Can you use multiple AIs at the same time?
Yes: open multiple tabs, use an aggregator platform like Ask Aurel (Compare mode) that sends the same question to several models in parallel, or orchestrate API calls via code. Total cost is the sum of the requests made, with no multiple-subscription overhead on pay-as-you-go.
Yes, it's entirely possible to use multiple AIs at the same time, and several methods exist depending on your profile and budget.
(1) Multiple tabs: open ChatGPT, Claude.ai, Gemini, and Mistral Le Chat simultaneously in separate tabs, then paste the same question into each — a free method, but tedious once the number of questions grows.
(2) Consumer aggregator platforms: tools like Ask Aurel, Poe (Quora), or ChatHub bundle several AIs into a single interface and allow the same request to be sent in parallel. Ask Aurel offers a "Compare mode" that sends a question to 2, 3, or more models at once and displays the answers side by side — particularly useful for important decisions (drafting a contract, a strategic choice) where cross-checking several opinions reduces the risk of error or hallucination from a single model.
(3) Developer access via API: for technical users, orchestrating parallel API calls with code (Python, Node.js) and libraries like LangChain or LiteLLM makes it possible to automate comparisons or processing chains that combine several models depending on the task.
(4) Cost: using several AIs in parallel doesn't mechanically double your bill if you're on pay-as-you-go — total cost is simply the sum of calls made to each model, with no multiple-subscription overhead, unlike stacking ChatGPT Plus, Claude Pro, and Gemini Advanced (about $65/month for all three). For occasional to moderate use, a pay-as-you-go platform like Ask Aurel remains the simplest way to compare several AIs without committing to multiple parallel subscriptions.