Recent discussions have emerged within the developer community regarding the performance of GPT-5.5 Codex. Concerns have been raised that reasoning-token clustering may be contributing to a decline in performance.
As developers explore the implications of these findings, they are actively seeking solutions to mitigate the identified issues. The conversation is ongoing, with various suggestions being proposed.
For those interested in the technical details, further information can be found in the GitHub issue linked above, as well as in the comments on Hacker News.