unstale/cli init` in it.

## @langchain/mistralai 1

### New APIs and options

- Adds native event conversion for streamEvents. (1.2.0) — [release notes](https://github.com/langchain-ai/langchainjs/releases/tag/%40langchain/mistralai%401.2.0)
- Adds standard schema support for structured output with Mistral AI. (1.0.7) — [release notes](https://github.com/langchain-ai/langchainjs/releases/tag/%40langchain/mistralai%401.0.7)
- Package versions are stamped into runnable trace metadata at construction time, making version information available in LangSmith traces. (1.0.6) — [release notes](https://github.com/langchain-ai/langchainjs/releases/tag/%40langchain/mistralai%401.0.6)
- Adds the useFim option to toggle between FIM and chat APIs. (1.0.2) — [release notes](https://github.com/langchain-ai/langchainjs/releases/tag/%40langchain/mistralai%401.0.2)

### Fixes and other changes

- Chat completions now populate response_metadata.model, which was previously missing. (1.1.0) — [release notes](https://github.com/langchain-ai/langchainjs/releases/tag/%40langchain/mistralai%401.1.0)
- Chat model invoke and stream operations now properly check and propagate abort signals, enabling cancellation and allowing fallback chains to proceed when a runnable is aborted. (1.0.4) — [release notes](https://github.com/langchain-ai/langchainjs/releases/tag/%40langchain/mistralai%401.0.4)
- Fixed streaming issues for @langchain/mistralai. (1.0.3) — [release notes](https://github.com/langchain-ai/langchainjs/releases/tag/%40langchain/mistralai%401.0.3)
- Fixed type compatibility issues for @langchain/mistralai. (1.0.3) — [release notes](https://github.com/langchain-ai/langchainjs/releases/tag/%40langchain/mistralai%401.0.3)
- Fixed compatibility with moduleResolution set to "node". (1.0.1) — [release notes](https://github.com/langchain-ai/langchainjs/releases/tag/%40langchain/mistralai%401.0.1)

## @langchain/mistralai 0.3

### Security

- Fixes CVE 2025 12735. (0.3.58) — [release notes](https://github.com/langchain-ai/langchainjs/releases/tag/0.3.58)