Unisyn

People who want to use multiple AI models today have to pay for and switch between separate tools, such as ChatGPT Plus for GPT-4o only or Claude Pro for Claude only, or use a marketplace like Poe that keeps bots isolated from each other. This makes it hard to compare how different models answer the same question, to combine their strengths on one task, or to work with documents across several AIs at once. Students, founders, developers, writers and researchers who want multi-perspective answers, document analysis, or live web-informed responses currently need separate subscriptions and tools to get partial versions of this.

Unisyn AI is a multi-model chat platform that brings GPT-4, GPT-4o, Claude, Grok, Gemini, DeepSeek, Mistral and other models into one collaborative workspace. Users can query up to 4 models in parallel on a single prompt, let Unisyn automatically route a prompt to the best-fit model, or run a group chat where multiple AIs build on each other's answers in one thread. The platform supports uploading PDFs, notes, research papers and images directly into a conversation so any supported model can read and answer questions about that content, includes integrated web search for answers beyond model training cutoffs, and offers an AI Canvas for collaboratively building web pages. Conversations and responses can be shared via permanent public URLs.