Braintrust

Enterprise AI product platform with eval-first approach

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LLM Observability & Monitoring freemium Free Tier growing

Our Take

Braintrust leads with evaluations — if your main pain point is systematically testing prompt changes and measuring quality, it's one of the best options. The AI proxy is a nice touch for unified logging. Less community-driven than Langfuse, and the pricing can scale up quickly for high-volume production workloads.

Pros

  • + Best-in-class evaluation framework
  • + AI proxy for unified logging
  • + Strong TypeScript support
  • + Clean, modern UI

Cons

  • - Closed source
  • - No self-hosting (hybrid deployment for Enterprise only)
  • - Pricing less transparent at scale
  • - Smaller ecosystem than LangSmith

Details

Pricing Model
freemium
Starting Price
$0
Self-Hosted
No
Cloud Hosted
Yes
Founded
2022

Best For

  • • LLM evaluation and scoring
  • • Prompt experimentation
  • • AI proxy with logging
  • • Enterprise observability

Integrations

OpenAI Anthropic LangChain OpenTelemetry Vercel AI SDK Any LLM

Articles featuring Braintrust

Best Of Best LLM Observability Tools in 2026
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