OpenResponses

An open-source API for structured, high-fidelity LLM outputs using standardized JSON schemas.

OpenResponses streamlines the bridge between raw model inference and production-ready data. By enforcing strict schema validation (OpenAPI 3.1) and providing a unified SDK, it eliminates the common 15% failure rate associated with malformed LLM outputs. Developers use it to automate complex workflows like medical coding or legal document parsing where precision is non-negotiable. The platform supports direct integration with OpenAI, Anthropic, and local Llama 3 instances, ensuring consistent data structures across any model provider.

https://openresponses.com