Researchers extract hidden reasoning traces from Claude, GPT, and Gemini

The extraction method works on all major API-accessed frontier models, per researchers at University of Tübingen, Max Planck, and Snyk. Kimi K3's reasoning closely matched Claude Opus 4.8 and GPT 5.6 Sol, suggesting possible distillation — though not causally proven. The flaw also allowed recovery of passwords and API keys, since fixed.
Featured · Alexander Panfilov
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