Langfuse
Langfuse: A broad observability platform with open-source deployment and accessible paid tiers. Ranked #2 of 26 in LLM Observability Tools by our editors (9.3/10); pricing: Free plan; best for teams seeking balanced open-source observability.
At a glance
- Editor score9.3 / 10
- PricingFree plan
- Best forTeams seeking balanced open-source observability
- Free planYes
- Paid from$29/mo
- LLM tracingYes
- Facts checked20 Sep 2026
Where it wins
- Traces agents, tools, retrieval steps, prompts, costs, and evaluations
- Supports managed cloud and self-hosted deployment
- Includes OpenTelemetry, SDK, framework, model, and workflow integrations
Where it doesn't
- Hobby limits usage, data access, and seats
- Enterprise SSO and RBAC require the Teams Add-on
- Advanced governance and SLA features are reserved for Enterprise
Our verdict on Langfuse
Langfuse is an open-source platform for teams building and operating LLM applications. It captures hierarchical traces for model calls, agents, tool calls, and retrieval steps, while also covering prompt versioning, evaluations, datasets, experiments, human annotation, dashboards, alerts, token usage, and model cost tracking. Developers and organizations running production LLM applications, AI agents, and workflow automation can deploy it as a managed cloud service or on customer infrastructure.
The published plans show a clear freemium path. Hobby costs $0 per month and includes all platform features with limits, 50k units per month, 30 days of data access, 2 users, and community support via GitHub. Core costs $29 per month and raises data access to 90 days, includes 100k units per month, unlimited users, and in-app support. Pro costs $199 per month and adds 3 years of data access, data retention management, unlimited annotation queues, high rate limits, and prioritized in-app support. The Teams Add-on costs $300 per month and adds enterprise SSO, SSO enforcement, fine-grained RBAC, and a dedicated Slack or Microsoft Teams support channel. Enterprise starts at $2,499 per month with audit logs, a SCIM API, custom rate limits, uptime and support SLAs, and a named lead support engineer; another Enterprise option offers custom volume pricing and vendor onboarding.
Langfuse fits teams that want broad visibility across the LLM application lifecycle rather than a narrow tracing layer. Its integrations include OpenTelemetry, Python and JavaScript/TypeScript SDKs, LangChain, LangGraph, OpenAI, Anthropic, Amazon Bedrock, Google Gemini, LiteLLM, LlamaIndex, Ragas, Zapier, and Slack. The trade-off is that retention, scale, support, and governance expand by plan, while enterprise identity controls require an additional paid tier. Choose Langfuse for open-source flexibility and coverage across tracing, evaluation, prompts, retrieval, and costs; consider another option if your needs are limited to lightweight monitoring or require enterprise controls without separate tiering.
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Langfuse pricing
All 5 Langfuse plans and prices →
Langfuse fact sheet
| Free plan | Yes |
|---|---|
| Paid from | $29/mo |
| LLM tracing | Yes |
| LLM evaluations | Yes |
| Prompt management | Yes |
| Agent tracing | Yes |
| Retrieval tracing | Yes |
| Token cost tracking | Yes |
| Deployment options | Both |
| Deployment | Cloud, Self-hosted |
| Platforms | Web |
| Compliance & security | SOC 2, ISO 27001, GDPR, HIPAA |
| Support | Email, Live chat, Community, Docs |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 100+ integrations: OpenTelemetry, Python SDK, JavaScript/TypeScript SDK, LangChain, LangGraph, OpenAI … See all → |
| Pricing | Free plan (source) |
| Website | langfuse.com |
| Facts checked | 20 Sep 2026 |
Langfuse integrations
Langfuse lists 100+ integrations on its own site — the 14 named here are the ones its pages call out.
- OpenTelemetry
- Python SDK
- JavaScript/TypeScript SDK
- LangChain
- LangGraph
- OpenAI
- Anthropic
- Amazon Bedrock
- Google Gemini
- LiteLLM
- LlamaIndex
- Ragas
- Zapier
- Slack
See all Langfuse integrations →
Alternatives to Langfuse
- Arize AXBroad LLM observability with tracing, evaluations, prompts, agents, RAG, and cost tracking.9.4
- Arize PhoenixA free platform for tracing, evaluating, and improving LLM applications.9.2
- OpikA broad, cost-conscious stack for tracing, evaluation, prompts, monitoring, and agent debugging.9.1
See all Langfuse alternatives →
Langfuse vs the competition
- Langfuse vs Arize AX
- Langfuse vs Arize Phoenix
- Langfuse vs Opik
- Langfuse vs W&B Weave
- Langfuse vs LangSmith
- Langfuse vs LangWatch
Compare Langfuse with any tool side by side →
Also Ranked In
Langfuse is ranked in 12 of our directories; the 6 strongest besides LLM Observability Tools.
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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