{
  "id": 18483,
  "url": "https://simonwillison.net/2026/Aug/11/stealing-reasoning-traces",
  "title": "Stealing Reasoning Traces from Proprietary LLM APIs",
  "summary": "Stealing Reasoning Traces from Proprietary LLM APIs A vanity domain name ( stolen-thoughts.com ) for a neat paper : Anthropic, OpenAI, and Google return encrypted chain-of-thought blocks to clients that can be replayed across sessions, users, and models. We take a trace produced by a frontier model, replay it into a weaker sibling, jailbreak the weaker model, and recover the stronger model’s hidden reasoning in plaintext You can see an example of these encrypted blocks by running: curl https://a",
  "authors": null,
  "category": "org",
  "topics": "safety-alignment",
  "orgs": "openai,anthropic,google",
  "regions": null,
  "published_at": "2026-08-11T22:40:45.000Z",
  "fetched_at": "2026-08-12T05:10:43.828Z",
  "source_slug": "x-simon-willisons-weblog",
  "source_name": "Simon Willisons Weblog",
  "source_homepage": "https://simonwillison.net",
  "ethics_ai_record_url": "https://ethics.ai/record/18483",
  "original_url": "https://simonwillison.net/2026/Aug/11/stealing-reasoning-traces",
  "evidence_status": "source-only",
  "attribution": "via ethics.ai"
}