# LangChain vs Langfuse

**Leader by vioscaleAI score:** LangChain

| Attribute | LangChain | Langfuse |
|---|---|---|
| **vioscaleAI score** | 79 (69% (medium)) | 66.4 (56% (medium)) |
| activity.commits_last_30d | 100 | 100 |
| adoption.dependent_repos | 18,663 | 0 |
| adoption.github_stars | 147,461 | 35,781 |
| adoption.package_downloads_weekly | 3,725,877 | 6,493,381 |
| content.faq | `[{"answer":"An agent engineering platform providing end-to-end observability, evaluation, and deployment capabilities for production AI agents with support for multiple frameworks and deployment modes. It is indexed under MLOps & LLMOps Tools.","source":"https://www.langchain.com/pricing","question":"What is LangChain?","confidence":0.6},{"answer":"LangChain is open source, so it can be self-hosted and used at no licence cost. It is released under the MIT licence. A commercial or hosted edition starts at $1. Prices are published openly on the vendor's own pricing page. Pricing changes often, so verify at source before relying on it.","source":"https://www.langchain.com/pricing","question":"Is LangChain free to use?","confidence":0.6},{"answer":"We have confirmed browser-based access to LangChain. That is the extent of what we could verify from public sources, so it may well offer desktop or mobile clients we have not indexed.","source":"https://www.langchain.com/pricing","question":"What platforms does LangChain support?","confidence":0.6},{"answer":"Yes. LangChain can be deployed cloud / SaaS, hybrid and self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://www.langchain.com/pricing","question":"Can LangChain be self-hosted?","confidence":0.6},{"answer":"We have confirmed 8 integrations for LangChain, including OpenAI, Anthropic, Cohere, Google, Azure AI Search, Microsoft Fabric, Azure Kubernetes Service and OpaquePrompts. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://www.langchain.com/pricing","question":"What does LangChain integrate with?","confidence":0.6},{"answer":"We have independently confirmed SOC 2, ISO 27001, HIPAA and GDPR for LangChain. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as LangChain not holding them. Always confirm compliance directly before you rely on it.","source":"https://trust.langchain.com","question":"What security certifications does LangChain have?","confidence":0.7},{"answer":"Yes. LangChain is published under the MIT licence, a permissive licence that generally allows commercial use and modification. Licence terms can change between releases, so verify against the repository for the version you intend to use.","source":"https://github.com/langchain-ai/langchain","question":"Is LangChain open source?","confidence":0.99},{"answer":"LangChain is available worldwide. The vendor is headquartered in the United States.","source":"https://www.langchain.com/pricing","question":"Where is LangChain available?","confidence":0.75}]` | `[{"answer":"A comprehensive observability and development platform that combines tracing, prompt management, evaluation, and experimentation, enabling teams to understand LLM behavior in production and ship improved applications with confidence It is indexed under MLOps & LLMOps Tools.","source":"https://langfuse.com/changelog/2025-08-08-openai-pricing-availability","question":"What is Langfuse?","confidence":0.6},{"answer":"Langfuse is open source, so it can be self-hosted and used at no licence cost. It is released under the MIT licence. Paid editions are also offered: Core and Enterprise, priced on request. Pricing changes often, so verify at source before relying on it.","source":"https://langfuse.com/changelog/2025-08-08-openai-pricing-availability","question":"Is Langfuse free to use?","confidence":0.6},{"answer":"Langfuse supports the web and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://langfuse.com/changelog/2025-08-08-openai-pricing-availability","question":"What platforms does Langfuse support?","confidence":0.6},{"answer":"Yes. Langfuse can be deployed cloud / SaaS and self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://langfuse.com/changelog/2025-08-08-openai-pricing-availability","question":"Can Langfuse be self-hosted?","confidence":0.6},{"answer":"We have confirmed 21 integrations for Langfuse, including LangChain, Vercel AI SDK, LiteLLM, Pydantic AI, Google ADK, CrewAI, LiveKit and Haystack, plus 13 more. