# What changed in langchain-litellm

> 12 changes in langchain-litellm 0.11 from its official release notes, upgrade guides and advisories: 5 breaking. Each one cited. Sources checked 2026-10-31. HTML: https://unstale.sh/pypi/langchain-litellm/

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

## langchain-litellm 0.11

### Breaking changes

- The dependency constraints explain a litellm 1.106.2 minimum and exclude 1.107.0, affecting which versions can be installed. (0.11.2) — [release notes](https://github.com/langchain-ai/langchain-litellm/releases/tag/langchain-litellm%3D%3D0.11.2)
- Declare the Python 3.14 floors for pydantic and typing-extensions, affecting dependency resolution for Python 3.14 users. (0.11.1) — [release notes](https://github.com/langchain-ai/langchain-litellm/releases/tag/langchain-litellm%3D%3D0.11.1)
- Setting api_base or base_url now raises ValueError; configure the endpoint on the Router deployment instead. (0.11.0) — [release notes](https://github.com/langchain-ai/langchain-litellm/releases/tag/langchain-litellm%3D%3D0.11.0)
- Streamed replies place response-level provider_specific_fields in response_metadata, matching invoke; read message.response_metadata["provider_specific_fields"] on both paths. (0.11.0) — [release notes](https://github.com/langchain-ai/langchain-litellm/releases/tag/langchain-litellm%3D%3D0.11.0)
- On ChatLiteLLMRouter, use_responses_api is a check rather than a setting that selects the API. (0.11.0) — [release notes](https://github.com/langchain-ai/langchain-litellm/releases/tag/langchain-litellm%3D%3D0.11.0)

### Behavior and default changes

- Endpoint URL handling is standardized. (0.11.0) — [release notes](https://github.com/langchain-ai/langchain-litellm/releases/tag/langchain-litellm%3D%3D0.11.0)
- Responses API reasoning items are carried across turns, allowing developers to preserve them in multi-turn conversations. (0.11.0) — [release notes](https://github.com/langchain-ai/langchain-litellm/releases/tag/langchain-litellm%3D%3D0.11.0)
- Replies surface url_citation annotations. (0.11.0) — [release notes](https://github.com/langchain-ai/langchain-litellm/releases/tag/langchain-litellm%3D%3D0.11.0)

### Fixes and other changes

- Replay thinking across router fallbacks. (0.11.1) — [release notes](https://github.com/langchain-ai/langchain-litellm/releases/tag/langchain-litellm%3D%3D0.11.1)
- Keep replaying thinking blocks stored before the first-party key. (0.11.1) — [release notes](https://github.com/langchain-ai/langchain-litellm/releases/tag/langchain-litellm%3D%3D0.11.1)
- Null page dimensions are read as absent. (0.11.0) — [release notes](https://github.com/langchain-ai/langchain-litellm/releases/tag/langchain-litellm%3D%3D0.11.0)
- A Router stream reports its real cost after a fallback. (0.11.0) — [release notes](https://github.com/langchain-ai/langchain-litellm/releases/tag/langchain-litellm%3D%3D0.11.0)