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GPTZero

Detect whether text is AI or human written

★★★★☆ 3.7/5
FactScore™ 22.1
VS

R2 Copilot

R2 Copilot — The First-Ever Privacy-Conscious AI Assistant

★★★★★ 5.0/5
FactScore™ 63.9

Updated February 2026

GPTZero R2 Copilot
Rating 3.7★ 5.0★
Reviews 3 18
Pros 0 15
FactScore™ 22.1 63.9

FactScore™ Comparison

FactScore™ weighs both quality (rating) and popularity (reviews) for a fairer ranking than stars alone.

22.1
GPTZero FactScore™
👑
63.9
R2 Copilot FactScore™
★ R2 Copilot wins on FactScore™

Pros & Cons

Only in GPTZero — Pros

No unique pros listed

Both tools — Pros

—

Only in R2 Copilot — Pros

Fast performance Privacy features Security measures User-friendly interface Accurate responses Microsoft Office integration Complex query understanding Data control Data retention management Encryption End-to-end encryption Personalized recommendations Privacy policy Secure data handling Transparency

Only in GPTZero — Cons

—

Both tools — Cons

—

Only in R2 Copilot — Cons

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Details

GPTZero R2 Copilot
Categories Writing assistants, Chrome Extensions, AI Content Detection Writing assistants, Prompt Engineering Tools
Platforms Web Web
Became Popular January 6, 2023 January 30, 2024
Website gptzero.me r2copilot.ai

Who Should Pick Which?

Choose GPTZero if...

  • No unique pros listed

Choose R2 Copilot if...

  • Fast performance
  • Privacy features
  • Security measures

With a FactScore™ of 22.1 vs 63.9, R2 Copilot leads in community reception. GPTZero uniquely offers No unique pros listed, while R2 Copilot stands out for Fast performance and Privacy features.

3

What Users Say

GPTZero

A
Alex May 19, 2023
★★★★★

GPTZero is upfront about how people should interpret its results and how it works, which is something I appreciate :)

L
liz May 1, 2023
★☆☆☆☆

This is the worst piece of software I have ever come across. This is coming from a Lead Software Developer with a degree in Computer Science working as a programmer for over 25 years. I have been h...

R2 Copilot

E
Evgen Jan 30, 2024
★★★★★

With data breaches and privacy concerns on the rise, finding a trustworthy AI assistant has become a challenge. R2 Copilot has proven to be the best private GPT I've tried, offering the dual benefi...

А
Андрей Jan 30, 2024
★★★★★

R2 Copilot is a true miracle of technology! This tool has made my daily work much easier and helped me save a lot of time. The user interface is intuitive, allowing you to quickly get started witho...

Frequently Asked Questions

Which is better, GPTZero or R2 Copilot?

Based on FactScore™, R2 Copilot leads with a score of 63.9 vs 22.1. R2 Copilot has a higher rating of 5.0★ compared to 3.7★.

What are the pros of GPTZero compared to R2 Copilot?

GPTZero uniquely offers: No unique pros listed.

What are the pros of R2 Copilot compared to GPTZero?

R2 Copilot uniquely offers: Fast performance, Privacy features, Security measures, User-friendly interface, Accurate responses.

Is GPTZero better rated than R2 Copilot?

GPTZero is rated 3.7★ from 3 reviews. R2 Copilot is rated 5.0★ from 18 reviews.

What is the FactScore™ of GPTZero and R2 Copilot?

FactScore™ weighs rating and review volume together. GPTZero scores 22.1 and R2 Copilot scores 63.9.

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