About

Human or Eleven? is a blind voice Turing test: hear a short clip, vote human or AI, see how often people get it wrong. The product isn't really the game — it's the running, honestly-measured statistic. No cherry-picking, no rounding tricks, methodology published in full, per-clip data downloadable.

Built by Radek (velvetshark.com) as part of July of Voice — one builder stress-testing the ElevenLabs stack for a month, with receipts.

Colophon

• Voices: ElevenLabs eleven_v3 + Instant Voice Cloning (Clone Roulette clones are of consenting participants only)
• Stack: Next.js 15, Neon Postgres, Vercel + Vercel Blob, Upstash
• All clips pre-generated; no accounts, no uploads, no live TTS
• Source scripts, normalization chain, and the leakage test are in the repo