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EngineeringJun 4, 2026· 6 min read

Evals are the product

JLJamie Lin

The teams winning with AI aren't the ones with the cleverest prompts — they're the ones who can measure quality. Here's how we build eval suites that gate every release.

Most AI projects fail in the same place: nobody can say whether the system is actually good. Demos dazzle, then production quietly disappoints, and the team has no way to tell whether a change made things better or worse.

We treat evals as the first deliverable, not the last. Before we write the agent, we write the test suite — drawn from your real data and graded against the decisions your best people already make.

This flips the dynamic entirely. Every prompt change, model swap, or new tool runs through the suite. Regressions get caught before your customers see them, and 'is this better?' becomes a number instead of an argument.

If you take one thing from working with us: an AI system you can't measure is an AI system you can't trust. Build the ruler first.

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