Rank #830 · on radar since 2026-07-03

whatifd

whatif is an open experiment runner for LLM behavior changes. whatif forks production traces, replays them with a proposed change (cached tool outputs preserve safety), scores the diff, and emits a PR-ready verdict report

Why it's ranked

Every score decomposes into published factors — the same math for every tool, paid or not. Read the methodology →