Anthropic's assistant known for careful writing, long documents and coding.
Best for: Writers, analysts and developers who work with long or detailed material.
Why pick it: Strong at long, careful writing; Handles very large documents.
Updated 2026
ChatGPT: OpenAI's all-round assistant for writing, analysis, images and voice. If it is not quite right for you, these tools do a similar job, ranked by our editors, and 11 of them can be used for free.
Most similar first. Each entry says what it is best for and how it compares.
Anthropic's assistant known for careful writing, long documents and coding.
Best for: Writers, analysts and developers who work with long or detailed material.
Why pick it: Strong at long, careful writing; Handles very large documents.
Google's assistant, connected to Search, Gmail, Docs and Android.
Best for: People who already live in Google's apps and want an assistant inside them.
Why pick it: Deep link with Google apps; Free to start.
Microsoft's free assistant on the web, Windows and Edge.
Best for: Windows users who want a free assistant without installing anything.
Why pick it: Free to use; Built into Windows and Edge.
Alibaba's free assistant for chat, coding, image creation and document questions.
Best for: Anyone who wants a capable free chatbot with a choice of models.
Why pick it: Generous free use; Strong at coding and maths.
A self-hosted, open-source chat interface for local and cloud AI models.
Best for: Technical teams who want their own private chatbot portal.
Why pick it: Free and open source; Highly customisable.
Moonshot AI's assistant that handles long documents, research and coding tasks.
Best for: Students and researchers who work with long documents.
Why pick it: Handles very long inputs well; Useful free tier.
A free chatbot built on Zhipu's GLM models, good at coding and building web pages.
Best for: Developers and tinkerers who want to try a strong open-weight model family for free.
Why pick it: Free to use; Models are also released with open weights.
A polished chat front end that works with your own API keys for many AI models.
Best for: Power users who want one interface for many models and pay per use.
Why pick it: Works with many providers; Can be cheaper than several subscriptions.
A free chat interface for open-source AI models.
Best for: People who prefer open models and transparency.
Why pick it: Free and open source; Wide choice of open models.
An open-source desktop app for running AI chat models fully offline on your computer.
Best for: People who want a private, offline ChatGPT-style app.
Why pick it: Free and open source; Keeps data on your device.
DuckDuckGo's private way to chat with popular AI models without an account.
Best for: Privacy-minded people who want quick AI answers.
Why pick it: Strong privacy focus; Free and simple.
A privacy-first AI assistant built into the Brave browser that can read the page you are on.
Best for: Brave users who want quick help with whatever they are reading.
Why pick it: Built into the browser; Privacy-focused design.
Our top pick is Claude: Anthropic's assistant known for careful writing, long documents and coding. Google Gemini and Microsoft Copilot are close behind.
Yes. Claude, Google Gemini, Microsoft Copilot, Qwen Chat can be used without paying, on a free plan or as open source. Free limits change often, so check each site.
People usually switch for price, a feature ChatGPT lacks, a different platform or simply a style of results they prefer. A common reason: can state wrong facts confidently.
We list tools that do a similar job, most similar first, and rank them by our editorial score for usefulness, maturity and free-plan value. No listing is paid for.