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Side-by-side comparison ยท Writing & Translation

Copyleaks vs DeepL

Everything that matters when choosing between them, in one place: our rating, what each can do, what they cost, and the trade-offs.

Copyleaks

3.9

From $0

Best overall

DeepL

4.2

From $10.49/mo

Comparing 2 tools. Add one more if you like.

At a glance

Pick it if: Schools, publishers and businesses that need AI and plagiarism checks together, especially across several languages.

Best overallEasiest to use

Pick it if: Businesses that sell, support or write in more than one language, and anyone who regularly translates documents.

Overview

AttributeCopyleaksDeepL
In one lineChecks text for AI writing and plagiarism in one scan, in over 30 languages.Translates text, whole documents and live conversations, with natural-sounding results.
Pricing modelFreemiumFreemium
Starting price$0$10.49/mo
Free plan Yes Yes
Works with Claude Code Yes Yes

Rating breakdown

Our scores out of 5. The higher bar in each row is highlighted.

AttributeCopyleaksDeepL
Overall rating3.94.2Winner
Ease of useHow quickly someone non-technical gets value from it.
4.0
5.0
FeaturesHow completely it covers its own job, and how well the pieces fit together.
4.5
4.5
Output qualityHow good the results are before you fix them.
3.5
4.0
Value for moneyWhat you get for the price, including the free plan.
3.5
3.5
Speed & reliabilityHow fast it is and how often it falls over.
4.0
4.0

Feature comparison

A tick means it does this today. A dash means we haven't checked.

AttributeCopyleaksDeepL
Access & platform
Free plan Yes Yes
Mobile app No Yes
Desktop appโ€“ Yes
Browser extension Yes Yes
API access Yes Yes
Teams & business
Team workspace Yes Yes
Enterprise plan or SSO Yes Yes
Connects to other apps Yes Yes
Open source or self-hosted Yes No
AI abilities
Works with your files Yes Yes
Understands images Yes Yes
Makes images No No
Makes video No No
Writes code No No
Runs agents or automations No No
Learns your brand or styleโ€“ Yes
Works in many languages Yes Yes
Capabilities score10/ 1712/ 17

Pricing

Plans as listed on each vendor's site when we last checked. Confirm before you buy.

AttributeCopyleaksDeepL
Plans

Free

$0

Quick one-off checks.

Free

Free

Occasional emails and short text.

PersonalOur pick

$16.99/mo, or $13.99/mo billed yearly

Individuals checking work regularly.

IndividualOur pick

$10.49/mo, or $8.74/mo billed yearly

One person translating most weeks.

Pro

$99.99/mo, or $74.99/mo billed yearly

Teams and agencies.

Team

$34.49/user/mo, or $28.74/user/mo billed yearly

Small teams sharing glossaries.

Enterprise and Education

Custom

Companies and schools at scale.

Business

$68.99/user/mo, or $57.49/user/mo billed yearly

Teams translating all day.

Enterprise

Custom

Large organisations with security reviews.

Which plan to pickTry the free checker first. Personal covers about 100 pages a month, which suits most individuals. Only move to Pro if a team needs seats or you want website scans. One credit covers 250 words or one image.Start on Free. If you translate documents or customer emails every week, Individual on a yearly plan is the sweet spot and stops DeepL keeping your text. Move to Team only when several people need the same glossary.

Key features

AttributeCopyleaksDeepL
Standout features
  • AI and plagiarism in one report
  • Many languages
  • AI image detection
  • Website scans
  • Works where you are
  • API and school integrations
  • Text translation
  • Document translation
  • Glossaries and style rules
  • DeepL Write
  • DeepL Voice
  • Apps and API

Pros and cons

AttributeCopyleaksDeepL
Pros
  • AI and plagiarism checks in one report
  • Best multilingual coverage of the major detectors
  • Catches plagiarism translated from another language
  • MCP access lets you scan from Claude
  • Checks images as well as text
  • More natural translations than Google Translate in most European languages
  • Documents keep their formatting after translation
  • Glossaries keep your terms consistent
  • Paid plans don't store or train on your text
  • A European company, which matters to businesses avoiding US tools
Cons
  • Like all detectors, it can flag human writing
  • Personal plan's word allowance is small
  • Big jump in price from Personal to Pro
  • Switching plans wipes unused credits, and refunds are strict
  • Overlaps almost completely with Originality.ai
  • Free plan is small: 50,000 characters and one file a month
  • Weaker on Japanese, Chinese and Korean than a good chat assistant, and newer languages are uneven
  • Many complaints about renewal charges, refused refunds and slow support, so diarise the end of any trial
  • Long-time users report it got slower and less literal in 2026, sometimes rewording the meaning, so legal text still needs a human
  • Glossary and file limits are tight on the cheaper plans

Who each one is for

AttributeCopyleaksDeepL
Best for
  • AI and plagiarism checks in one report
  • Checking content in languages other than English
  • Scanning a whole website for copied pages
  • Checking images for AI
  • Translating Word, PowerPoint and PDF files with layout kept
  • Customer emails in another language
  • Keeping product terms consistent with glossaries
  • Live translated meetings
  • Polishing English as a second language
You'll find it used by
  • Schools and universities
  • Publishers
  • Content agencies
  • Compliance teams
  • Students
  • Exporters and importers
  • Customer support teams
  • Agencies
  • Translators
  • Legal and HR teams

Questions people ask

Which is better, Copyleaks or DeepL?

DeepL scores highest overall in our ratings (Copyleaks 3.9/5 and DeepL 4.2/5). Copyleaks is best for AI and plagiarism checks in one report and checking content in languages other than English. DeepL is best for Translating Word, PowerPoint and PDF files with layout kept and customer emails in another language.

Which is cheaper, Copyleaks or DeepL?

Copyleaks: There's a free plan, and paid plans start at $0. DeepL: There's a free plan, and paid plans start at $10.49/mo.

Which is easier to use, Copyleaks or DeepL?

DeepL rates highest for ease of use in our scores. Businesses that sell, support or write in more than one language, and anyone who regularly translates documents.

How we compare

Ratings are our own, from using each tool, across ease of use, features, output quality, value for money, speed & reliability.

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