Observability

Langfuse

How Langfuse connects to the rest of the stack: what it depends on, what depends on it, and what it is commonly deployed alongside.

Concepts it implements

Evals

Structured tests for an LLM system: a fixed input, a run, and grading logic applied to the output, where the grader may be a rule, a rubric, a reference answer, a second model or a person.

Where Langfuse sits

How this component relates to the rest of the stack. Items without a link are not covered here yet.

Deployed with

Commonly run alongside

LangGraph

Alternatives

Solves a similar problem differently

LangSmith
Braintrust