Tech Freedom Circle

Nov 6, 2026 · Artificial Intelligence

Langfuse Three-Level Agent Evaluation: Outcome, Trajectory & Step Framework Principles & Implementation

This article details Langfuse's three-level evaluation framework for AI agents—Outcome, Trajectory, and Step—explaining how its Trace, Evaluator, Dataset, and Experiment components enable decoupled observability and evaluation, with concrete implementation patterns for code-based rules, LLM-as-a-Judge, and human annotation to build reliable CI/CD gates and production monitoring loops.