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LangSmith is an AI agent and LLM observability platform built by LangChain, the company behind the popular LangChain framework. It solves the problem of understanding and debugging complex AI agent behaviors in production by providing complete visibility into agent execution traces. Core capabilities include tracing, monitoring, and insights. Tracing allows developers to see exactly what their agent is doing step by step, pinpointing issues related to latency, cost, and response quality. Monitoring provides real-time dashboards for tracking performance metrics like token usage, error rates, and cost, with online evaluations and alerts. Insights automatically analyze and cluster traces to detect usage patterns and failure modes. LangSmith is designed for teams building AI agents and LLM applications, from individual developers to large enterprises, and integrates with any LLM framework via SDKs for Python, TypeScript, Go, and Java, as well as OpenTelemetry.
4.7/5
High, consistent, and on-brand
Clean and minimal
Observability and debugging for AI agents and LLM applications.
Works with any LLM framework via SDKs (Python, TypeScript, Go, Java) and OpenTelemetry.
Freemium with paid tiers
Features with the highest value for users are highlighted here.
Agent tracing with step-by-step visibility
Real-time monitoring dashboards
Online LLM-as-judge and code evaluations
SmithDB purpose-built trace database
Unsupervised topic clustering and error analysis
Multi-framework support (OpenAI, Anthropic, LlamaIndex, etc.)
OpenTelemetry integration
Self-hosted and BYOC deployment options
Add the LangSmith SDK to your project using pip, npm, or Go modules.
Wrap your LLM calls and agent logic with tracing decorators or context managers.
Open the LangSmith dashboard to see detailed execution traces with latency and cost breakdowns.
Set up dashboards and alerts to track performance, and use Insights to discover patterns automatically.
AI Engineers
ML Teams
Product Managers
DevOps Engineers
Startups
Enterprise Teams
RAG Developers
Chatbot Builders
Research Labs
Freelance Developers
Free
Pro
Enterprise
Want to add more pricing plans?
Claim this tool to manage plans, pricing, and listing details.
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Side-by-side with top alternatives in this category.
| Tool | Rating | Visits / mo | Global rank | Category rank | Engagement | Bounce | Top market | Starts at | Free tier | Integrations | Action |
|---|---|---|---|---|---|---|---|---|---|---|---|
 LangSmithAI Development Tools | 3.2M | #13,185 | #167 | 5m 59s6.6 pages | US(20%)#4,474 | $0 | 2+ | View | |||
 deci.aiAI Development Tools | 631.0M | #47 | #4 | 6m 32s6.1 pages | US(20%)#70 | $0 | 1 | View | |||
 FinGPTAI Development Tools | 631.0M | #47 | #4 | 6m 32s6.1 pages | US(20%)#70 | $0 | 1 | View | |||
 Skywork-R1VAI Development Tools | 631.0M | #47 | #4 | 6m 32s6.1 pages | US(20%)#70 | $0 | 1 | View | |||
 PocketPal AIAI Development Tools | 1.1B | — | — | 2m2.6 pages | US(15%) | $0 | 1 | View |
Website traffic and keyword analysis.
Monthly visits
3.15M
↓ -6.9% vs prior month
Avg. visit duration
00:05:59
M 4 2026 snapshot
Pages / visit
6.63
M 4 2026 snapshot
Bounce rate
42.16%
Lower is better
All traffic · Worldwide
Weekly estimate · Feb 1, 2026 – Apr 29, 2026
Peak week: 702.97K (Feb 1, 2026)Low week: 630.9K (Apr 1, 2026)WoW: 0.0%Derived from monthly estimates · SimilarWeb-equivalent
0 releases published
No releases yet.
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