Braintrust

Braintrust provides an observability platform for AI agents. It covers tracing of prompts, responses and tool calls, evaluation of outputs with LLM, code or human scorers, and pattern discovery across production traces. SDKs are offered for Python, TypeScript, Go, Ruby and C#, and an MCP server connects coding agents to logs and evals.

Customers are engineering and product teams building AI agents; the website cites Notion and Graphite as customer stories. The company offers a Starter tier at $0 per month, a Pro plan at $249 per month, and custom-priced Enterprise plans with on-prem or hosted deployment. Charges also apply for model credits, processed data and scores.

Braintrust was founded in 2022 and is headquartered in San Francisco, California. Its careers page lists 28 open roles, mainly in engineering and go-to-market, with locations in San Francisco, New York City, Seattle, Chicago, Austin, Denver, Boston, London, Singapore and remote. The website states SOC 2 Type II certification and GDPR compliance.

Product: Agent observability platform with tracing, evals, datasets, the Loop and Patterns AI features, and SDKs for Python, TypeScript, Go, Ruby and C#.