Anthropic releases FlashProve prototype to cryptographically verify which model produced a response
This story is from 2026-11-04. It is preserved in the archive; the latest stories are on the live feed.
Anthropic published FlashProve, an open-source Apache 2.0 research prototype that uses zkSNARK zero-knowledge proofs to verify a response came from the claimed model without exposing weights. It faces limits including 72x overhead and a 1,024-token cap.
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Timeline · 4 reports
- 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 - 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 - 2026-11-04 15:23 · The Decoder
Anthropic's new prototype proves which model wrote an AI response without exposing its weights - 2026-11-04 03:38 · DEV Community — AI
Anthropic FlashProve proves which model answered with a zkSNARK proof