{"subject":{"id":"langsmith","slug":"langsmith","name":"LangSmith","tagline":"If you live in LangGraph, LangSmith is the obvious observatory. Otherwise compare Langfuse/Helicone first.","website":"https://www.langchain.com/langsmith","status":"active","overall":8.09,"scoreKind":"curated_estimate","confidence":"high","scoreAsOf":"2026-09-14","lastReviewed":"2026-09-14","categoryIds":["cat-observability"],"regions":["us","global"],"pricing":{"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."}},"relatedJtbdSlugs":["llm-tracing","evals","oss-evals","production-guardrail-evals","langgraph-deploy","continuous-eval-ci","agent-trace-session-replay","ml-dataset-versioning"],"alternatives":[{"id":"braintrust","slug":"braintrust","name":"Braintrust","tagline":"Depot pick when evals are the product quality gate. 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See research/gaps.md."},"decideHint":"/api/decide?jtbd=evals","human":"/providers/braintrust","compare":"/compare/langsmith-vs-braintrust"},{"id":"langfuse","slug":"langfuse","name":"Langfuse","tagline":"Depot default observability for most agent teams: open, affordable, good enough to serious.","website":"https://langfuse.com","status":"active","overall":8.66,"scoreKind":"curated_estimate","confidence":"high","scoreAsOf":"2026-09-14","deltaOverallVsSubject":0.57,"roles":["same_jtbd_pick","same_jtbd_runner"],"sharedJtbdSlugs":["llm-tracing","evals","agent-trace-session-replay","ml-dataset-versioning"],"pricing":{"normalizedUsdPerMillionTokens":null,"normalizationStatus":"unavailable","normalizationReason":"no_sourced_price","shape":"prose_notes_only","filterable":false,"priceSortEligible":false,"priceSortKeyUsdPerMillionInputTokens":null,"rows":[],"notesExcerpt":"Open-source + cloud; generous self-host; cloud from ~$29–59/mo tiers; EU-friendly.","notesCheck":{"status":"no_known_contradiction","pairs":[],"review":null,"note":null},"lastReviewed":"2026-09-14","scoreAsOf":"2026-09-14","website":"https://langfuse.com","doNotParse":"Do not parse pricingNotes. 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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."},"decideHint":"/api/decide?jtbd=oss-evals","human":"/providers/promptfoo","compare":"/compare/langsmith-vs-promptfoo"},{"id":"weights-biases","slug":"weights-biases","name":"Weights & Biases","tagline":"Use for training/fine-tune discipline. 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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."},"decideHint":"/api/decide?jtbd=ml-dataset-versioning","human":"/providers/weights-biases","compare":"/compare/langsmith-vs-weights-biases"},{"id":"langgraph-cloud","slug":"langgraph-cloud","name":"LangGraph Platform / LangSmith Deploy","tagline":"Deploy here if your graphs already are LangGraph. 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Natural if already on LangChain/LangGraph.","notesCheck":{"status":"no_known_contradiction","pairs":[],"review":null,"note":null},"lastReviewed":"2026-09-14","scoreAsOf":"2026-09-14","website":"https://www.langchain.com/langgraph","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."