OpenAI's all-round assistant for writing, analysis, images and voice.
Best for: Anyone who wants one assistant for everyday writing, research and brainstorming.
Why pick it: Handles a very wide range of tasks; Apps on most devices.
Updated 2026
Google Gemini: Google's assistant, connected to Search, Gmail, Docs and Android. 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.
OpenAI's all-round assistant for writing, analysis, images and voice.
Best for: Anyone who wants one assistant for everyday writing, research and brainstorming.
Why pick it: Handles a very wide range of tasks; Apps on most devices.
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.
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.
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.
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 assistant inside WhatsApp, Instagram, Messenger and the web.
Best for: People who want quick answers inside the messaging apps they already use.
Why pick it: Completely free; Works inside apps many people already use.
xAI's assistant with real-time access to posts on X.
Best for: People who follow news and trends on X.
Why pick it: Real-time access to X content; Relaxed, conversational style.
Our top pick is ChatGPT: OpenAI's all-round assistant for writing, analysis, images and voice. Claude and Microsoft Copilot are close behind.
Yes. ChatGPT, Claude, 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 Google Gemini lacks, a different platform or simply a style of results they prefer. A common reason: best features need a Google paid plan.
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.