Alternatives to Winston AI

An online AI content detector and plagiarism checker for text from ChatGPT, Claude, Gemini and other models. The listings below can replace it for an important use case. Each note says what changes if you switch.

  • Winston AI

    An online AI content detector and plagiarism checker for text from ChatGPT, Claude, Gemini and other models.

    FreemiumProprietaryWeb

Replacements

Listings that take over the same core job as Winston AI.

  • GPTZero

    An AI content detector that estimates whether text was written by ChatGPT, Claude, Gemini or other models.

    FreemiumProprietaryWebBrowser extension

    GPTZero adds sentence-level highlighting, writing replay in Google Docs and a Chrome extension across Gmail, Docs and Classroom, with advanced features on a paid plan.

  • Originality.ai

    An AI text detector and plagiarism checker for publishers and content teams, with browser extensions.

    FreemiumProprietaryWebBrowser extension

    Originality.ai adds readability and fact checks, Chrome and Firefox extensions and an API for bulk checks, but its free tier is limited to three scans a day.

  • Copyleaks

    A plagiarism checker and AI content detector for text, code and other media.

    PaidProprietaryWeb

    Copyleaks is a paid service that also checks source code, video, audio and images for plagiarism, aimed mainly at institutions and businesses.

  • Quetext

    A web plagiarism checker and AI detector with grammar, summarizing and citation tools.

    FreemiumProprietaryWebBrowser extension

    Quetext pairs plagiarism and AI detection with a citation generator, grammar checker, Chrome extension and REST API.

  • ZeroGPT

    A web tool that estimates whether text was written by AI, with extra writing utilities.

    FreeProprietaryWeb

    ZeroGPT is free and runs in the browser, also checking images and video for AI generation, but it does not list plagiarism checking.

  • Smodin

    An online AI writing toolkit with an AI detector, humanizer, plagiarism checker and rewriting tools.

    FreemiumProprietaryWeb

    Smodin bundles an AI detector with plagiarism checks, a humanizer and rewriting tools, accepts Word and PDF uploads and can be tried without an account.

Similar software

Related functionality, not a direct replacement.

  • Grammarly

    An AI writing assistant that checks grammar and spelling and suggests rewrites and tone changes.

    FreemiumProprietaryWebBrowser extension

  • Paperpal

    An AI academic writing tool with grammar checks, citations, paraphrasing and journal submission checks.

    FreemiumProprietaryWeb

  • Trinka

    An AI grammar checker and writing assistant aimed at academic and technical writing.

    FreemiumProprietaryWeb

  • Readable

    An online readability checker that scores text with many readability formulas and highlights passages to fix.

    FreemiumProprietaryWeb