Arena
arena.ai
Put one prompt to two anonymous models and vote for the better answer
No sign-up
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Chat models, image generators and AI workbenches you can open now.
arena.ai
Put one prompt to two anonymous models and vote for the better answer
chatgpt.com
The general assistant most people mean when they say they used AI
claude.ai
Anthropic's assistant, strongest on long documents and careful writing
deepseek.com
Open-weight reasoning model you can use free in a chat window
gemini.google.com
Google's assistant, wired into Search, Gmail, Drive and YouTube
aistudio.google.com
Prompt playground with model, temperature and system-prompt controls
huggingface.co
Thousands of runnable AI demos, no model installed on your machine
ideogram.ai
Image generator that renders readable text inside the picture
mistral.ai
Mistral's assistant — fast, EU-hosted and free to start with
copilot.microsoft.com
Web-grounded assistant that answers with numbered links you can open
notebooklm.google.com
Summarises only the sources you upload, and cites the exact passage
perplexity.ai
Answers a question by searching the web and footnoting every claim
chat.webllm.ai
Runs an open language model inside your browser, nothing sent to a server
Privacy
These process everything inside the browser. Load the page, disconnect from the network, and they still work.
chat.webllm.ai
Runs an open language model inside your browser, nothing sent to a server
By task
Questions
There is no single answer, which is why this page lists 13 of them with their limits stated. If you want to avoid signing up entirely, 3 of these work with no account at all.
1 of the 13 sites here process your file inside the browser and never upload it — they are marked "On device". The rest send your input to their server, which is fine for public material and worth thinking twice about for anything personal.
Nothing in this category has shut down so far. When something does, it moves to the Archive with a named successor rather than being deleted, so the answer to "what replaced it" survives.