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://langfuse.com/changelog/2025-08-08-openai-pricing-availability","question":"What does Langfuse integrate with?","confidence":0.6},{"answer":"We have independently confirmed SOC 2, ISO 27001, HIPAA and GDPR for Langfuse. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as Langfuse not holding them. Always confirm compliance directly before you rely on it.","source":"https://langfuse.com","question":"What security certifications does Langfuse have?","confidence":0.48},{"answer":"Yes. Langfuse is published under the MIT licence, a permissive licence that generally allows commercial use and modification. Licence terms can change between releases, so verify against the repository for the version you intend to use.","source":"https://www.npmjs.com/package/langfuse","question":"Is Langfuse open source?","confidence":0.85}]` |
| deployment.options | `{"cloud":true,"hybrid":true,"self_hosted":true}` | `{"cloud":true,"self_hosted":true}` |
| description.long | A unified developer platform consisting of open-source frameworks and commercial tools for building, testing, monitoring, and deploying AI agents and LLM-powered applications. | A comprehensive observability and development platform that combines tracing, prompt management, evaluation, and experimentation, enabling teams to understand LLM behavior in production and ship improved applications with confidence |
| features.capabilities | `{"role":"observability","evaluation":true,"a2a_support":true,"mcp_support":true,"open_source":true,"managed_cloud":true,"model_serving":true,"pricing_model":"usage-based-saas","self_hostable":true,"multi_provider":true,"vpc_deployment":true,"otel_compatible":true,"deployment_model":"managed-platform","no_train_on_data":"unknown","streaming_output":true,"human_in_the_loop":true,"llm_observability":true,"prompt_management":true,"framework_agnostic":true,"multi_language_sdk":true,"experiment_tracking":true,"memory_architecture":"persistent","orchestration_model":"multi-agent-sequential","tool_function_calling":true,"code_execution_sandbox":true,"model_provider_agnostic":true}` | `{"role":"observability","evaluation":true,"managed_cloud":true,"model_serving":false,"pricing_model":"free_open_source","self_hostable":true,"multi_provider":true,"vpc_deployment":true,"otel_compatible":true,"llm_observability":true,"prompt_management":true,"architecture_model":"open_source_self_hosted","framework_agnostic":true,"experiment_tracking":true,"token_cost_and_latency_waterfall_charts":true,"prompt_playground_and_in_dashboard_replay":true,"multi_step_agentic_workflow_distributed_tracing":true,"opentelemetry_openllmetry_native_export_support":true,"user_feedback_score_api_for_thumbs_up_down_tags":true,"native_integration_with_langchain_and_llamaindex":true}` |
| integrations.count | 1,000 | 100 |
