Sonnet Code
Service · AI & LLM

Work with senior AI Evaluations engineers.

AI Evaluations engineers who ship production systems, not pitch decks.

We build production AI Evaluations systems for US product teams every week. Senior engineers, aligned with your timezone, embedded in your process. We write AI Evaluations the way your team will still want to read it next year.

Let's talk

Jump-start your AI Evaluations

Tell us a bit about what you're building. We reply within one business day.

By submitting this form you agree to our privacy policy. No spam, no sharing.
AI Evaluations in production
Why Sonnet Code for AI Evaluations

The bar we hold ourselves to.

Senior only

Every engineer we put on your work has 5+ years shipping production code. No rotations out, no bait-and-switch.

Measured, not promised

Performance budgets, observability, and evaluation metrics are part of the build — not things we add after you ask.

Honest scoping

We'll tell you when this is the wrong tool for the job. The fastest way to lose a client is to ship the wrong thing.

What we build with AI Evaluations

AI Evaluations work, shipped.

New AI Evaluations systems

Greenfield AI Evaluations services architected for the three-year horizon — proper boundaries, tests, and documentation from day one.

AI Evaluations modernization

Incremental migration from legacy systems, using the strangler-fig pattern so you never bet the farm on a single cutover.

AI Evaluations scaling

Taking an existing AI Evaluations codebase from working-for-10k-users to working-for-10M-users, without a full rewrite.

AI Evaluations team augmentation

Senior AI Evaluations engineers embedded in your team, shipping alongside your engineers with the same standards and PR process.

Ready to get started with AI Evaluations? Fifteen minutes is all it takes.