G2 Vendor Directory

GPTZero

#2 in Plagiarism Checker

N/A

1

Products on G2

101

Total reviews

4.3

Avg. star rating

  • GPTZero ranks #2 in Plagiarism Checker.
  • Reviews across GPTZero's portfolio declined 100.0% quarter-over-quarter.
  • GPTZero's 1 product span 2 categories on G2.
  • Small Business is the largest segment among reviewers, at 55.4%.

Traffic & LLM citations

Monthly G2.com page views and citations by AI answer engines, summed across GPTZero's products.

Page views and citations · GPTZero

Source: G2 review data

Winning from

Based on reviewers who said they switched from another vendor's product.

1

QuillBot

2 switched
2

Originality.AI

1 switched
3

Copyleaks

1 switched
4

OpenAI

1 switched
5

Content At Scale

1 switched

Losing to

Based on reviewers of other products who said they switched from GPTZero.

1

ZeroGPT

3 switched
2

Website Learners

1 switched
3

Noplag

1 switched

Key stats

-100.0%

#2

2

Small Business

127

N/A

Adoption by company size

SegmentShare of reviews
Small Business55.4%
Mid-Market34.7%
Enterprise9.9%

Quarterly history

QuarterTotal reviewsAvg. rating
2024 Q415.0
2025 Q410.5
2026 Q115.0
2026 Q225.0