Braintrust
Partial infoEval-first platform for iterating on LLM quality.
Braintrust is a managed platform centered on evaluations, with logging, datasets, a prompt playground, and CI integration to catch quality regressions. It targets teams treating evals as a core workflow.
License
Proprietary
Deployment
Managed, Hybrid
Pricing
Free tier; usage-based and enterprise plans.
SDKs / languages
Python, TypeScript
Strengths
- Strong, ergonomic eval workflow
- Playground + datasets + CI
- Good for regression testing
Limitations
- Proprietary platform
- Overkill if you only need basic tracing
Also compared in
Alternatives
Arize Phoenix
Open-source LLM tracing and evaluation, OpenTelemetry-native.
Datadog LLM Observability
LLM tracing and monitoring inside the Datadog platform.
Helicone
Open-source LLM logging and monitoring via a proxy.
Langfuse
Open-source LLM observability, evals, and prompt management.
LangSmith
Tracing, evals, and prompt management from the LangChain team.
Opik
Open-source LLM evaluation and tracing from Comet.
Facts verified 19 July 2026. Neutral summary, not an endorsement; verify current details with the vendor.