Skip to content

Side-by-side comparison · Writing & Translation

Copyleaks vs GPTZero vs Lara Translate

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

GPTZero

4.2

From $0

Lara Translate

4.2

From $0

Comparing 3 tools, the maximum.

At a glance

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

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

Best value

Pick it if: Businesses that translate marketing copy, documents or customer messages and want more control over tone and terms.

Overview

AttributeCopyleaksGPTZeroLara Translate
In one lineChecks text for AI writing and plagiarism in one scan, in over 30 languages.Checks whether text was written by AI, with plagiarism and citation checks too.Translates text and documents in context, explains its choices and matches your tone.
Pricing modelFreemiumFreemiumFreemium
Starting price$0$0$0
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.

AttributeCopyleaksGPTZeroLara Translate
Overall rating3.94.24.2
Ease of useHow quickly someone non-technical gets value from it.
4.0
4.5
4.5
FeaturesHow completely it covers its own job, and how well the pieces fit together.
4.5
4.5
4.0
Output qualityHow good the results are before you fix them.
3.5
3.5
4.0
Value for moneyWhat you get for the price, including the free plan.
3.5
4.0
4.5
Speed & reliabilityHow fast it is and how often it falls over.
4.0
4.5
4.0

Feature comparison

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

AttributeCopyleaksGPTZeroLara Translate
Access & platform
Free plan Yes Yes Yes
Mobile app No No Yes
Desktop app–––
Browser extension 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 Yes No No
AI abilities
Works with your files Yes Yes Yes
Understands images Yes– 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 Yes
Capabilities score10/ 178/ 1710/ 17

Pricing

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

AttributeCopyleaksGPTZeroLara Translate
Plans

Free

$0

Quick one-off checks.

Free

$0

Checking the odd document.

Free

$0

Trying it on a few documents.

PersonalOur pick

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

Individuals checking work regularly.

PremiumOur pick

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

Teachers and editors checking work every week.

ProOur pick

$9.99/mo billed yearly

Individuals translating every week.

Pro

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

Teams and agencies.

Professional

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

Agencies and heavy users scanning lots of files.

Team

From $29.99/mo billed yearly

Small teams sharing a quota.

Enterprise and Education

Custom

Companies and schools at scale.

Team

Professional price per seat, 2 seats minimum

Schools and businesses buying for a group.

Enterprise

Custom

Large organisations.

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 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.Start on Free. Pro is cheap and covers about 250 pages a month, enough for most individuals. Take Team once more than one person translates, because users are free and you only pay for the shared quota.

Key features

AttributeCopyleaksGPTZeroLara Translate
Standout features
  • AI and plagiarism in one report
  • Many languages
  • AI image detection
  • Website scans
  • Works where you are
  • API and school integrations
  • AI detection
  • Plagiarism check
  • Writing replay
  • Citation and hallucination check
  • Batch scans
  • API and school integrations
  • Context-aware translation
  • Explains its choices
  • Documents with formatting
  • Voice interpreter
  • Glossaries and memory
  • API and MCP

Pros and cons

AttributeCopyleaksGPTZeroLara Translate
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
  • 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
  • Takes context and tone into account
  • Explains why it translated something a certain way
  • Keeps document formatting, even on scanned PDFs
  • Team pricing by usage, with unlimited users
  • Generous free plan with API access
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
  • 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
  • Fewer languages than Google Translate
  • Newer name, with fewer app connections than DeepL
  • Free characters run out quickly on long documents
  • Prices on the website are yearly; monthly costs more

Who each one is for

AttributeCopyleaksGPTZeroLara Translate
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
  • Checking essays and assignments for AI writing
  • Screening freelance or agency content
  • Spotting made-up citations in reports
  • Showing you wrote a document yourself
  • Translating documents with formatting kept
  • Marketing copy that needs the right tone
  • Checking why a translation reads the way it does
  • Teams sharing a glossary of brand terms
You'll find it used by
  • Schools and universities
  • Publishers
  • Content agencies
  • Compliance teams
  • Students
  • Teachers
  • Editors
  • Content agencies
  • Recruiters
  • Students
  • Marketing teams
  • Online stores
  • Agencies
  • Customer support teams
  • Freelance translators

Questions people ask

Which is better, Copyleaks, GPTZero or Lara Translate?

They tie on our overall rating (Copyleaks 3.9/5, GPTZero 4.2/5 and Lara Translate 4.2/5). Copyleaks is best for AI and plagiarism checks in one report and checking content in languages other than English. GPTZero is best for checking essays and assignments for AI writing and screening freelance or agency content. Lara Translate is best for translating documents with formatting kept and marketing copy that needs the right tone.

Which is cheaper, Copyleaks, GPTZero or Lara Translate?

Copyleaks: There's a free plan, and paid plans start at $0. GPTZero: There's a free plan, and paid plans start at $0. Lara Translate: There's a free plan, and paid plans start at $0.

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.