Skip to main content

GPTZero vs DetectGPT

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

GPTZero compared with DetectGPT
DetailGPTZero logo GPTZeroDetectGPT logo DetectGPT
What it doesAI detector that identifies content generated by large language models Free AI checker to detect AI-generated text from ChatGPT, Claude, Grok, Gemini and other language models
StageNot given Not given
Founded2023 Not given
Based inNot given Not given
Pricing modelFreemium Free
PricingFree tier for basic AI detection up to 10,000 characters. Professional plan available with pricing details on subscription page. API pricing available for developers. Free. No account, no card required. Up to 5,000 words per run for AI detection and up to 3,000 words for plagiarism checking.
Key features
  • AI detection with 99.9% accuracy
  • Sentence-by-sentence highlighting of AI-generated text
  • Writing Replay showing video proof of writing process
  • Plagiarism detection
  • Grammar checking and writing feedback
  • Chrome extension for browser-based scanning
  • Integration with Canvas and Google Classroom
  • API for developer integration
  • Detects multiple AI models including GPT-5, GPT-6, Gemini, and Claude
  • AI Tutor for writing improvement
  • Analyzes up to 5,000 words per run without account signup
  • Detects AI writing from ChatGPT, Claude, Grok, Gemini and other LLMs
  • Analyzes public URLs and homepages
  • Plagiarism checker with public web overlap detection up to 3,000 words
What makes it different
  • 99.9% accuracy rate verified by independent benchmarks from Penn State's AI Research Lab
  • De-biased for ESL learners with only 1% false positive rate for non-native English writing
  • Only detector with Writing Replay showing video proof of authentic writing process
  • Trusted by over 10 million users and 100+ organizations globally
  • Independent tool not affiliated with Turnitin, OpenAI or other major platforms
  • Text scored in browser with no storage on servers
  • Integrated plagiarism checker included as free feature
Community votes00
DR (Domain Rating by Ahrefs)81 no change since last check39 no change since last check
Trust Flow (Majestic)2713
Citation Flow (Majestic)4326
Referring domains (Majestic)838735

5 details filled in for both companies.

More alternatives to GPTZero More alternatives to DetectGPT

Help centre