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Enterprise LLM observability, evaluation, debugging, and prompt testing platform.
Technical Overview & Architecture
LangSmith is an LLMOps platform created by LangChain that gives developers full visibility into complex LLM chains and autonomous agents. It delivers hierarchical execution tracing, automated dataset evaluation, prompt playgrounds, regression testing, and live production telemetry.
Pricing Breakdown
Transparent tiers and feature allotments for engineering teams.
Developer / Free
zsh
- 5,000 traces/month
- 1 seat
- Basic evaluations
- Prompt Playground
Most Popular
Plus Plan
Contact Sales
- 25,000 traces/mo included
- zsh.0005 per additional trace
- Prompt Hub
- Automated dataset regression testing
Enterprise
Custom
- Self-hosted VPC/Kubernetes
- Custom retention
- SOC2/HIPAA compliance
- Advanced RBAC
Compare LangSmith Against Alternatives
See how LangSmith stacks up against competitor tools across speed, APIs, and pricing.