| Description |
| Summary |
LangChain’s commercial platform for agent/LLM evaluation, tracing, prompt management, monitoring, annotation and deployment workflows.
|
|
|
|
| Description |
LangSmith supports tracing, online/offline evaluations, prompt hub/playground, annotation queues, monitoring/alerting, agent deployment and agent-engineering workflows. It is part of LangChain’s broader agent engineering platform rather than a standalone company.
|
|
|
|
| Positioning |
LLM evaluation and observability platform for agent engineering
|
|
|
|
| Key facts |
| HQ location |
San Francisco, CA, USA
|
|
|
|
| Founded |
2023
|
|
|
|
| Funding stage |
Series B
|
|
|
|
| Company type |
Private
|
|
|
|
| Pricing model |
subscription, usage based
|
|
|
|
| Last updated |
Jun 21, 2026
|
|
|
|
| Financials |
| Revenue estimate |
Unknown / not publicly disclosed
|
|
|
|
| Valuation estimate |
See LangChain
|
|
|
|
| Investments |
See LangChain; LangChain announced $125M Series B at $1.25B valuation in Oct 2025
|
|
|
|
| Relationships |
| Target customers |
AI engineers, LLM product teams and enterprises building reliable agents
|
|
|
|
| Key competitors |
Humanloop, Galileo, Langfuse, Braintrust, Arize AI, Vellum
|
|
|
|
| Known customers |
Replit, Clay, Harvey, Vanta, Cloudflare, Rippling, Cisco, Workday
|
|
|
|
| Segments & Industries |
| Segments |
AI Workflows, AI Agents, AI Developer Tools, Knowledge & RAG, LLM Deployment, AI Quality & Observability, AI Governance & Risk, Analytics & BI
|
|
|
|
