gpt-realtime is OpenAI's new speech-to-speech model for production voice agents, delivering low latency and natural, expressive speech. The Realtime API is now GA, adding key features for developers like remote MCP support, image input, and SIP phone calling.

One agent for everywhere you code—included in ChatGPT Plus, Pro, Business, Edu, and Enterprise plans.

gpt-oss-safeguard is a new family of open-source safety models (120b & 20b) from OpenAI. They use reasoning to classify content based on a custom, developer-provided policy at inference time, providing an explainable chain-of-thought for each decision.

AGENTS.md is a simple, open format for guiding coding agents, used by over 20k open-source projects. Think of it as a README for agents.

smartest, fastest, and most useful model

The Assistants API is designed to help developers build powerful AI assistants capable of performing a variety of tasks.

SWE-Lancer is an open-source benchmark from OpenAI, featuring 1,400+ real-world software engineering tasks sourced from Upwork. Test your AI's coding and managerial skills.