Braintrust vs LangSmith
A side-by-side look at pricing, capabilities, pros, cons, and our editorial scores.
 Braintrust Evaluation |  LangSmith Evaluation | |
|---|---|---|
| Tagline | Eval, monitor, and improve AI products end-to-end. | LangChain's eval + observability platform. |
| Category | Evaluation | Evaluation |
| Pricing | Freemium· Starter: $0 · Pro: $249 · Enterprise: Custom pricing | Freemium· Developer: $0 · Plus: $39 · Enterprise: Custom pricing |
| Model | Platform (any LLM) | Platform (any LLM) |
| Editorial score | 8.9 / 10 | 8.7 / 10 |
| Use cases | evalsmonitoringprompt management | LLM tracingevalsLangChain integration |
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| Website | www.braintrust.dev | www.langchain.com |
Pick Braintrust if
- ✅ Full eval + observability in one tool
- ✅ Excellent UX
- ✅ Strong dataset/experiment tracking
- ✅ Closed loop dev → prod
Pick LangSmith if
- ✅ Tight LangChain integration
- ✅ Strong tracing UX
- ✅ Mature dataset/eval flows
- ✅ Reasonable per-seat pricing