Sutro is an AI platform that helps organizations build, optimize, and run reliable AI Functions—models designed to make consistent decisions according to human expert judgment. Users upload an unlabeled dataset, define a task, and provide feedback on challenging examples. Sutro uses that guidance to align available models, select a suitable option for quality and cost, and improve performance as teams add data or evaluate newly released models.

The platform supports a range of workflows, including classification, scoring, judging agent traces, extracting personally identifiable information, resolving business identities, routing support tickets, and image analysis. Functions can process large datasets in batches or handle inputs continuously as they arrive, with API endpoints for running tasks. Sutro also offers tools to compare model quality and inference costs, measure results, and guard against regressions.

Designed for applied AI teams, data and ML engineers, and AI training-data teams, Sutro supports open-source and proprietary models, along with images, PDFs, and web search.