OPENAI_API_BASE to SynapsAI and set the API key. See Migrate from OpenAI for environment variable setup.
Chat models (recommended)
Legacy OpenAI LLM wrapper
Older LangChain versions uselangchain_openai.OpenAI for completions-style models:
Use SynapsAI Cloud as an OpenAI-compatible backend in LangChain
OPENAI_API_BASE to SynapsAI and set the API key. See Migrate from OpenAI for environment variable setup.
langchain_openai.OpenAI for completions-style models: