5i sends your question to GPT-4o, Claude, Gemini, Grok, and Mistral simultaneously, then synthesizes all five responses into a single weighted verdict. When models agree, you have signal. When they disagree, you have the shape of the disagreement.
Open 5i All Tools5i runs your prompt against the five dominant AI providers in parallel. You get every response in full, plus a synthesis that weighs them into a single verdict. No context-switching, no copying between tabs, no picking a model and hoping it's the right one.
Most people pick one AI and hope it's right. 5i treats model disagreement as data — the shape of the disagreement tells you something the individual answers don't.
Type once. 5i fires it to all five providers simultaneously — one API call per model, all in parallel.
Each model answers in full. Read every response individually or skip straight to the synthesis.
A synthesis pass weighs all five answers into a single conclusion — surfacing consensus and mapping disagreements.
One AI can be confidently wrong. Five AIs disagreeing tells you the question is harder than it looks. Five AIs agreeing gives you something closer to ground truth.
5i is used for high-stakes research, investment thesis validation, legal analysis, technical architecture decisions, and any prompt where a single model's blind spots could cost you. If the answer matters, run it through all five.