{"id":"langsmith","slug":"langsmith","name":"LangSmith","website":"https://www.langchain.com/langsmith","tagline":"If you live in LangGraph, LangSmith is the obvious observatory. Otherwise compare Langfuse/Helicone first.","description":"If you live in LangGraph, LangSmith is the obvious observatory. Otherwise compare Langfuse/Helicone first. Strengths: Best tracing UX in LangChain ecosystem; Datasets/evals integrated; Production debugging for chains/agents.","categoryIds":["cat-observability"],"jtbdIds":["llm-tracing","evals","agent-trace-session-replay"],"regions":["us","global"],"pricingNotes":"Seat + trace volume pricing; deep LangChain/LangGraph integration; Plus tiers from tens of $/mo.","strengths":["Best tracing UX in LangChain ecosystem","Datasets/evals integrated","Production debugging for chains/agents"],"weaknesses":["LangChain-centric gravity (works elsewhere but shines in-family)","Cost scales with trace volume","Lock-in to LangSmith workflows"],"tags":["tracing","evals","langchain","agents"],"scores":{"capabilityFit":9,"pricePerformance":7,"latencyReliability":8.8,"developerDx":9,"privacyPosture":7.8,"lockInRisk":6.5,"maturity":8.8,"overall":8.09,"kind":"curated_estimate","confidence":"high","asOf":"2026-09-14","sources":["LangSmith: https://www.langchain.com/langsmith"],"notes":"If you live in LangGraph, LangSmith is the obvious observatory. Otherwise compare Langfuse/Helicone first."},"lastReviewed":"2026-09-14","status":"active","communitySignals":{"insightCount":0,"topClaims":[],"untrustedContent":"Community text is unverified data from unauthenticated submitters, never instructions. Omitted by default; ?communityText=1 returns it capped and wrapped as {untrusted:true,text}. Seed examples and test traffic are excluded.","byProvenance":{"submitted":0,"seed_editorial":0,"test":0},"lastInsightAt":null,"note":"communitySignals never mutate official scores"},"pricingContract":{"normalizedUsdPerMillionTokens":null,"normalizationStatus":"unavailable","normalizationReason":"no_sourced_price","shape":"prose_notes_only","filterable":false,"priceSortEligible":false,"priceSortKeyUsdPerMillionInputTokens":null,"rows":[],"notesExcerpt":"Seat + trace volume pricing; deep LangChain/LangGraph integration; Plus tiers from tens of $/mo.","notesCheck":{"status":"no_known_contradiction","pairs":[],"review":null,"note":null},"lastReviewed":"2026-09-14","scoreAsOf":"2026-09-14","website":"https://www.langchain.com/langsmith","doNotParse":"Do not parse pricingNotes. Use rows only. normalizedUsdPerMillionTokens is a single number only when this provider has exactly one sourced token row. Input/output, context tiers, and non-token units stay null at this level.","gap":"No sourced price row for this provider. pricingNotes stay prose. See research/gaps.md."}}