Skip to content

Side-by-side comparison · Writing & Translation

DeepL vs GPTZero vs Originality.ai

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

DeepL

4.2

From $10.49/mo

GPTZero

4.2

From $0

Originality.ai

4.1

From $14.95/mo

Comparing 3 tools, the maximum.

At a glance

Easiest to use

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

Pick it if: Teachers, editors and business owners who want a second opinion on whether writing they've been handed came from AI.

Pick it if: Publishers, content agencies, SEO teams and businesses that commission written content and want to check it before publishing.

Overview

AttributeDeepLGPTZeroOriginality.ai
In one lineTranslates text, whole documents and live conversations, with natural-sounding results.Checks whether text was written by AI, with plagiarism and citation checks too.Checks content for AI writing, plagiarism and factual errors before you publish it.
Pricing modelFreemiumFreemiumFreemium
Starting price$10.49/mo$0$14.95/mo
Free plan Yes Yes Yes
Works with Claude Code Yes Yes Yes

Rating breakdown

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

AttributeDeepLGPTZeroOriginality.ai
Overall rating4.24.24.1
Ease of useHow quickly someone non-technical gets value from it.
5.0
4.5
4.0
FeaturesHow completely it covers its own job, and how well the pieces fit together.
4.5
4.5
4.5
Output qualityHow good the results are before you fix them.
4.0
3.5
3.5
Value for moneyWhat you get for the price, including the free plan.
3.5
4.0
4.0
Speed & reliabilityHow fast it is and how often it falls over.
4.0
4.5
4.5

Feature comparison

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

AttributeDeepLGPTZeroOriginality.ai
Access & platform
Free plan Yes Yes Yes
Mobile app Yes No–
Desktop app Yes––
Browser extension Yes Yes Yes
API access Yes Yes Yes
Teams & business
Team workspace Yes Yes Yes
Enterprise plan or SSO Yes Yes Yes
Connects to other apps Yes Yes Yes
Open source or self-hosted No No No
AI abilities
Works with your files Yes Yes Yes
Understands images Yes––
Makes images No No No
Makes video No No No
Writes code No No No
Runs agents or automations No No No
Learns your brand or style Yes––
Works in many languages Yes Yes–
Capabilities score12/ 178/ 177/ 17

Pricing

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

AttributeDeepLGPTZeroOriginality.ai
Plans

Free

Free

Occasional emails and short text.

Free

$0

Checking the odd document.

Free

Free

Checking the odd article.

IndividualOur pick

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

One person translating most weeks.

PremiumOur pick

$23.99/mo, or $12.99/mo billed yearly

Teachers and editors checking work every week.

ProOur pick

$14.95/mo, or $12.95/mo billed yearly

Agencies and site owners checking content every week.

Team

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

Small teams sharing glossaries.

Professional

$45.99/mo, or $24.99/mo billed yearly

Agencies and heavy users scanning lots of files.

Enterprise

$179/mo, or $136.58/mo billed yearly

Publishers and large content teams.

Business

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

Teams translating all day.

Team

Professional price per seat, 2 seats minimum

Schools and businesses buying for a group.

Enterprise

Custom

Large organisations with security reviews.

Which plan to pickStart 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.Start on Free. If you check more than a few documents a week, Premium on yearly billing is the sweet spot. Professional only makes sense if you scan big batches of files.Pro is enough for most agencies and site owners. An AI and plagiarism check together uses two credits per 100 words, so budget about 100,000 words of checked content a month. Go Enterprise only if you need the API or very high volume.

Key features

AttributeDeepLGPTZeroOriginality.ai
Standout features
  • Text translation
  • Document translation
  • Glossaries and style rules
  • DeepL Write
  • DeepL Voice
  • Apps and API
  • AI detection
  • Plagiarism check
  • Writing replay
  • Citation and hallucination check
  • Batch scans
  • API and school integrations
  • AI detection
  • Plagiarism checker
  • Fact checker
  • Bulk and site scans
  • Writing replay
  • API

Pros and cons

AttributeDeepLGPTZeroOriginality.ai
Pros
  • 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
  • Clear sentence-level highlights, so you see exactly what looks AI-written
  • Generous free plan for occasional checks
  • Writing replay gives honest writers a way to prove their work
  • Flags made-up citations, which most detectors don't
  • API and batch scans for larger volumes
  • AI, plagiarism, facts and readability in one scan
  • Cheap for the volume on Pro
  • Bulk and whole-site scanning
  • Writing replay gives honest writers a way to prove their work
  • API for content teams
Cons
  • 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
  • False positives happen, and short or formal writing gets flagged more often
  • Edited or reworded AI text can get past it
  • The best scan and plagiarism checks need a paid plan
  • Mostly designed around schools, so some features won't matter to a business
  • False positives are a recurring complaint, and independent tests find more than the vendor claims
  • Monthly credits expire if you don't use them
  • API is only on the expensive Enterprise plan
  • A score can sour a client or writer relationship if treated as proof

Who each one is for

AttributeDeepLGPTZeroOriginality.ai
Best for
  • 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
  • Checking essays and assignments for AI writing
  • Screening freelance or agency content
  • Spotting made-up citations in reports
  • Showing you wrote a document yourself
  • Checking freelance and agency content
  • AI and plagiarism checks in one scan
  • Fact-checking articles before they go live
  • Bulk scanning a website
  • Proving a writer wrote their own draft
You'll find it used by
  • Exporters and importers
  • Customer support teams
  • Agencies
  • Translators
  • Legal and HR teams
  • Teachers
  • Editors
  • Content agencies
  • Recruiters
  • Students
  • Content agencies
  • Publishers
  • SEO teams
  • Marketing managers
  • Website buyers

Questions people ask

Which is better, DeepL, GPTZero or Originality.ai?

They tie on our overall rating (DeepL 4.2/5, GPTZero 4.2/5 and Originality.ai 4.1/5). DeepL is best for Translating Word, PowerPoint and PDF files with layout kept and customer emails in another language. GPTZero is best for checking essays and assignments for AI writing and screening freelance or agency content. Originality.ai is best for checking freelance and agency content and AI and plagiarism checks in one scan.

Which is cheaper, DeepL, GPTZero or Originality.ai?

DeepL: There's a free plan, and paid plans start at $10.49/mo. GPTZero: There's a free plan, and paid plans start at $0. Originality.ai: There's a free plan, and paid plans start at $14.95/mo.

Which is easier to use, DeepL, GPTZero or Originality.ai?

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.

Swap in another tool

More tools from Writing & Translation in the library.