· Perseval · Product principles
Exact Groups First, Optional AI Second
Keep failure identity deterministic, use similarity only for navigation, and treat hosted judgments as unproven assistance.
The Perseval Blog
Notes on agent failures, trace evidence, and turning both into evals that hold.
- · Perseval · Agent evaluation
From Production Traces to Regression Evals
A practical loop for turning recurring agent failures into evidence-backed eval definitions.
- · Perseval · Agent evaluation
Why Agent Trajectories Matter More Than the Final Answer
Outcome-only scoring misses the decisions, tool calls, and recoveries that make agent behavior reliable or fragile.