langchain-ai/langchainjs @langchain/openai@1.2.4

on GitHub

Patch Changes

• #9887 1fa865b Thanks @Muhammad-Kamran-Khan! - Fix validation to allow file_url and file_id without filename metadata in Responses API, and prevent sending filename when not allowed.

• #9873 28efb57 Thanks @hntrl! - Add reasoningEffort call option as a convenience shorthand for reasoning.effort

  • Adds reasoningEffort to BaseChatOpenAICallOptions for easier configuration of reasoning models
  • Automatically coalesces reasoningEffort into reasoning.effort when calling reasoning models (o1, o3, etc.)
  • If both reasoningEffort and reasoning.effort are provided, reasoning.effort takes precedence
  • Marked as @deprecated to encourage use of the full reasoning.effort option

• #9876 4e42452 Thanks @sflanker! - fix(openai): pass runManager to responses._generate function in ChatOpenAI

• #9900 a9b5059 Thanks @hntrl! - Improved abort signal handling for chat models:

  • Added ModelAbortError class in @langchain/core/errors that contains partial output when a model invocation is aborted mid-stream
  • invoke() now throws ModelAbortError with accumulated partialOutput when aborted during streaming (when using streaming callback handlers)
  • stream() throws a regular AbortError when aborted (since chunks are already yielded to the caller)
  • All provider implementations now properly check and propagate abort signals in both _generate() and _streamResponseChunks() methods
  • Added standard tests for abort signal behavior

• #9900 a9b5059 Thanks @hntrl! - fix(providers): add proper abort signal handling for invoke and stream operations

  • Added early abort check (signal.throwIfAborted()) at the start of _generate methods to immediately throw when signal is already aborted
  • Added abort signal checks inside streaming loops in _streamResponseChunks to return early when signal is aborted
  • Propagated abort signals to underlying SDK calls where applicable (Google GenAI, Google Common/VertexAI, Cohere)
  • Added standard tests for abort signal behavior in @langchain/standard-tests

  This enables proper cancellation behavior for both invoke and streaming operations, and allows fallback chains to correctly proceed to the next runnable when the previous one is aborted.