## The problem
Issue langchain-ai/langchain#12949 (closed, 34 comments): ### System Info Langchain v0.0.323 Openai v1.0.1 (latest) Python v3.11.6 ### Who can help? @hwchase17 @agola11 ### Information - [ ] The official example notebooks/scripts - [X] My own modified scripts ### Related Components - [X] LLMs/Chat Models - [ ] Embedding Models - [ ] Prompts / Prompt Templates / Prompt Selectors - [ ] Output Parsers - [ ] Document Loaders - [ ] Vector Stores / Retrievers - [ ] Memory - [ ] Agents / Agent Executors - [ ] Tools / Toolkits - [ ] Chains - [ ] Callbacks/Tracing - [ ] Async ### Reproduction ``` from...
## The fix
This error means your langchain version predates the OpenAI v1 client. Upgrade langchain to a release that supports openai>=1.0; one confirmed-good combo from the thread is openai==1.2.0 with langchain==0.0.332 (0.0.333 works too), and several users fixed it with a plain fresh install. Whatever you do, upgrade the two together: mixing a new openai with an old langchain (or vice versa) is what produces this.
## Notes
Thread: https://github.com/langchain-ai/langchain/issues/12949. Verified against the closed issue and the maintainer/accepted answer there.