Reasoning tokens

Hold

Techniques

Internal tokens used by a model during step-by-step reasoning.

Why it's here

Placed in Hold: 1 article(s) of evidence from 1 source(s), led by research-stage coverage, with 0 in the last 30 days. Confidence 24%. Low accumulated evidence, so it defaults conservatively pending more signal.

Evidence (1)

5Hacker News·7/4/2026research
GPT-5.5 Codex reasoning token clustering may hurt performance
A GitHub issue reports that GPT-5.5 Codex may be clustering its reasoning tokens in a way that degrades model performance. The discussion on Hacker News suggests this is an observed behavior in the Codex system rather than a confirmed fix or release. The item is currently framed as a potential quality regression affecting model output.