| integrations.list | `[{"name":"OpenAI"},{"name":"Anthropic"},{"name":"Cohere"},{"name":"Google"},{"name":"Azure OpenAI"},{"name":"Azure AI Search"},{"name":"Microsoft Fabric"},{"name":"Azure Kubernetes Service"},{"name":"OpaquePrompts"},{"name":"AWS","native":true,"category":"cloud_platform","direction":"bidirectional"},{"name":"MCP (Model Context Protocol)","native":true,"category":"tool_framework","direction":"bidirectional"}]` | `[{"name":"LangChain"},{"name":"Vercel AI SDK"},{"name":"LiteLLM"},{"name":"Pydantic AI"},{"name":"Google ADK"},{"name":"CrewAI"},{"name":"LiveKit"},{"name":"Haystack"},{"name":"LlamaIndex"},{"name":"OpenAI"},{"name":"Anthropic"},{"name":"Amazon Bedrock"},{"name":"Azure OpenAI"},{"name":"Mistral AI"},{"name":"Google Gemini"},{"name":"xAI"},{"name":"vLLM"},{"name":"Groq"},{"name":"OpenAI SDK"},{"name":"Cohere"},{"name":"Elasticsearch"},{"name":"OpenSearch"},{"name":"Hugging Face"},{"name":"OpenTelemetry","native":true,"category":"observability","direction":"bidirectional"}]` |
| language.primary | Python | TypeScript |
| license.spdx | MIT | MIT |
| market.availability | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"web":true}` | `{"web":true}` |
| pricing | `{"type":"hybrid","plans":[{"free":true,"name":"Developer","summary":"Free, 1 seat, 5k traces/month","features":["1 free seat","5000 base traces per month","Full LangSmith access"],"minSeats":1,"commitment":"monthly","components":[{"kind":"fixed","amount":0,"period":"month","currency":"USD"}],"description":"Personal projects with full LangSmith access and limited monthly trace allowance","contactSales":false,"includedLimits":{"traces":"5000/month"}},{"free":false,"name":"Plus","summary":"$39/seat/month, unlimited seats, 10k traces/month included","features":["Unlimited seats","10000 base traces per month","1 free small serverless deployment","Team collaboration","LangSmith Deployment service access"],"commitment":"monthly","components":[{"kind":"per_unit","unit":"seat","amount":39,"period":"month","currency":"USD"}],"description":"Teams with moderate usage, collaboration needs, and one free small serverless deployment","contactSales":false,"includedLimits":{"traces":"10000/month","serverless_deployments":"1 small"}},{"free":false,"name":"Enterprise","summary":"Custom pricing, annual billing","features":["Advanced administration options","Enhanced security controls","Priority support","Custom deployment options"],"commitment":"annual","description":"Advanced administration, enhanced security, and custom deployment options","contactSales":true}],"addOns":[{"name":"Serverless Deployments"},{"name":"Dedicated Deployments"}],"summary":"Free Developer plan. Plus plan from $39/user/mo with unlimited seats. Enterprise custom pricing billed annually.","currency":"USD","freeTier":true,"sourceUrl":"https://www.langchain.com/pricing","retrievedAt":"2026-10-05T11:09:38.893Z","startingPrice":{"unit":"seat","amount":39,"period":"month","currency":"USD"},"billingPeriods":["month","year"]}` | `{"type":"subscription","plans":[{"free":true,"name":"Hobby"},{"free":false,"name":"Core"},{"free":false,"name":"Enterprise"}],"summary":"Multiple tiers available; specific pricing not shown in provided text","freeTier":true,"sourceUrl":"https://langfuse.com/changelog/2025-08-08-openai-pricing-availability","retrievedAt":"2026-08-13T09:38:11.860Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | freemium | freemium |
| pricing.price_level | mid | free |
| pricing.starting_price | `{"amount":39,"currency":"USD"}` | - |
| pricing.transparent | yes | no |
| release.history | 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| `[{"url":"https://github.com/langfuse/langfuse/releases/tag/v4.58.0","date":"2026-10-13T07:05:09Z","type":"stable","version":"v4.58.0"},{"url":"https://github.com/langfuse/langfuse/releases/tag/v4.57.0","date":"2026-10-12T17:20:29Z","type":"stable","version":"v4.57.0"},{"url":"https://github.com/langfuse/langfuse/releases/tag/v3.225.12","date":"2026-10-12T21:43:09Z","type":"stable","version":"v3.225.12"},{"url":"https://github.com/langfuse/langfuse/releases/tag/v4.56.0","date":"2026-10-09T10:13:50Z","type":"stable","version":"v4.56.0"},{"url":"https://github.com/langfuse/langfuse/