OpenAI developers: Ultrafast is available today in the API, Codex, and ChatGPT Worker for GPT-6.1 Sol. This mode offers near-Astra intelligence and runs up to 8 times faster than the standard Sol Standard mode, enabling developers to build at the pac

2026-10-09

OpenAI developers: Ultrafast is available today in the API, Codex, and ChatGPT Worker for GPT-6.1 Sol. This mode offers near-Astra intelligence and runs up to 8 times faster than the standard Sol Standard mode, enabling developers to build at the pace of emerging ideas.