Undetectable AI
Rewrites machine-generated text so it reads as human and slips past AI detectors.
why this verdict
Downgrade — pay for the workflow, not the AI
QuillBot and Grammarly cover the headline feature free, so the $15/mo is now paying for the workflow around it.
- A named launch, not a vibe named, unlinked
- Newer models producing natural prose that needs no humanising pass at all. OpenAI, May 13, 2025 — no announcement link recorded yet.
- How much of the job it covers headline only editorial call
- The headline feature, but not the workflow, data or integrations around it.
- Is there a free way to do it? yes
- 3 of 3 listed replacements have a usable free tier: QuillBot, Grammarly and Hemingway Editor.
- What the call is worth $180/yr
- $15/mo at the entry paid tier — $180 a year per seat.
- Threatened by
- OpenAI
- Since
- May 13, 2025
- List price
- $15/mo
- Per year
- $180
The backstory
Undetectable AI takes model output and paraphrases it into something detectors score as human, selling the other side of the detection arms race. The trouble is that frontier models already write naturally when prompted well, so the rewriting step adds little and often makes the prose worse. It is wounded because demand tracks detector adoption rather than writing quality, and that demand shrinks as institutions lose faith in detection.
Escape hatches
switching could free up $180/yrGeneral paraphrasing with a usable free tier
quillbot.com open_in_newTone and clarity editing rather than evasion
grammarly.com open_in_newForces plainer sentences you actually wrote
hemingwayapp.com open_in_new3 of 3 replacements have a usable free tier.