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Undetectable AI

Detects AI text and rewrites it to read more human.

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AI DetectionFreemiumWe checked the prices on undetectable.ai on 27 Sep 2026.

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What is Undetectable AI?

Detects AI text and rewrites it to read more human.

Who is Undetectable AI best for?

Undetectable AI is best for students and writers who check drafts for AI text and rewrite the flagged parts.

  • Checking work before you submit

    The detector marks which sentences read as AI-written, and every paid plan includes unlimited detection.

  • Rewriting stiff AI drafts

    The humanizer changes sentence structure, vocabulary and tone so the text reads more like a person wrote it.

  • Writing in other languages

    Its tools work in more than 50 languages, though the maker says English gets the most accurate results.

  • Working in Google Docs and Gmail

    A Chrome extension brings detection and rewriting to the pages you already write on.

How much does Undetectable AI cost?

Undetectable AI's monthly plans cost $19 for 20,000 words, $31 for 35,000 words, $42 for 50,000 words and from $64 for 80,000 words, and its free trial covers 250 words.

20K words$19.00Per month
  • 20,000 words a month
  • Unlimited AI detection and Human Auto Typer
  • Works with the API
35K words$31.00Per month
  • 35,000 words a month
  • 7% less per word than the 20K plan
  • Unlimited AI detection and Human Auto Typer
50K words$42.00Per month
  • 50,000 words a month
  • 12% less per word than the 20K plan
  • Unlimited AI detection and Human Auto Typer
80K words and upFrom $64.00Per month
  • 80,000 words a month for $64
  • Unlimited words for $290 a month, without API access
  • Unlimited words with API access for $990 a month

Yearly billing adds a smaller 10,000-word plan, and any yearly plan can be tried free for 3 days before the first charge. The free trial is limited to 250 words. If humanized text is flagged as not human, Undetectable AI refunds the cost of that humanization. A business plan with non-expiring credits and white labelling is priced on request. Full pricing on undetectable.ai. We checked these prices on .

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What are the best Undetectable AI alternatives?

Three tools on Recaply do Undetectable AI's job.

Questions about Undetectable AI

What is Undetectable AI?

Detects AI text and rewrites it to read more human.

Who is Undetectable AI for?

Undetectable AI is best for students and writers who check drafts for AI text and rewrite the flagged parts.

Is Undetectable AI free?

Only as a trial. Undetectable AI's free trial is limited to 250 words, and any yearly plan can be tried free for 3 days before it charges. After that, monthly plans start at $19 for 20,000 words.

How much does Undetectable AI cost?

Undetectable AI's paid plans are 20K words at $19.00 per month, 35K words at $31.00 per month, 50K words at $42.00 per month and 80K words and up at From $64.00 per month.

What are the best Undetectable AI alternatives?

The closest alternatives on Recaply are StealthWriter, WriteHuman and BypassGPT.

Where can I try Undetectable AI?

On its official website, undetectable.ai.

Does Undetectable AI offer refunds?

Undetectable AI promises to refund the cost of a humanization when its output is flagged as not human by an AI detector. Its pricing page points to the help center for the conditions that apply.