releases/tag/v4.55.0","date":"2026-10-08T13:36:14Z","type":"stable","version":"v4.55.0"},{"url":"https://github.com/langfuse/langfuse/releases/tag/v4.54.0","date":"2026-10-07T08:55:56Z","type":"stable","version":"v4.54.0"},{"url":"https://github.com/langfuse/langfuse/releases/tag/v4.53.0","date":"2026-10-06T12:27:00Z","type":"stable","version":"v4.53.0"},{"url":"https://github.com/langfuse/langfuse/releases/tag/v4.52.0","date":"2026-10-06T08:07:37Z","type":"stable","version":"v4.52.0"},{"url":"https://github.com/langfuse/langfuse/releases/tag/v4.51.0","date":"2026-10-05T15:47:49Z","type":"stable","version":"v4.51.0"},{"url":"https://github.com/langfuse/langfuse/releases/tag/v4.50.0","date":"2026-10-02T10:13:55Z","type":"stable","version":"v4.50.0"},{"url":"https://github.com/langfuse/langfuse/releases/tag/v4.49.0","date":"2026-10-01T09:58:56Z","type":"stable","version":"v4.49.0"},{"url":"https://github.com/langfuse/langfuse/releases/tag/v4.48.0","date":"2026-09-30T10:12:22Z","type":"stable","version":"v4.48.0"},{"url":"https://github.com/langfuse/langfuse/releases/tag/v4.47.0","date":"2026-09-29T08:25:01Z","type":"stable","version":"v4.47.0"},{"url":"https://github.com/langfuse/langfuse/releases/tag/v4.46.0","date":"2026-09-25T14:20:07Z","type":"stable","version":"v4.46.0"},{"url":"https://github.com/langfuse/langfuse/releases/tag/v4.45.4","date":"2026-09-25T09:41:43Z","type":"stable","version":"v4.45.4"},{"url":"https://github.com/langfuse/langfuse/releases/tag/v4.45.3","date":"2026-09-25T09:19:59Z","type":"stable","version":"v4.45.3"},{"url":"https://github.com/langfuse/langfuse/releases/tag/v4.45.2","date":"2026-09-24T19:16:32Z","type":"stable","version":"v4.45.2"},{"url":"https://github.com/langfuse/langfuse/releases/tag/v4.45.1","date":"2026-09-24T12:53:12Z","type":"stable","version":"v4.45.1"},{"url":"https://github.com/langfuse/langfuse/releases/tag/v4.45.0","date":"2026-09-24T12:15:42Z","type":"stable","version":"v4.45.0"},{"url":"https://github.com/langfuse/langfuse/releases/tag/v4.44.0","date":"2026-09-24T09:07:02Z","type":"stable","version":"v4.44.0"}]` |
| reliability.sla_pct | 99.5 | - |
| reliability.status_page | yes | yes |
| security.disclosure_policy | yes | - |
| security.gdpr | yes | yes |
| security.hipaa | yes | yes |
| security.iso27001 | yes | yes |
| security.scorecard | 5.8 | - |
| security.soc2 | yes | yes |
| security.trust_center | https://www.langchain.com/blog/building-governed-agents-a-framework-for-cost-control-and-compliance | https://langfuse.com/docs/security-and-guardrails |
| security.vulnerabilities | `{"count":21,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=langchain&per_page=100","last_12m":2,"max_severity":"CRITICAL"}` | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=helm&package_name=rock8s%2Flangfuse&per_page=100","last_12m":0,"max_severity":null}` |

## Capabilities (MLOps & LLMOps Tools)

| Capability | LangChain | Langfuse |
|---|:--:|:--:|
| **Core** |  |  |
| Tool role | LLM observability / eval | LLM observability / eval |
| **Deployment** |  |  |
| Self-hostable / OSS core | ✓ | ✓ |
| Managed cloud available | ✓ | ✓ |
| On-prem / VPC deployment | ✓ | ✓ |
| **Observability** |  |  |
| LLM tracing / observability | ✓ | ✓ |
| Evaluation (offline / LLM-judge / human) | ✓ | ✓ |
| **Dev** |  |  |
| Prompt management + versioning | ✓ | ✓ |
| **Tracking** |  |  |
| Experiment tracking / model registry | ✓ | ✓ |
| **Serving** |  |  |
| Model serving / inference endpoint | ✓ | ✗ |
| **Interop** |  |  |
| OpenTelemetry / OpenLLMetry compatible | ✓ | ✓ |
| Framework-agnostic | ✓ | ✓ |
| **Gateway** |  |  |
| Multi-provider model support | ✓ | ✓ |
| **Data** |  |  |
| No-train-on-customer-data guarantee | Unknown | - |

*Source: vioscaleAI. Generated 2026-10-16T20:58:20.284Z. "-" = undocumented, not absent.*