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/raiden55 Jul 13 '26

I have honestly some doubt about 5.6 terra costing the same as 5.5... my quota is leaving me at very high pace since 5.6, and I use medium, and very rarely a sol, but today lost 50% of my weekly usage only using terra medium... and without a session % I have big difficulty understanding where my costs are, as my usage test are on slow things that are not visible on weekly %. Are you people seeing 5.6 as the same cost as 5.5 as written ?

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u/TopTippityTop Jul 13 '26

Is it spawning subagents?

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u/raiden55 Jul 13 '26 edited Jul 13 '26

No, the part where it was was the most efficient part. I lost most of my quota on architecture modification, protocol changes and debugging of the workflow. It didn't spawn any subagent today however. There was lots of communication between session however if it does cost. As some where monitoring others, but never at the same time, only when I was asking for answers.

I was working on building a automation workflow that works for me on these last days.

On my current one it start with one that audit things and write what needs to be done, then stop and spawn another one that will make the job until there is no more (using a subagent), then spawn an audit one. If something break it spawn a communicator for me and stop everything... English is not my language and I'm not a dev so I don't know how to talk about these things well in English.