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Best AI Humanizers (May 2026) — Ranked by Real Detector Tests

Vendors claim 99% undetectability. We found 28–87% — and most fall below 70%. Three tools actually work. Undetectable.ai, HIX Bypass, and Phrasly have held the top three positions in every test we reviewed. No other tool has consistently crossed 70% on GPTZero. This is the May 2026 snapshot — products …