GPT-5.5 Codex reasoning-token clustering may be leading to degraded performance

1. codex

   1 180 99,191 10.0 Rust

   Lightweight coding agent that runs in your terminal

   

   Already reported two weeks ago and silently “closed as not planned” (the specific reason but be an artifact of GitHub workflow/UX and not actually the intended reason) without a acknowledgement or a response.

   https://github.com/openai/codex/issues/29353

   What even is the point of a public-facing bug tracker “for devs, by devs” when this is how reports get treated? Might as well use Apple’s Feedback Reporter that routes to /dev/null instead.

2. SaaSHub

   www.saashub.com featured

   SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

   

3. claude-code

   2 435 138,002 9.7 Python

   Claude Code is an agentic coding tool that lives in your terminal, understands your codebase, and helps you code faster by executing routine tasks, explaining complex code, and handling git workflows - all through natural language commands.

   

   But this is model behavior and just a public issue tracker which claude code has just without code? I don’t see how it’s any different than https://github.com/anthropics/claude-code for these issues.

   I do appreciate that codex is open source generally, but I don’t think it matters for this class of issue as the model is closed still

4. codex-516-hook

   3 1 2 2.1 Python

   Codex CLI hooks that warn when gpt-5.5 truncates its reasoning at exactly 516 tokens (openai/codex#30364)

   

   turn end, and via a message injected into the model's context on your next message.

   See https://github.com/bentoner/codex-516-hook

5. codex-reasoning-token-check

   4 1 0 2.1 Python

   Check local Codex session logs for reasoning_output_tokens clustering

   

6. clankerbend

   5 1 2 3.8 JavaScript

   

   Yup! MIT licensed, do whatever you want, you can also just use it directly with nodejs installed through `npx clankerbend` [0].

   Warning: I use this daily myself for work, but beyond me arguing with it to get the CDP architecture, this was completely vibe-coded. I mostly use vim mode (jump to line, jump to prev/next user message) and the account switcher.

   [0] https://github.com/onewillai/clankerbend

7. codex-reasoning-bug-516-token

   6 1 4 6.3 Python

   

   So, I have done a bit of research on this with the writeup+skills+scripts on my personal git: https://github.com/NickalasLight/codex-reasoning-bug-512-tok...

   I think it is very interesting that:

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