OpenAI is holding its DevDay 2025 event today, Oct. 6, and the company has already teased that it has a host of product launches under its sleeve. While it's geared toward developers, the company also ...

Sam Altman took the stage again for model updates. GPT-5 Pro is now in the API for developers, which Altman said is good for high accuracy and depth of reasoning. He also announced the launch of ...

The SDK is built on the open source Model Context Protocol (MCP), Altman said. That means developers that already use MCP only need to add an HTML resource to enable ChatGPT integration, he added.