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Side-by-side comparison · Writing & Translation

GPTZero vs Originality.ai vs Rytr

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

Best overall

GPTZero

4.2

From $0

Originality.ai

4.1

From $14.95/mo

Rytr

3.8

From $0

Comparing 3 tools, the maximum.

At a glance

Best overall

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.

Rytr3.8

Pick it if: Solo founders and small businesses on a tight budget who want quick emails and posts, and help keeping on top of follow-ups.

Overview

AttributeGPTZeroOriginality.aiRytr
In one lineChecks 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.Cheap AI writer for emails and posts, now with an assistant that tracks your follow-ups.
Pricing modelFreemiumFreemiumFreemium
Starting price$0$14.95/mo$0
Free plan Yes Yes Yes
Works with Claude Code Yes Yes No

Rating breakdown

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

AttributeGPTZeroOriginality.aiRytr
Overall rating4.2Winner4.13.8
Ease of useHow quickly someone non-technical gets value from it.
4.5
4.0
4.5
FeaturesHow completely it covers its own job, and how well the pieces fit together.
4.5
4.5
3.5
Output qualityHow good the results are before you fix them.
3.5
3.5
3.0
Value for moneyWhat you get for the price, including the free plan.
4.0
4.0
4.0
Speed & reliabilityHow fast it is and how often it falls over.
4.5
4.5
4.0

Feature comparison

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

AttributeGPTZeroOriginality.aiRytr
Access & platform
Free plan Yes Yes Yes
Mobile app No– No
Desktop app–––
Browser extension Yes Yes Yes
API access Yes Yes No
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–
Understands images–––
Makes images No No No
Makes video No No No
Writes code No No No
Runs agents or automations No No Yes
Learns your brand or style–– Yes
Works in many languages Yes– Yes
Capabilities score8/ 177/ 178/ 17

Pricing

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

AttributeGPTZeroOriginality.aiRytr
Plans

Free

$0

Checking the odd document.

Free

Free

Checking the odd article.

Free

$0

Trying the writer.

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.

LiteOur pick

$9/mo

People who just want the writer.

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.

Personal

$19/mo

Using the follow-up assistant day to day.

Team

Professional price per seat, 2 seats minimum

Schools and businesses buying for a group.

Pro

$49/mo

People managing lots of clients.

Which plan to pickStart 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.If you only want the writer, Lite at $9 a month is the one. Pick Personal or Pro only if the follow-up assistant earns its keep. Yearly billing saves 20%.

Key features

AttributeGPTZeroOriginality.aiRytr
Standout features
  • 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
  • 40 writing use cases
  • Your voice or 22 tones
  • Browser extension
  • Daily briefs
  • Meeting prep and follow-ups

Pros and cons

AttributeGPTZeroOriginality.aiRytr
Pros
  • 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
  • Unlimited writing for $9 a month
  • Very easy: pick a use case, tone and go
  • Works in 30+ languages
  • Follow-up assistant is handy for client work
  • Nothing sends without your approval
Cons
  • 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
  • Copy can read generic next to Claude or ChatGPT
  • Template-style writing feels dated
  • The Engage assistant is new and unproven
  • The assistant needs access to your email and calendar

Who each one is for

AttributeGPTZeroOriginality.aiRytr
Best for
  • 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
  • Quick emails and social posts on a budget
  • Writing in your own voice or a set tone
  • Remembering who you owe a reply
  • Drafting follow-ups after meetings
You'll find it used by
  • Teachers
  • Editors
  • Content agencies
  • Recruiters
  • Students
  • Content agencies
  • Publishers
  • SEO teams
  • Marketing managers
  • Website buyers
  • Solo founders
  • Freelancers
  • Small businesses
  • Sales reps
  • Consultants

Questions people ask

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

GPTZero scores highest overall in our ratings (GPTZero 4.2/5, Originality.ai 4.1/5 and Rytr 3.8/5). 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. Rytr is best for quick emails and social posts on a budget and writing in your own voice or a set tone.

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

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. Rytr: 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.

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