},"decideHint":"/api/decide?jtbd=langgraph-deploy","human":"/providers/langgraph-cloud","compare":"/compare/langsmith-vs-langgraph-cloud"},{"id":"galileo","slug":"galileo","name":"Galileo","tagline":"Pick for production hallucination measurement + guardrails. Braintrust/Promptfoo for lighter eval loops.","website":"https://www.galileo.ai","status":"active","overall":7.45,"scoreKind":"curated_estimate","confidence":"high","scoreAsOf":"2026-09-14","deltaOverallVsSubject":-0.64,"roles":["same_jtbd_pick"],"sharedJtbdSlugs":["production-guardrail-evals"],"pricing":{"normalizedUsdPerMillionTokens":null,"normalizationStatus":"unit_mismatch","normalizationReason":"unit_mismatch","shape":"sourced_rows","filterable":false,"priceSortEligible":false,"priceSortKeyUsdPerMillionInputTokens":null,"rows":[{"id":"galileo-free","providerId":"galileo","sku":"Free","unit":"usd_per_month","amountUsd":0,"currency":"USD","sourceUrl":"https://galileo.ai/pricing","asOf":"2026-10-03","normalizationStatus":"unit_mismatch","normalizedUsdPerMillionTokens":null,"normalizationReason":"unit_mismatch_per_month","priceSortEligible":false,"qualifier":"5,000 traces per month."},{"id":"galileo-pro","providerId":"galileo","sku":"Pro","unit":"usd_per_month","amountUsd":100,"currency":"USD","sourceUrl":"https://galileo.ai/pricing","asOf":"2026-10-03","normalizationStatus":"unit_mismatch","normalizedUsdPerMillionTokens":null,"normalizationReason":"unit_mismatch_per_month","priceSortEligible":false,"qualifier":"Card shows $100/month with Billed yearly and Save 33%. Month-to-month amount is not shown and was not reconstructed. Page says pricing scales with traces."}],"notesExcerpt":"As of 2026-09-14 (galileo.ai/pricing live): Free **$0/mo** — 5,000 traces/mo, unlimited users/custom evals. Pro **$100/mo** (annual; scales with traces) — 50,000 traces/mo, standard RBAC, advanced analytics, Slack support. Enterprise contact — unlimited traces, VPC/on-prem, SSO, …","notesCheck":{"status":"no_known_contradiction","pairs":[],"review":null,"note":null},"lastReviewed":"2026-09-14","scoreAsOf":"2026-09-14","website":"https://www.galileo.ai","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":"Partial coverage. Providers without a fetched SKU are omitted. See GET /api/pricing."},"decideHint":"/api/decide?jtbd=production-guardrail-evals","human":"/providers/galileo","compare":"/compare/langsmith-vs-galileo"},{"id":"comet-opik","slug":"comet-opik","name":"Comet Opik","tagline":"Pick when you already live in Comet or want OSS Opik + optional cloud. Langfuse remains cheaper OSS default…","website":"https://www.comet.com/site/products/opik/","status":"active","overall":8.04,"scoreKind":"curated_estimate","confidence":"high","scoreAsOf":"2026-09-14","deltaOverallVsSubject":-0.05,"roles":["same_jtbd_runner"],"sharedJtbdSlugs":["llm-tracing","evals","oss-evals","ml-dataset-versioning"],"pricing":{"normalizedUsdPerMillionTokens":null,"normalizationStatus":"unavailable","normalizationReason":"no_sourced_price","shape":"prose_notes_only","filterable":false,"priceSortEligible":false,"priceSortKeyUsdPerMillionInputTokens":null,"rows":[],"notesExcerpt":"As of 2026-09-14: Opik OSS self-host free. Comet Cloud free tier + Pro Cloud ~$19/mo class with ~100k spans / 60-day retention (confirm live comet.com/site/pricing). Fits teams already on Comet ML experiment tracking.","notesCheck":{"status":"no_known_contradiction","pairs":[],"review":null,"note":null},"lastReviewed":"2026-09-14","scoreAsOf":"2026-09-14","website":"https://www.comet.com/site/products/opik/","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."