Braintrust

Braintrust builds a platform that helps teams iterate, evaluate and ship AI applications. Its central premise is that evaluation should be part of mainstream engineering workflows rather than an afterthought: the Braintrust platform lets teams run evals alongside their development process, review results together in real time, and turn production data into better AI with each release. The company works in LLM evaluation, evals tooling, real-time data pipelines and AI/ML developer tooling.

The engineering agenda is deliberately hard-edged. Among the problems the team tackles are real-time data pipelines and the design of intuitive interfaces for LLM evaluation - work that combines data infrastructure with user interface design. The stated aim is reliability of AI through a shared understanding of what works and what does not.

Braintrust is a small team of builders. Engineers ship features daily and product managers prototype directly in the UI, with results reviewed collectively in real time. The company describes a culture that values velocity without sacrificing quality, and that emphasises shipping, community and developer love.