Yes, but only if the tool keeps the disagreement visible. Scored on five criteria from Daniel Kahneman's Thinking, Fast and Slow, Cuey (free Chrome extension, launched on Product Hunt September 28, 2026, 30+ models) scores 19/25, ChatHub (Pro $19 a month, six models at once) 18/25, and Perplexity's Model Council (Pro $20 a month, 2 to 8 models, one synthesized verdict) 16/25, because synthesis manufactures the coherence Kahneman warns against.
For about a year my second-opinion routine was manual: paste the same pricing question into three tabs, read three answers, and notice, with mild embarrassment, how much calmer I felt when they agreed. That calm is the subject of this page, because it is the thing the new tools sell and the thing Daniel Kahneman spent a career warning about.
The tools first, checked this week. Cuey, from Llama Valley Inc, launched on Product Hunt on September 28, 2026 and took 255 upvotes that day. It is a free Chrome extension with no account required that sits as a sidebar inside ChatGPT, Claude, Gemini, Grok or DeepSeek, sends your prompt to other models, and shows what they agree on, disagree on and what your model missed, cross-checking against 30-plus models under a daily free limit; a paid tier exists but the price is not published. ChatHub is the established version of the same idea: one prompt to up to six chatbots in one window, no API keys, free to start, Pro at $19 a month with 1,500 advanced-model queries, Unlimited at $39, on web, Chrome, iOS, Android and desktop, with a one-click summary of the answers on paid plans. Perplexity's Model Council launched in February 2026 and, since July 29, 2026, lets Pro subscribers at $20 a month and Max subscribers at $200 pick 2 to 8 models that run in parallel behind a wait barrier, after which a "chair" model writes one synthesis that flags where the models agree and split; Perplexity's Computer credits run 100 to the dollar, with light tasks at 100 to 350 credits and heavy ones up to 2,275, so a serious council session can cost more than $20 on its own.
Now the criteria, all from Thinking, Fast and Slow. Kahneman's rule for any group judgment is independence: get each opinion before anyone hears the others, because the first voice anchors the rest. His deeper warning is WYSIATI, what you see is all there is: System 1 builds the most coherent story from whatever is in front of it and never asks what is missing, and "the confidence people have in their beliefs depends mostly on the quality of the story they can tell." Cognitive ease is the mechanism: familiar, fluent, repeated statements feel true, and three fluent paragraphs saying the same thing are repetition wearing a lab coat. Against that, cognitive strain, having to work through raw, conflicting material, is what wakes System 2 up. Finally, the outside view: a judgment improves when you inject base rates and your own data rather than reasoning from the inside of the story. Those give me five rows.
| Kahneman criterion (1-5) | Cuey | ChatHub | Model Council |
|---|---|---|---|
| Independence: models answer without seeing each other | 3 | 3 | 4 |
| Disagreement stays visible, not smoothed away | 5 | 4 | 4 |
| Cognitive strain preserved: you read raw outputs | 4 | 5 | 2 |
| Outside view: you can inject base rates and your data | 2 | 3 | 4 |
| Cost per decision | 5 | 3 | 2 |
| Total out of 25 | 19 | 18 | 16 |
The independence row deserves the caveat that no tool can fix. All three run the models in parallel, so none of them leaks one answer into another. But GPT-6, Claude Opus 5.5 and Gemini were trained on largely the same internet, and when they agree on a strategy question it is often the same conventional wisdom arriving by three routes. Kahneman's independence is about independent evidence, and three models are closer to three newspapers quoting one wire service. That is why nobody scores a 5 there, and why Model Council, whose council can include open-weight models from GLM and Kimi, edges the others.
The row that decides the ranking is strain. Cuey and ChatHub make you read the disagreement; Cuey's sidebar leads with the divergences, which is the single most useful design decision in this category, and ChatHub shows six raw columns. Model Council hands you one coherent synthesis that flags the splits in passing, and a coherent synthesis is precisely the WYSIATI product: the chair model has resolved the tension for you, fluently, and your System 2 goes back to sleep. It is the best tool of the three for research, where you want a finished document, and the worst for a decision, where the disagreement was the point.
What I actually do is narrower than any of the tools want. Before I compare, I write my own answer and the base rate I believe, so the models cannot anchor me. Then I run the question through Cuey inside Claude, read only the disagreement panel, and for each split I ask which model is reasoning from a fact I gave it versus a story it built. If all three agree, I do not relax; I ask one of them to argue the opposite, because agreement among correlated sources is weak evidence dressed as strong.
Limits, honestly. These scores are mine after roughly a week with Cuey, longer with the other two, and Cuey is nine days old with an unpublished paid tier and a daily cap I hit on heavy days. ChatHub's summary button quietly turns it into a synthesis tool if you let it. Model Council's cost is hard to predict because credits track task complexity, not model count. And the honest failure mode of the whole category is the one I started with: the tools are marketed as confidence machines, and confidence, Kahneman says, is a feeling, not a judgment.
Sources: Cuey, Chrome Web Store listing, "Compare ChatGPT, Claude, Gemini, Grok & DeepSeek answers side by side," checked September 30, 2026 (chromewebstore.google.com); StartupCorners, "Top Product Launches: September 28, 2026," Cuey at 255 upvotes (startupcorners.com); AI Crucible, "Best Multi-Model AI Tools in 2026," ChatHub and Perplexity pricing verified September 27, 2026 (ai-crucible.com); Lumien AI, "Perplexity Model Council Expands: Pick 2-8 AI Models for One Answer," July 29, 2026 (lumienai.com); Daniel Kahneman, Thinking, Fast and Slow (2011), chapters on WYSIATI, cognitive ease and the outside view.
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