The single most useful AI trick in 2026 is asking several models the same question at once. Models that look identical on benchmarks give visibly different answers on real prompts — and CoreAI's Compare feature puts those answers side by side so the best one is obvious.
Why One Model Is Never Enough
Strengths differ by task. The model that writes your best emails is rarely the one that debugs your code best. Public leaderboards measure averages across tasks; your work isn't average.
Styles differ by model. Claude tends toward thorough and careful, Grok toward blunt, Gemini toward structured. For writing tasks especially, style fit matters as much as raw quality.
Disagreement is information. When two strong models give the same answer, it's probably right. When they disagree, you just learned the question is harder than it looked — verify before acting. This is the cheapest fact-checking method that exists.
How Compare Works in CoreAI
- Open Compare in the app or web app.
- Pick two or more models — say GPT-5, Claude, and DeepSeek.
- Send one prompt; responses stream in side by side.
- Keep the best answer, or continue the conversation with the winning model.
Beyond Compare: Mixed-Model Conversations
CoreAI chats aren't locked to one model — you can switch models mid-conversation and the new model picks up the full context. Draft with a fast free model, then hand the hard part to a reasoning model, all in one thread.
Popular Head-to-Heads
Start with the match-ups people ask about most: GPT-5 vs Claude, Claude vs Gemini, GPT-5 vs DeepSeek, and Kimi vs DeepSeek.