},"decideHint":"/api/decide?jtbd=llm-tracing","human":"/providers/comet-opik","compare":"/compare/langsmith-vs-comet-opik"},{"id":"confident-ai","slug":"confident-ai","name":"Confident AI","tagline":"Best when your team already thinks in pytest/DeepEval. Braintrust remains Depot hosted-evals default…","website":"https://www.confident-ai.com","status":"active","overall":7.99,"scoreKind":"curated_estimate","confidence":"high","scoreAsOf":"2026-09-14","deltaOverallVsSubject":-0.1,"roles":["same_jtbd_runner"],"sharedJtbdSlugs":["evals","oss-evals","production-guardrail-evals","continuous-eval-ci"],"pricing":{"normalizedUsdPerMillionTokens":null,"normalizationStatus":"unavailable","normalizationReason":"no_sourced_price","shape":"prose_notes_only","filterable":false,"priceSortEligible":false,"priceSortKeyUsdPerMillionInputTokens":null,"rows":[],"notesExcerpt":"As of 2026-09-14 (confident-ai.com/pricing): Free forever (2 seats, 1 project, 5 test runs/week, 1 GB-mo traces). Starter $200/mo (5 projects, 5 GB-mo then $1/GB-mo). Team $2,000/mo (unlimited projects, 75 GB-mo). Enterprise custom (on-prem, HIPAA, residency). Online eval tokens …","notesCheck":{"status":"no_known_contradiction","pairs":[],"review":null,"note":null},"lastReviewed":"2026-09-14","scoreAsOf":"2026-09-14","website":"https://www.confident-ai.com","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."},"decideHint":"/api/decide?jtbd=evals","human":"/providers/confident-ai","compare":"/compare/langsmith-vs-confident-ai"},{"id":"arize-phoenix","slug":"arize-phoenix","name":"Arize Phoenix","tagline":"Choose Phoenix when you want open-source observability you can own. Cloud Arize when enterprise wants a…","website":"https://phoenix.arize.com","status":"active","overall":8.44,"scoreKind":"curated_estimate","confidence":"high","scoreAsOf":"2026-09-14","deltaOverallVsSubject":0.35,"roles":["same_jtbd_runner"],"sharedJtbdSlugs":["llm-tracing","evals","agent-trace-session-replay"],"pricing":{"normalizedUsdPerMillionTokens":null,"normalizationStatus":"unavailable","normalizationReason":"no_sourced_price","shape":"prose_notes_only","filterable":false,"priceSortEligible":false,"priceSortKeyUsdPerMillionInputTokens":null,"rows":[],"notesExcerpt":"Open-source Phoenix free to self-host; Arize AX cloud paid; OpenTelemetry-friendly.","notesCheck":{"status":"no_known_contradiction","pairs":[],"review":null,"note":null},"lastReviewed":"2026-09-14","scoreAsOf":"2026-09-14","website":"https://phoenix.arize.com","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."},"decideHint":"/api/decide?jtbd=llm-tracing","human":"/providers/arize-phoenix","compare":"/compare/langsmith-vs-arize-phoenix"},{"id":"langwatch","slug":"langwatch","name":"LangWatch","tagline":"Strong when you need multi-turn/voice agent simulations with EU self-host. Langfuse default tracing…","website":"https://langwatch.ai","status":"active","overall":8.06,"scoreKind":"curated_estimate","confidence":"high","scoreAsOf":"2026-09-14","deltaOverallVsSubject":-0.03,"roles":["same_jtbd_runner"],"sharedJtbdSlugs":["llm-tracing","evals","oss-evals"],"pricing":{"normalizedUsdPerMillionTokens":null,"normalizationStatus":"unavailable","normalizationReason":"no_sourced_price","shape":"prose_notes_only","filterable":false,"priceSortEligible":false,"priceSortKeyUsdPerMillionInputTokens":null,"rows":[],"notesExcerpt":"As of 2026-09-14 (langwatch.ai/pricing): Developer free (50k events/mo, 14-day access, 2 users). Growth €29/core-seat/mo + 200k events then €5/100k; 30-day retention then €3/GB. Enterprise hybrid/self-host/on-prem + marketplace billing. Scenario SDK OSS (Python+TS); voice agent s…","notesCheck":{"status":"no_known_contradiction","pairs":[],"review":null,"note":null},"lastReviewed":"2026-09-14","scoreAsOf":"2026-09-14","website":"https://langwatch.ai","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."