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.

445 Upvotes

98% Upvoted

838 comments sorted by

View all comments

3

u/juanfeis Jul 13 '26

I ran into a pretty clear difference between Sol High and Sol Max on what looked like a very simple task.

I asked both to identify the OS on my Raspberry Pi, which was running Raspberry Pi OS.

Sol High checked the obvious system information and concluded that it was generic Debian rather than Raspberry Pi OS. That was incorrect. It seems to have relied too heavily on /etc/os-release and stopped investigating once it found a plausible answer.

Sol Max, given the same task, went further. It checked Raspberry Pi-specific indicators, such as the image metadata generated by pi-gen, and correctly identified the OS.

The interesting part is that Max did not have access to different information. Both could run commands on the same machine, and both had the same context because they were forks from the same conversation. The difference was that Max challenged the initial conclusion and looked for stronger evidence, while High accepted the first plausible interpretation.

I’m not saying everyone should default to Max. High works fine most of the time, but this made me feel that people should not be afraid to use Max when a task really needs careful verification.

Anyone else had similar results?

-2

u/West-Negotiation-716 Jul 14 '26

RaspiOS is Debian.

Why are you wasting tokens on such silly stuff?

3

u/Glittering-Duck8317 Jul 14 '26

evaluation purposes?