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Toyon Verify

AI testers for your product

Thousands of simulated users speak, listen, click, and type through your AI product to find failures that scripted evals and manual testing miss.

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Our team comes from

AppleStanfordCitadelY Combinator

User simulation

Static evals score a response. Customers use a product.

AI products tend to break in the long tail: a caller interrupts, switches languages, gives contradictory details, or takes a path the test script never covered.

Toyon sends thousands of simulated users through the product in parallel. They complete normal workflows, branch into unusual ones, and probe likely failure modes based on the product and its industry.

Test the full interaction

Cover conversations, click paths, languages, and edge cases that one-shot model evals cannot see.

Replay every release

Run the same simulated population before a pilot, after a model change, and on every deployment.

Reproduce each failure

See failure rates, transcripts, and exact steps your team can use to verify the fix.

SM-100 Benchmark

3.19x more bugs found with the same model.

On the SM-100 bug-finding benchmark, Toyon running GPT-5.5 found 83 of 100 real bugs. A reference agent with the same GPT-5.5 model found 26. Same model. Toyon is the difference.

Toyon + GPT-5.583/100
Reference agent + GPT-5.526/100