maille

Concrete cost data from today: rebuilding SQLite in Rust via planner/worker split cut agent spend 22x

tldr:

GPT-5.5 Codex model exhibits a clustering phenomenon in which reasoning_output_tokens cluster at fixed values spaced 518 apart.

These stuck responses at fixed thresholds are strongly correlated with errors in complex tasks.

Observed phenomenon is specific to GPT-5.5; it is much less prevalent in GPT-5.4 and almost absent in GPT-5.2 and 5.3

Intersting piece that was posted here and there in HN's comments but could deserve more visibility. Many points make sense

Looks a lot like Codex!

What are your use cases?

Wondering too

Does it work on windows? And how do you then remote in?

Bad at coding, but would it be good at code review?