Know Nota
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Pricing

Start free. Check more when you need to.

Check up to 2,000 words a day free, with no card needed. Upgrade for more words, saved reports and batch checks. Choose weekly, monthly or annual billing.

Prices in USD · cancel any time
Free

Try an AI check on your own writing.

$0 · no card

2,000 words to check each day

  • AI checks for text of at least 10 words
  • Writing measurements and character checks
  • Free writing history reports
  • Scan history in your account
  • Source matching
  • Batch scans
  • Saved AI-check report downloads and sharing
  • API access
Start free
IndividualFor regular checks

For drafts, assignments and regular checks.

$18 /month

300,000 words a month

  • Everything in Free
  • Find matching sources on the web (beta)
  • Download and share saved AI-check reports
  • Batch checks: up to 10 files
  • Choose whether to include your text in saved reports
  • API access
Professional

For educators and editors who check writing every day.

$59 /month

1,200,000 words a month

  • Everything in Individual
  • API access with Bearer keys
  • Batch checks: up to 100 files
Developer

Add AI checks to your app with prepaid credits.

Credits · prepaid
  • Checked words, rounded up to 100
  • Bearer keys, usage by endpoint and day
  • Same JSON as the app, including result limitations
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What each plan unlocks.

FeatureFreeIndividualProfessional
AI checks2,000 words / day300,000 words / mo1,200,000 words / mo
Source checks (beta)—●●
Character check●●●
Writing history reports●●●
Saved AI-check reports: download and share—●●
Batch checks—up to 10 filesup to 100 files
API——●

The comparison shows monthly word allowances. Weekly plans have their own allowances, shown above. Developer credits are charged by checked words, rounded up to 100.

Two kinds of report, explained. A writing history report summarizes the history or file details available in your document and is free on every plan. Downloading and sharing a saved AI-check report is included with Individual and Professional. Your account’s scan history is available on Free too.
Good to know

Understand your AI check.

  • AI detectors can make mistakes. A result is an estimate, not proof of who wrote the text.
  • Use at least 10 words to get an AI result. Under 50 words, results are often wrong: in our test, about 1 in 3 human texts that short was read as AI.
  • Published error rates come from tests on human writing of at least 250 words. They are not the chance that your result is wrong.
  • Long texts may be checked only in part because the model has an input limit.
  • Nota does not identify a specific AI tool or mark individual sentences as AI-written.

Teams and institutions

Need shared access for a team or school? Tell us how you plan to use Nota. Team seats, shared quotas and LMS integrations are not available yet.

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Read the terms and privacy policy before choosing a plan.