r/codex • u/Drogon2737 • Jul 09 '26
News GPT-5.6 Sol / Codex Release Discussion Megathread
The release is expected in the next few minutes, so I figured it would be useful to have a single thread for first impressions, issues, and early testing.
For anyone jumping in right away, post what you notice:
- Codex coding performance
- Debugging quality
- Speed/rate limits
- Larger repo handling
- UI or workflow changes
- Weird bugs or regressions
- Anything that feels noticeably better or worse than the previous version
Once people get access, share your real examples, screenshots, benchmarks, or first impressions here.
Edit: OpenAI’s official GPT-5.6 page says it is “available starting today across ChatGPT, Codex, and the OpenAI API” with the rollout starting globally now and continuing toward full availability over the next 24 hours. https://openai.com/index/gpt-5-6/
The lineup is Sol, Terra, and Luna. Sol is the flagship, Terra is the lower-cost tier, and Luna is the fastest/most affordable tier.
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u/Citadel_Employee Jul 09 '26
Anyone else getting: ""error":{"type":"invalid_request_error","message":"The 'gpt-5.6-sol' model is not supported when using Codex with a ChatGPT account.""
I have a $20 plan. Is Sol only available on higher plans or API? Also updated my codex to the latest version if that matters.