LangSmith
LLM application observability — debug, test, evaluate, and monitor AI apps and agents.
About LangSmith
LangSmith by LangChain is a platform for debugging, testing, evaluating, and monitoring LLM applications and AI agents. It provides tracing, prompt management, dataset curation, and automated evaluation.
Key Features
💰 Pricing
Free developer tier. Plus at $39/month. Enterprise custom.
Basic features with usage limits
Full features, higher limits, priority support
Custom deployment, team management, dedicated support
Frequently Asked Questions
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📊 Comparison vs Alternatives
| Feature | ||||
|---|---|---|---|---|
| Pricing | Freemium | Freemium | Freemium | Freemium |
| Rating | ⭐ 4.4 | ⭐ 4.8 | ⭐ 4.8 | ⭐ 4.6 |
| Free Tier | ✅ | ✅ | ✅ | ✅ |
| Popularity | 16% | 100% | 94% | 92% |
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