News · Codex
Tibo: GPT-6.1 becomes available across paid plans and the API
Posted on X by Tibo (@thsottiaux) on 29 September 2026. The headline is our summary; the post itself is quoted below.
Tibo@thsottiaux ·
GPT-6.1 is a good model. And it’s unbelievably efficient. Included in all paid plans and on the API today. pic.twitter.com/XateucqneE
The quote is the post as published on X; the original may include images, links or a thread.
Context
- Codex CLI 0.159.2Released the same day (UTC). Suppressed console windows flashing on Windows when Codex launches background processes and sandboxed commands. (#49385) · Changelog · 49385 [0.159] Backport Windows console suppression…
- Codex CLI 0.159.1Released the same day (UTC). Added GPT-6.1 Sol as the default model in the bundled catalog and Amazon Bedrock Mantle and Runtime catalogs. (#49323, #49342) · Changelog · 49323…
- Codex CLI 0.159.0Released the same day (UTC). Opt-in instant_interrupt lets new input steer Codex during model responses or long-running code-mode calls. (#48135, #48141) · New sessions get a compact welcome screen…
- AI news in September 2026The month in one page: posts, releases, resets and blog posts.
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Also tracked: Codex news · Codex resets · Codex release notes · Blog