ChatAll is a free desktop app that lets you chat with many AI bots at the same time and compare their answers side by side. Instead of opening ChatGPT, Claude, Gemini and a dozen other services one by one, you send a single prompt to all of them concurrently and immediately see which bot gives the best answer. It supports dozens of bots, including ChatGPT, Bing Chat, Claude, Gemini, ChatGLM and major Chinese models, plus local models. ChatAll has more than 16,000 stars on GitHub and is actively maintained in 2026.
Different models excel at different tasks, and their answers vary in quality from prompt to prompt. ChatAll turns that fragmentation into an advantage: write once, get parallel answers from every bot you have enabled, and pick or merge the best result. The app runs on Windows, macOS and Linux via Electron, keeps your conversations in one place, and remembers settings per bot. It is popular with power users who want the best possible answer, researchers who compare model strengths and weaknesses intuitively, and developers who debug prompts across providers quickly without maintaining a pile of browser tabs and API scripts.
ChatAll is completely free and open source under the Apache-2.0 license. You sign in with your own accounts for the bots you use, so any costs belong to those services, not to ChatAll.
ChatAll is for LLM power users, researchers and developers who regularly use several chatbots and want the best answer from each prompt, without the friction of trying every service separately.