},"decideHint":"/api/decide?jtbd=llm-tracing","human":"/providers/langwatch","compare":"/compare/langsmith-vs-langwatch"},{"id":"honeyhive","slug":"honeyhive","name":"HoneyHive","tagline":"Use the free Developer tier to stand up agent evals/traces in a day; Enterprise when you need self-host…","website":"https://www.honeyhive.ai","status":"active","overall":8.02,"scoreKind":"curated_estimate","confidence":"high","scoreAsOf":"2026-09-14","deltaOverallVsSubject":-0.07,"roles":["same_jtbd_runner"],"sharedJtbdSlugs":["llm-tracing","evals","production-guardrail-evals"],"pricing":{"normalizedUsdPerMillionTokens":null,"normalizationStatus":"unavailable","normalizationReason":"no_sourced_price","shape":"prose_notes_only","filterable":false,"priceSortEligible":false,"priceSortKeyUsdPerMillionInputTokens":null,"rows":[],"notesExcerpt":"As of 2026-09-14 (honeyhive.ai/pricing): Developer free (no card) — 10k events/mo, 5 users, 1 workspace, 30-day retention, 1k RPM, evals + prompt versioning + CI. Enterprise custom (unlimited users/workspaces, SAML, custom retention, SLA, DPA/BAA, multi-tenant / single-tenant / h…","notesCheck":{"status":"no_known_contradiction","pairs":[],"review":null,"note":null},"lastReviewed":"2026-09-14","scoreAsOf":"2026-09-14","website":"https://www.honeyhive.ai","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."},"decideHint":"/api/decide?jtbd=llm-tracing","human":"/providers/honeyhive","compare":"/compare/langsmith-vs-honeyhive"},{"id":"logfire","slug":"logfire","name":"Pydantic Logfire","tagline":"Best when the agent is already PydanticAI/Python and you want app+LLM traces together. Langfuse stays Depot…","website":"https://pydantic.dev/logfire","status":"active","overall":8.33,"scoreKind":"curated_estimate","confidence":"high","scoreAsOf":"2026-09-14","deltaOverallVsSubject":0.24,"roles":["same_jtbd_runner"],"sharedJtbdSlugs":["llm-tracing","evals"],"pricing":{"normalizedUsdPerMillionTokens":null,"normalizationStatus":"unavailable","normalizationReason":"no_sourced_price","shape":"prose_notes_only","filterable":false,"priceSortEligible":false,"priceSortKeyUsdPerMillionInputTokens":null,"rows":[],"notesExcerpt":"As of 2026-09-14 (pydantic.dev/pricing): Personal free — 10M records/mo hard-capped, 1 seat, 3 projects, 30d. Team $49/mo (5 seats, $25 extra, 10M then $2/M, spend cap). Growth $249/mo unlimited seats/projects, up to 90d, BAA boilerplate. Enterprise cloud/dedicated/self-host. $0/…","notesCheck":{"status":"no_known_contradiction","pairs":[],"review":null,"note":null},"lastReviewed":"2026-09-14","scoreAsOf":"2026-09-14","website":"https://pydantic.dev/logfire","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."},"decideHint":"/api/decide?jtbd=llm-tracing","human":"/providers/logfire","compare":"/compare/langsmith-vs-logfire"}],"rankContract":{"style":"editorial_weighted","notAnElo":true,"note":"deltaOverallVsSubject is Depot overall (0–10) minus the subject. It is not Arena Elo and not an Artificial Analysis index."},"freshness":{"scoreAsOfMin":"2026-09-14","scoreAsOfMax":"2026-10-19","contractAsOf":"2026-10-03"},"honesty":["Alternatives are other catalog providers that share a JTBD as pick or runner-up. If fewer than three exist, same-category active providers fill the list and are labeled same_category.","Overall deltas are catalog scores. kind=curated_estimate is not a lab measurement.","Pricing rows are sourced or explicitly null. Do not parse pricingNotes. A single normalized USD figure is set only for a provider with exactly one token row."],"links":{"human":"/alternatives/langsmith","machine":"/api/alternatives?provider=langsmith","provider":"/api/providers/langsmith","canonical":"/api/canonical"}}