Free plan: $0 per month with 100 tool calls per day and 10 new integrations per month. Premium: $50 per month with 1,000 tool calls per day and 100 new integrations per month. Business: contact for pricing with 100,000+ tool calls per day and 1,000+ new integrations per month.
Key features
Hierarchical traces capture every LLM call, tool invocation, and retrieval step
LLM-as-a-judge, heuristic functions, or human review evaluations
Prompt management with one-click deployments and rollbacks
Playground to test prompts on real production inputs and compare models
Experiments with test cases and side-by-side comparison
Human annotation and collaborative human-in-the-loop workflows
Cost and latency monitoring with dashboards and alerts
REST APIs and Query SDK for data access
Langfuse Assistant to automate the AI engineering loop
Faster and more reliable than browser agents
Self-healing integrations that detect and repair breaks automatically
Build integrations from your coding agent with prompts
Authentication and 2FA handled automatically
No deployment or infrastructure required
Support for legacy portals and internal tools
Integration with any website type
Secure credential storage with PII redaction
What makes it different
MIT licensed open source platform with no data lock-in
Enterprise scale architecture handling billions of monthly events
Works with any language and framework with no framework lock-in
Async by default so tracing never blocks your application
7x faster performance than browser agents
Self-healing integrations repair automatically when websites change
No API key or credential storage required for basic use
Open source framework
Handles anti-bot measures and rate limiting automatically