[m3h]

Indeed, it looks like my work has suffered from the clustering issue as well:

  reasoning_output_tokens    count    percent
  ━━━━━━━━━━━━━━━━━━━━━━━━━  ━━━━━━━  ━━━━━━━━━
                         0      873    28.5948
  ─────────────────────────  ───────  ─────────
                         8       64     2.0963
  ─────────────────────────  ───────  ─────────
                         9       60     1.9653
  ─────────────────────────  ───────  ─────────
                        11       54     1.7688
  ─────────────────────────  ───────  ─────────
                       516       48     1.5722
  ─────────────────────────  ───────  ─────────
                        12       45     1.4740
  ─────────────────────────  ───────  ─────────
                        10       43     1.4085
  ─────────────────────────  ───────  ─────────
                        17       40     1.3102
  ─────────────────────────  ───────  ─────────
                        13       38     1.2447
  ─────────────────────────  ───────  ─────────
                        14       36     1.1792

Created a script for this: https://github.com/thehappybug/codex-reasoning-token-check

[m3h]

When I reviewed the conversations affected by this issue, they did not always align with my feeling of "degraded output".

Some were definitely below par, and I recall having to iterate on the generated code more than I wanted to. However, it is only true for a very small number of conversations.

So we're looking at a small set of affected conversations, and even within that small set, only a few will have degraded output, likely because the model can compensate for the reasoning defect over the long conversation.

[nsingh2]

I think it might affect real work if part of it requires a lot of thinking, i.e. something similar in nature to a puzzle.

There seems to be something wrong with the "commentary" channel related intermediate updates, maybe the model gets confused about what's an intermediate update vs what's the final answer? [1]

[1] https://github.com/openai/codex/issues/30364#issuecomment-48...