Braintrust
AI evals and observability platform for LLM products
Braintrust (braintrust.dev) Review
Braintrust is an evaluation and observability platform for AI applications. It provides tools for logging LLM traces, running evaluations and experiments, comparing prompts and models, and managing datasets of test cases, with an AI proxy that caches and logs requests. Native SDKs are offered for Python, TypeScript, Go, Ruby, C#, and other languages, plus an MCP server that connects coding agents to the platform. A free tier is available without a credit card; paid plans start at $249 per month. Replaces Predibase, which was acquired by Rubrik and no longer verifiable as a standalone offering.
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Key Capabilities & Features
- •LLM tracing and prompt debugging
- •Evals, experiments, and dataset management
- •AI proxy with caching and logging
- •SDKs for Python, TypeScript, Go, Ruby, C#
- •MCP server for coding agent integration
- •Free tier without credit card
Pricing, Access & Specs
✓ Strengths & Highlights
- MLOps
✕ Potential Drawbacks
- Plan limits change; confirm current terms on the official pricing page.
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