About

A small team that builds and ships its own AI products.

Exchester is a UK production AI practice for teams where accuracy, workflow integration and operational reliability matter. We build the systems, run them in production, and consult from that experience.

How we work

We take on work we would be willing to run ourselves.

Most of what we know about AI in production came from operating our own platform, GATA AI, under commercial load — and from building systems in legal and clinical settings where a wrong answer has consequences. That experience sets how we work: prove the risky part early, measure accuracy honestly, and design for the day the model is wrong.

Engagements are senior and small. The people who scope your project are the people who build it, and we would rather turn work down than staff it thinly.

Research depth

Founder-led by Cinar Baymul, an Oxford DPhil with the judgement to tell a solvable problem from an expensive one.

Operator experience

We run a commercial AI platform of our own, so we have lived with the cost, latency and support reality of what we recommend.

Regulated-domain work

Legal and clinical builds where answers must be grounded, cited and defensible to a professional user.

Cinar Baymul, founder and technical lead at Exchester

Founder & technical lead

Cinar Baymul, DPhil

Cinar combines more than a decade in data science, engineering, product and operational leadership with a DPhil from the University of Oxford. He builds and operates AI products across media, legal and healthcare rather than advising at arm’s length.

That operator perspective sets Exchester’s standard: prove the risky assumption early, measure the system honestly and build something the client’s team can own.

View Cinar on LinkedIn →

What we believe

A demo is not evidence.

Anything can be made to work once. We measure on data you have not seen, and we tell you when the number is bad.

The model is the easy part.

Data, evaluation, interface and operations decide whether an AI product works. That is where the engagement goes.

You should be able to take it back.

Code, documentation and evaluation sets are yours. We build so your engineers can own it without us.

Work with the people who build it.

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