AI Undetect 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.

The short answer

Cheaper paid plan: AI Undetect — $5/mo vs $9.99/mo for Undetectable AI
Free plan: Both have one
Public API: Both have one
Higher Trust score: Undetectable AI — 89 vs 72 for AI Undetect
Best fit: AI Undetect: SEO and affiliate writers reworking AI drafts before publishing · Undetectable AI: Marketers cleaning up bulk LLM drafts before publishing

From our own records as of each tool's last check. Anything we have not confirmed is left out rather than guessed. How we verify

AI UndetectRewrites AI-drafted text to read as human and pass detector checks, with a built-in multi-detector scan

Undetectable AIRewrites machine-written drafts to read human, with detection scoring built in

Side by side

Fact	AI Undetect	Undetectable AI
Category	AI Detection & Humanizers	AI Detection & Humanizers
Pricing model	Freemium	Freemium
Starts at	$5/mo	$9.99/mo
Public API	Yes	Yes
Trust score	72 / 100	89 / 100
Platforms	Web, API	Web, API, Chrome extension
Company	—	Undetectable Inc.
Launched	—	2023
Last verified	Oct 15, 2026	Oct 15, 2026

What our research says

AI Undetect

It bundles rewriting and detector checks into one loop, which is the workflow people actually follow, and entry pricing is low. The catch is the category itself: detection engines retrain constantly, so passing today proves nothing about next month, and using it on academic work can breach integrity policies.

Pros

Free allowance to test output quality before paying
Detector panel shows results across multiple engines at once
Low entry price on annual billing
Rewrite API is documented for integration work

Cons

Effectiveness is a moving target as detectors retrain
The company behind the site is not identified anywhere on it
Word caps on lower tiers are easy to exhaust

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 AI Undetect if you need

SEO and affiliate writers reworking AI drafts before publishing
Non-native English speakers smoothing machine-assisted prose
Teams that want rewrite plus detector check in one place

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