AI-Proof Verification

The LLM-Proof Captcha of the Future

Bots got smarter. Your captcha should too. Lacha stops AI agents cold while keeping the experience seamless for real humans.

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LLM Resistant

Purpose-built challenges that multimodal AI models cannot solve, even with tool use.

Human Friendly

97%+ human solve rate. No more fire hydrants, crosswalks, or blurry text.

Adaptive Difficulty

Threat-level scoring adjusts challenge complexity in real time, zero friction for trusted users.

Performance

Numbers Don't Lie

Same human pass rate. Dramatically lower AI solve rate. That's the Lacha difference.

Human Solve Rate

Higher is better

LLM Solve Rate

Lower is better

Ready to outsmart the bots?

Integrate Lacha in minutes. One script tag. Full protection.

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