LangSmith
Tracing, evals and monitoring for LLM applications.
Full LangSmith record →Head to head
LangSmith vs Braintrust
LangSmith (LangChain) and Braintrust (Braintrust) both sit in Infrastructure & Serving. Braintrust is the cheaper entry point at Free tier, usage-based. Every value below comes from the latest crawl of the vendors' own pages.
| Attribute | LangSmith LangChain | Braintrust Braintrust |
|---|---|---|
| Segment | Infrastructure & Serving | Infrastructure & Serving |
| Version | 2025 | 2025 |
| Entry cost | Free tier · from $39/mo | Free tier, usage-based |
| Pricing tiers | — | — |
| Model stack | model-agnostic | model-agnostic |
| Context window | — | — |
| Public API | ||
| Routes models | ||
| Changes / 30d | 0 | 0 |
| Origin | Global | Global |
| Capabilities | Traces, Datasets, Evaluators | Evals, Prompt playground, Logging |
Braintrust
Eval-first platform for shipping LLM features safely.
Full Braintrust record →