Model-release

OpenAI just released GPT-5, its most capable model yet. Here's what it means for developers building agents, tools, and AI-powered workflows — and how you can try it today using Agent Playground.

Explore OpenAI's new open-weight models GPT-OSS-120B and GPT-OSS-20B. Learn how they enable powerful agentic workflows, local inference, and safe open-source AI development.