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Overview
LangSmith is a complete AI agent and LLM observability platform. It offers tracing and real-time monitoring to help developers debug agents, find failures fast, and track critical metrics like costs and latency.
Features
Cost tracking
Online LLM-as-judge and code evals
Tool and agent trajectory monitoring
Webhook and Pagerduty alerts
Message threading for multi-turn chat interactions
Templates for error analysis
Plans & Pricing
DeveloperFree
$0/mo
For solo users, up to 5k base traces/mo.
Team
$39/mo
Per seat/month, unlimited seats, custom trace volume.
Enterprise
Custom
Advanced hosting, security, and support needs.
Last checked: 2026-03-24
What's New with LangSmith
Latest news, updates, and media coverage
2 days ago·90
Andrej Karpathy says AI agents write 80% of his code, speeding development
Mar 16·90
Anduril AI systems land $20B Army deal; IBM, Zhipu release compact models
Mar 16·93
OpenClaw AI Agent Ecosystem Expands with RL, Memory, Governance Tools
Mar 16·80
AI expands into new applications; deepfake detection and misinformation fight grow
Mar 15·95
China boosts OpenClaw AI agent startups with millions in subsidies
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Frequently asked questions about LangSmith
Yes, LangSmith offers a freemium plan. AI Agent & LLM Observability Platform
LangSmith is a complete AI agent and LLM observability platform. It offers tracing and real-time monitoring to help developers debug agents, find failures fast, and track critical metrics like costs a...
Key features of LangSmith include: Cost tracking, Online LLM-as-judge and code evals, Tool and agent trajectory monitoring, Webhook and Pagerduty alerts.
LangSmith is primarily designed for both businesses and individuals. AI Agent & LLM Observability Platform
Popular alternatives to LangSmith include Microsoft Copilot, Cursor, Google AI Studio. Compare their features on Decod.tech to find the best fit.
LangSmith remains relevant in 2026. LangSmith is a complete AI agent and LLM observability platform. It offers tracing and real-time monitoring to help developers debug agents, find fail The pricing model is freemium. Check reviews and comparisons on Decod.tech to decide.
LangSmith offers a freemium plan. You can start for free and upgrade as your needs grow. Visit the official pricing page for details.