Stealing Reasoning Traces from Proprietary LLM APIs

Everything Fervor AI has published that touches Stealing Reasoning Traces from Proprietary LLM APIs — 1 piece, newest first.

• Encrypted Reasoning Blocks Were Never Private. A Cheaper Sibling Model Reads Them Out Loud.

  Encrypted reasoning blocks are interchangeable across models inside one provider family, so a cheap sibling will transcribe a frontier model's hidden thinking verbatim,…