The OpenAI API exposes models like GPT-4o for chat completions, text-embedding models for semantic search, and function calling for tool-augmented agents. Responses can be streamed, structured as JSON, or constrained to predefined schemas.
Codeaxes integrates OpenAI when products need natural language interfaces, document summarization, or semantic search without training custom models from scratch. API-based access keeps inference infrastructure managed while LangChain orchestrates multi-step agent workflows on top.