Corrected: GPT-6.1 Sol launches for Work, Codex and the API

ChatGPTNew modelConfirmed

Correction: Work and Codex access starts with Pro and expands gradually to other eligible plans. Workspace permissions apply. Eligibility does not guarantee access on your account.

OpenAI releases GPT-6.1 Sol, a model update for coding, document work and tasks across apps.

OpenAI reports better results than GPT-6 Sol in its tests.
Standard API input and output prices are unchanged; reusing cached input costs less.

Who can use it: ChatGPT Work and Codex: rollout starts with Pro, expanding to Plus, Business, Enterprise and Edu; workspace permissions apply. Also available through the OpenAI API. Not yet in Chat.
When: Announced September 29, 2026. Release notes describe a staged rollout, so access may vary by account. The launch article confirms API availability and says Ultrafast is coming later without a confirmed date.

OpenAI GPT-6.1 Sol announcement · OpenAI September 29 release notes Announced 2026-09-29 · date only

Read the official announcement for access details. Availability can depend on your plan, region or workplace settings.

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