License Key
Most Langfuse features are available in the open source version. Some additional features require a license key. See pricing page for more details on Langfuse Pro and Langfuse Enterprise.
Activating a License Key
After purchasing a license key, you can activate it by adding the following environment variable to your Langfuse deployment:
LANGFUSE_EE_LICENSE_KEY=<your-license-key>Feature Availability
The core Langfuse is open source and MIT-licensed. There are some commercially licensed peripheral features:
| Feature | Cloud - Free | Cloud - Pro | Cloud - Team | Self-Hosted - FOSS | Self-Hosted - Enterprise |
|---|---|---|---|---|---|
| Tracing & UI | ✅ | ✅ | ✅ | ✅ | ✅ |
| Integrations and SDKs | ✅ | ✅ | ✅ | ✅ | ✅ |
| Prompt Management | ✅ | ✅ | ✅ | ✅ | ✅ |
| Analytics / Dashboards | ✅ | ✅ | ✅ | ✅ | ✅ |
| Datasets | ✅ | ✅ | ✅ | ✅ | ✅ |
| Scores | ✅ | ✅ | ✅ | ✅ | ✅ |
| API access | ✅ | ✅ | ✅ | ✅ | ✅ |
| Automated Evaluations | ✅ | ✅ | ✅ | 🛑 | ✅ |
| Prompt Playground | ✅ | ✅ | ✅ | 🛑 | ✅ |
| Annotation Queues | ✅ | ✅ | ✅ | 🛑 | ✅ |
| Data Processing Agreement (DPA) | 🛑 | ✅ | ✅ | 🛑 | ✅ |
| SOC2 & ISO27001 Reports | 🛑 | 🛑 | ✅ | 🛑 | ✅ |
| SSO Enforcement | 🛑 | 🛑 | ✅ | 🛑 | ✅ |
| Project-level RBAC roles | 🛑 | 🛑 | ✅ | 🛑 | ✅ |
| UI Customization | 🛑 | 🛑 | 🛑 | 🛑 | ✅ |