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Braintrust

Braintrust

Observability, Prompts & EvalsLayer 4Freemium
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What is Braintrust?

Braintrust is an end-to-end AI product platform trusted by companies like Notion, Stripe, and Vercel. It combines logging, evaluation datasets, prompt management, and an AI proxy with automatic caching and fallback. Braintrust's evaluation framework helps teams measure quality across prompt iterations with customizable scoring functions.

Key Features

  • Real-time LLM logging and tracing
  • Built-in evaluation framework
  • Prompt playground
  • Dataset management
  • Human review workflows

Common Use Cases

AI teams who need a unified platform for logging, evaluating, and improving LLM applications

  • Iterating on prompts with real production data
  • Running evaluations across model versions
  • Building golden datasets from production traffic
  • Human-in-the-loop review of LLM outputs
  • Cost and latency optimization

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