ZKsync’s Airbender hits real-time proving on one GPU, and Vitalik Buterin weighs in

Ethereum users and developers see a new benchmark in ZKsync’s Airbender Prime claim, because the system is described as running real-time proving on a single GPU and handling 99% of proofs in under 10 seconds over 7,200 mainnet blocks. That makes the proving performance itself the thing now visible to the ecosystem, rather than only the broader idea of faster ZK systems.

In practice, the event shifts attention from proving speed alone to what comes next for Ethereum infrastructure, since Vitalik Buterin said the speed race is over and the focus should move to security. The earlier framing that linked the single-GPU result to Ethereum scalability and security verification also suggests the setup being discussed is not just about raw throughput, but about verification work in the network.

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The move was larger before the first headline than after. That is an observation, not an explanation: the market also moves on things nobody publishes.