Braintrust vs Galileo

Braintrust is an AI observability and evaluation platform that enables teams to monitor production AI applications, evaluate output quality, and iterate on prompts and models systematically. Key differentiators include integrated tracing, evals, and monitoring in one system; Brainstore database optimized for AI traces with superior query speed; Loop AI agent for generating prompts and scorers; and flexible integrations via SDKs, OpenTelemetry, and AI Proxy. Typical buyers are engineering and product teams at tech companies building AI agents or LLM apps, such as Notion, Replit, and Coursera. In February 2026, it raised $80M Series B at $800M valuation, signaling strong investor confidence in AI observability infrastructure. Enterprise features support compliance with SOC 2 Type II, GDPR, and HIPAA.

Galileo is an AI observability and evaluation engineering platform that helps enterprise teams evaluate, monitor, and protect generative AI applications and agents at scale. Its Agent Reliability platform enables teams to build ground-truth datasets, auto-tune evaluation metrics from live feedback, distill LLM-as-a-Judge evaluators into compact Luna models for production guardrails, and run the full eval engineering lifecycle from offline testing to production monitoring. The platform is trusted by teams at HP, Comcast, and Twilio, and is deployable as SaaS, VPC, or on-premises.