If you searched "AI code review" six months ago, the landscape looked roughly like CodeRabbit, a handful of GitHub-bot startups, and your IDE's built-in assistant. Today it's a much wider field — Qodo, Greptile, Bito, Coderabbit, Codium, Sourcegraph's Cody, plus every IDE shipping its own "review this change" button — and the answer to "which one...