Anthropic has open-sourced FlashProve, a zero-knowledge system that lets anyone mathematically prove an AI answer really came from the model it claims to be - no weights required, verified on a home CPU in about 17 seconds.
Key points
- Built on zkSNARKs; tested on Meta's Llama 4 Maverick (400B MoE, 17B active).
- Roughly 110 tokens per second proof speed on one H100; about 18.78 MB per proof; about 17 seconds CPU verification.
- Apache 2.0 license, code on GitHub. Proves the source model, not correctness, and is not yet deployed.
Why it matters
As model APIs multiply, provable model provenance becomes a trust primitive: you can verify which model produced an answer without the provider revealing its weights.
Read the full post with the infographic: https://www.threerouter.com/blog/316
Sources: threerouter AI Daily.
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