Best GPTZero Alternatives in 2026
GPTZero — AI content detector that scans text for ChatGPT, GPT-6, and Gemini-generated writing, plus plagiarism and writing-process checks. If it does not fit your workflow, budget, or platform, these 15 tools cover similar use cases in ai content detector, ai education tools, ai browser extensions. They are ranked by how closely their categories overlap with GPTZero.
GPTZero alternatives compared
| Tool | What it does | Pricing | Platforms |
|---|---|---|---|
| GPTZero (original) | AI content detector that scans text for ChatGPT, GPT-6, and Gemini-generated writing, plus plagiarism and writing-process checks. | Freemium | Web, Browser Extension |
| Copyleaks | AI-powered content authenticity detection for plagiarism, AI-generated text, and deepfakes. | Paid | Web, Browser Extension |
| Originality.ai | Accurate AI content detection and plagiarism checking to verify if text was written by ChatGPT, Gemini, Claude, or a human. | Freemium | Web, Browser Extension |
| HARPA AI | A Chrome extension that brings GPT, Claude, Gemini, Perplexity and more into every web page to automate research, writing and email. | Freemium | Browser Extension |
| Monica | An all-in-one AI assistant bringing GPT, Claude, and Gemini models to chat, search, writing, image and video creation in one browser extension and app. | Freemium | Web, iOS, Android, Desktop, Browser Extension |
| Khanmigo | Khan Academy's AI teaching assistant and tutor that guides students to answers instead of just giving them. | Freemium | Web |
| Undetectable AI | Detect AI-generated text and images, then humanize AI writing to read naturally and pass AI detectors. | Freemium | Web, Browser Extension |
| NotebookLM | Turn your own documents into an AI research partner that summarizes, explains, and generates study material from your sources. | Freemium | Web |
| scite | AI research assistant that grounds every answer in 300M+ scholarly articles with Smart Citations. | Freemium | Web, Browser Extension |
| Consensus | AI-powered academic search engine that finds and synthesizes answers from peer-reviewed research papers | Freemium | Web, iOS, Android |
| NaturalReader | AI-powered text-to-speech that turns PDFs, documents, and webpages into natural-sounding audio for study, work, and accessibility. | Freemium | Web, iOS, Android, Desktop, Browser Extension |
| Resemble AI | Enterprise-grade deepfake detection and watermarking that verifies audio, video, and images in real time. | Paid | Web, Browser Extension |
| Grammarly | AI writing assistant that fixes grammar, adjusts tone, and rewrites text across nearly any app or website | Freemium | Web, Desktop, Browser Extension |
| Colossyan | AI video and course generator that turns documents, decks, or prompts into training videos with lifelike avatars in minutes. | Freemium | Web |
| ReplayChess | Play the critical position from famous chess games against a friend, a rated opponent or Stockfish | Freemium | Web |
| Funboxie Coloring Pages | Free printable coloring pages and learning worksheets for kids—easy, at-home printables for parents and teachers. | Free | Web |
