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Cajal

ActiveAI-native

Scaling formal verification to accelerate scientific discovery

caj.alAI readiness report

What it does

Cajal (YC W26) is massively scaling formal verification to accelerate scientific discovery. We deploy superhuman AI mathematicians to high-impact applied domains, starting with quantum computing and finance. We do this with Lean - a framework that allows us to formally verify any mathematical statement, grounding AI in truth and validating the tools discovered by our systems.

Its site says now · captured 2026-08-23

Cajal | Provably correct code

Cajal builds Tau, a prover that verifies your compiled binary with mathematical certainty. Make your mission-critical software provably correct, down to the machine level.

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