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SuperHumanizer vs Undetectable AI

Two fact sheets from our own research, side by side — pricing, platforms, API access and status re-checked by us rather than quoted from the vendors. Undetectable AI publishes a starting price ($9.99); SuperHumanizer does not. Both have a free tier. Only Undetectable AI ships a public API.

SuperHumanizerRewrites AI-drafted text to read as human-written and lower AI-detector scores, free with no signup.Undetectable AIRewrites machine-written drafts to read human, with detection scoring built in

Side by side

FactSuperHumanizerUndetectable AI
CategoryAI Detection & HumanizersAI Detection & Humanizers
Pricing modelFreeFreemium
Starts at—$9.99 month
Public APINoYes
PlatformsWebWeb, API, Chrome Ext
Company—Undetectable Inc.
Launched—2023
Last verifiedSep 1, 2026Sep 6, 2026

What our research says

SuperHumanizer

SuperHumanizer is a free, no-signup way to soften the tell-tale patterns of AI-drafted text before publishing it elsewhere. It works fast and includes its own detector check, but its bypass-rate claims come only from the vendor and cannot be verified independently. Treat it as a polishing pass rather than a guarantee against any specific detector.

Pros

  • No account or payment required
  • Two rewrite intensities depending on how much change is needed
  • Built-in AI-detector check on the same page
  • Fast turnaround, seconds per submission

Cons

  • 1,200-word cap per submission forces splitting longer documents
  • Detector-bypass claims are unverified vendor statistics
  • No visible company name or contact details beyond the site itself

Undetectable AI

Buy it only if you accept that passing a detector is a moving target: detector vendors retrain constantly, and text that cleared last month can flag next month. As a multi-format detection dashboard it is more defensible than as a bypass tool.

Pros

  • Detector and rewriter run in one pass, so you see which sentences changed and why
  • Coverage extends past text into image, voice, video and document classifiers
  • Browser extension works inside Docs and Gmail rather than a separate tab
  • Entry tier is genuinely cheap at annual rates

Cons

  • Rewrites often flatten voice and add filler to break statistical patterns
  • Detection on short passages is unreliable in both directions
  • Word quotas drain fast because rejected attempts still consume them
  • The free trial caps at 250 words, barely enough to judge output quality

Which one fits

Choose SuperHumanizer if you need

  • Students and writers who want a quick pass to reduce robotic phrasing
  • Anyone testing how a draft scores on AI detectors before submitting it
  • One-off rewrites under 1,200 words

Choose Undetectable AI if you need

  • Marketers cleaning up bulk LLM drafts before publishing
  • Editors wanting a second opinion on submitted copy
  • Teams screening images and audio for synthetic origin
  • Non-native writers smoothing register and tone

More comparisons

All Undetectable AI alternatives →Browse all AI Detection & Humanizers →