GPT-5.5 chain-of-thought leaked via Codex, reveals familiar reasoning pattern
A Reddit user captured GPT-5.5's internal monologue—here's what it showed.
Deep Dive
A Reddit user posted an output from GPT 5.5-medium via codex, showing the model’s internal reasoning about file paths and code formatting while working on a project.
Key Points
- GPT-5.5 (medium) leaked its chain-of-thought reasoning during a Codex debugging session, revealing detailed file-path logic.
- The reasoning pattern closely resembles a 'caveman speech' prompting technique posted on r/LocalLLaMA five months ago.
- The leak demonstrates that even advanced models may use transparent step-by-step reasoning, raising both transparency and predictability questions.
Why It Matters
Shows that even cutting-edge AI reasoning builds on known techniques, challenging claims of radical novelty.