# Langfuse vs Weights & Biases Weave

**Leader by vioscaleAI score:** Langfuse

| Attribute | Langfuse | Weights & Biases Weave |
|---|---|---|
| **vioscaleAI score** | 66.4 (56% (medium)) | 51.7 (25% (low)) |
| activity.commits_last_30d | 100 | - |
| adoption.dependent_repos | 0 | - |
| adoption.github_stars | 35,781 | - |
| adoption.package_downloads_weekly | 6,493,381 | - |
| content.faq | `[{"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}]` | `[{"answer":"Platform for observability and analysis of production AI agent systems, featuring distributed tracing across multi-agent workflows, built-in evaluation APIs for model and prompt testing, and safety guardrails with pre-built scorers for toxicity, bias, PII detection, and hallucinations. It is indexed under Llm Observability.","source":"https://wandb.ai/site/weave","question":"What is Weights & Biases Weave?","confidence":0.6},{"answer":"Weights & Biases Weave supports the web and iOS. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://wandb.ai/site/weave","question":"What platforms does Weights & Biases Weave support?","confidence":0.6},{"answer":"Yes. Weights & Biases Weave can be deployed cloud / SaaS and self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://wandb.ai/site/weave","question":"Can Weights & Biases Weave be self-hosted?","confidence":0.6},{"answer":"We have confirmed 14 integrations for Weights & Biases Weave, including Slack, LangChain, LlamaIndex, CrowdStrike Falcon AIDR, OpenPI, CoreWeave, NVIDIA and JAX, plus 6 more. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://wandb.ai/site/weave","question":"What does Weights & Biases Weave integrate with?","confidence":0.6}]` |
| deployment.options | `{"cloud":true,"self_hosted":true}` | `{"cloud":true}` |
| description.long | 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 | Platform for observability and analysis of production AI agent systems, featuring distributed tracing across multi-agent workflows, built-in evaluation APIs for model and prompt testing, and safety guardrails with pre-built scorers for toxicity, bias, PII detection, and hallucinations. |
| features.capabilities | `{"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}` | `{"architecture_model":"managed_cloud_saas","pii_redaction_and_prompt_content_masking":true,"prompt_playground_and_in_dashboard_replay":true,"multi_step_agentic_workflow_distributed_tracing":true,"native_integration_with_langchain_and_llamaindex":true}` |
| integrations.count | 100 | 14 |
| integrations.list | `[{"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"}]` | `[{"name":"Slack"},{"name":"LangChain"},{"name":"LlamaIndex"},{"name":"CrowdStrike Falcon AIDR"},{"name":"OpenPI"},{"name":"CoreWeave"},{"name":"NVIDIA"},{"name":"JAX"},{"name":"PyTorch"},{"name":"OpenAI GPT-5.6"},{"name":"OpenAI GPT-5.5"},{"name":"Zhipu GLM-5.2"},{"name":"Alibaba Kimi 2.7"},{"name":"Anthropic Claude Opus 4.8"},{"name":"Webhooks","native":true,"direction":"outbound"},{"name":"OpenAI","native":true,"category":"llm"},{"name":"AWS Bedrock","native":true,"category":"infrastructure"},{"name":"Google ADK","native":true,"category":"agents"},{"name":"Claude Code","native":true}]` |
| language.primary | TypeScript | - |
| license.spdx | MIT | - |
| market.availability | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | - |
| platform.support | `{"web":true}` | `{"web":true}` |
| pricing | `{"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"}` | `{"type":"free","freeTier":true,"sourceUrl":"https://wandb.ai/site/weave","retrievedAt":"2026-10-13T11:19:13.627Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | freemium | free |
| pricing.price_level | free | free |
| pricing.transparent | no | no |
| release.history | `[{"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.status_page | yes | - |
| security.gdpr | yes | - |
| security.hipaa | yes | - |
| security.iso27001 | yes | - |
| security.soc2 | yes | - |
| security.trust_center | https://langfuse.com/docs/security-and-guardrails | - |
| security.vulnerabilities | `{"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 (Llm Observability)

| Capability | Langfuse | Weights & Biases Weave |
|---|:--:|:--:|
| **Capabilities** |  |  |
| Architecture model | Open source self hosted | Managed cloud saas |
| Token cost and latency waterfall charts | ✓ | - |
| Opentelemetry openllmetry native export support | ✓ | - |
| Prompt playground and in dashboard replay | ✓ | ✓ |
| Multi step agentic workflow distributed tracing | ✓ | ✓ |
| User feedback score API for thumbs up down tags | ✓ | - |
| Pii redaction and prompt content masking | - | ✓ |
| Production ab testing of system prompts | - | - |
| Automated anomaly detection for rate limits | - | - |
| Native integration with langchain and llamaindex | ✓ | ✓ |
| SOC2 type ii | - | - |
| Mit or apache permissive oss license | - | - |
| Pricing model | Free open source | - |

*Source: vioscaleAI. Generated 2026-10-17T05:45:12.436Z. "-" = undocumented, not absent.*