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Anthropic open-sources FlashProve to cryptographically verify which AI model generated a response

This story is from 2026-11-03. It is preserved in the archive; the latest stories are on the live feed.

Anthropic released FlashProve, an open-source (Apache 2.0) research prototype that uses zero-knowledge cryptography to prove an AI reply came from the claimed model without exposing weights. Coverage notes limits including ~72x overhead and a 1,024-token cap.

Read the full story at Mint AI ↗

Timeline · 12 reports

  1. 2026-11-05 14:26 · The Next Web
    Anthropic open-sources FlashProve to prove which AI model wrote an answer
  2. 2026-11-05 09:33 · DEV Community — AI
    Stop Guessing Which AI Model to Use: Test One Codex Task through RelayRouter
  3. 2026-11-05 00:34 · DEV Community — Machine Learning
    Anthropic's FlashProve: what 72x overhead and a 1,024-token cap mean for proving which model answered you
  4. 2026-11-04 22:51 · The New Stack AI
    Anthropic found a way to prove which AI model answered you — but there’s a costly catch
  5. 2026-11-04 15:58 · r/artificial
    Anthropic’s FlashProve could prove an AI provider used the model you paid for without exposing its weights
  6. 2026-11-04 15:23 · The Decoder
    Anthropic's new prototype proves which model wrote an AI response without exposing its weights
  7. 2026-11-04 06:37 · DEV Community — AI
    FlashProve: Proving Which AI Model Actually Answered
  8. 2026-11-04 06:25 · Mint AI
    What is FlashProve? Anthropic’s open-source tool to prove which AI model generated a response
  9. 2026-11-04 03:38 · DEV Community — AI
    Anthropic FlashProve proves which model answered with a zkSNARK proof
  10. 2026-11-03 23:01 · DEV Community — AI
    Anthropic's FlashProve Proves Which Model Answered You, at 70-95x vLLM's GPU Time
  11. 2026-11-03 22:10 · r/machinelearningnews
    Anthropic open-sources FlashProve, zkSNARK proofs for 400B Llama 4 Maverick inference (110 tok/s on 1 H100)
  12. 2026-11-03 19:54 · AlphaSignal
    Anthropic's FlashProve Cryptographically Proves Which AI Model Answered You

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