Suggestions appear as you type. Use the up and down arrows to choose one and Enter to open it.

This page's audience our own tag's counts — open to see them
–Visits
–Page views
–Clicks to vendors
–Time on page
–Reading now
Clicks to vendors, by tool
  • –
Top countries
  • –
Devices
  • –

– · visits, page views and clicks counted by our own tag, which counts more than our checked analytics; every figure rounded down · how we count

Head-to-head · AI Content Detection Software

Undetectable AI vs Copyleaks AI Detector

  • Updated Oct 2026
  • Both researched from official sources
  • 5 checks side by side
Higher score Undetectable AI #2 in AI Content Detection Software 9.1/10 Free plan Free plan✓ 4 of 4 features Try Undetectable AI
Copyleaks AI Detector #4 in AI Content Detection Software 8.7/10 Free plan + paid ✓ 3 of 4 features Visit Copyleaks

Undetectable AI leads on 0 checks, Copyleaks AI Detector on 0, and 5 are even. Who comes out ahead on the 5 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreUndetectable AI · 9.1/10
  • Free planonly Undetectable AI
  • Most featuresUndetectable AI · 4 of 4

Undetectable AI scores higher on our rubric for ai content detection software: 9.1 against 8.7 out of 10; our editors rank them #2 and #4.

Undetectable AI is the better fit for content teams using many integrations. Copyleaks AI Detector is the better fit for large-scale multilingual text detection.

  • Undetectable AI fits best

    Content teams using many integrations

  • Copyleaks AI Detector fits best

    Large-scale multilingual text detection

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature Undetectable AI 9.1/10 Visit ↗ Copyleaks AI Detector 8.7/10 Visit ↗
At a glance
Editor score 9.1 8.7
Ranking #2 in AI Content Detection Software #4 in AI Content Detection Software
Best for Content teams using many integrations Large-scale multilingual text detection
Pricing model Free plan + paid Free plan + paid
Starting price $9.99/mo —
Free plan ✓ (best) Not checked yet
Free trial — —
Deployment Cloud, Browser extension Cloud, Browser extension
Platforms Web, Chrome extension Web, Chrome extension
Integrations 11 integrations 8 integrations
Features Undetectable AI 4/4 · Copyleaks AI Detector 3/4
File uploads ✓ (best) Not checked yet
API access ✓ ✓
Browser extension ✓ ✓
Batch scanning ✓ ✓
Specs
Supported languages Not checked yet Not checked yet
Report exports Not checked yet Not checked yet
Our review
Pros
  • Detects text from ChatGPT, GPT-4, GPT-5, Claude, Gemini, DeepSeek, and Llama
  • Supports multilingual detection, bulk scanning, files, URLs, and PDFs through the API
  • Connects with Google Docs, WordPress, Notion, Gmail, LinkedIn, and more
  • Detects AI-written, mixed, and paraphrased text across 30 languages
  • Combines AI detection and plagiarism results in the same report
  • Offers bulk uploads, browser tools, LMS integrations, and an API
Cons
  • Paid plans limit monthly usage by word allowance
  • The feature set may be broader than needed for simple one-off checks
  • The Chrome extension and API add workflow options that may require configuration
  • Personal is limited to 1,200 unified credits and 300,000 words per billing period
  • Advanced filters, analytics, and website scanning require Pro
  • Enterprise and Education use custom pricing
Our verdict

Undetectable AI is a web-based platform for assessing whether text is likely AI-generated. It is designed for students, educators, writers, marketers, researchers, and businesses that need to review pasted text, uploaded files, documents,…

Read the review →

Copyleaks AI Detector analyzes submitted writing for likely AI-generated text, including passages that mix human and AI writing or have been edited or paraphrased. It is aimed at individuals, educators, and organizations that need…

Read the review →
  1. Undetectable AIAI Content Detection Software 9.1Free plan
  2. Copyleaks AI DetectorAI Content Detection Software 8.7Free plan + paid

Strengths and trade-offs

  • Undetectable AI — where it wins

    • Detects text from ChatGPT, GPT-4, GPT-5, Claude, Gemini, DeepSeek, and Llama
    • Supports multilingual detection, bulk scanning, files, URLs, and PDFs through the API
    • Connects with Google Docs, WordPress, Notion, Gmail, LinkedIn, and more

    Where it doesn't

    • Paid plans limit monthly usage by word allowance
    • The feature set may be broader than needed for simple one-off checks
    • The Chrome extension and API add workflow options that may require configuration

  • Copyleaks AI Detector — where it wins

    • Detects AI-written, mixed, and paraphrased text across 30 languages
    • Combines AI detection and plagiarism results in the same report
    • Offers bulk uploads, browser tools, LMS integrations, and an API

    Where it doesn't

    • Personal is limited to 1,200 unified credits and 300,000 words per billing period
    • Advanced filters, analytics, and website scanning require Pro
    • Enterprise and Education use custom pricing
  • Undetectable AI9.1/10 · Free plan

    Multilingual AI detection with bulk scanning, browser tools, API access, and broad integrations.

    Try Undetectable AIFull verdict →
  • Copyleaks AI Detector8.7/10 · Free plan + paid

    Multilingual AI and plagiarism detection with individual, education, and enterprise options.

    Visit CopyleaksFull verdict →

More comparisons

All AI content detection software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update