Cuey

Cuey is a Chrome extension that compares any AI answer against more than 30 models — including ChatGPT, Claude, Gemini, Grok and DeepSeek — and shows what those models agree on, what they disagree on, and what your model missed. It runs inside the AI tool you already use and displays results side by side in a clean sidebar instead of a separate application. Cuey is aimed at people who use AI for everyday work and want a second opinion before acting on a single model's output. Its stated purpose is to catch a confident-sounding wrong answer before it burns you, without copy-pasting between tabs or repeating yourself. AI gives you wrong answers in the same confident tone as right ones, which makes it hard to tell a reliable response from a plausible-sounding mistake. Cuey's own framing of the problem is that different models have different strengths: one may reason through a problem better, another may write stronger ad copy, and another may have real-time internet access. Because those differences exist, a single answer is only one model's perspective. When models agree, you can move forward with more confidence; when they do not, you know to look closer. Cuey exists so that this check happens without the manual work of opening tabs, pasting prompts and re-reading several answers yourself. The core of Cuey is cross-checking. You can cross-check an answer against 30+ models with a daily free limit, and Cuey works inside all seven major AI model providers it names. Rather than asking you to trust a single response, it puts responses next to each other so divergence is visible. Where models diverge, Cuey surfaces that disagreement and, per its own description, shows why it matters. This makes the differences between models something you can inspect directly instead of something you have to guess at. Side-by-side model comparison is free, and no account is required to start. Cuey also lets you send one prompt to multiple models at once. Instead of retyping the same question into ChatGPT, then Claude, then Gemini, you enter the prompt in your AI tool and let Cuey run it across your selected models. Results appear in Cuey's sidebar, which you open from the sidebar icon, so you can see where the models agree and disagree without leaving your current page. The extension is designed to work directly inside your AI tool, so there is no separate app to learn — a deliberate choice to keep the comparison step inside the workflow you already have, rather than turning it into a separate research task with its own interface and its own learning curve. A second capability is carrying memory across AI tools. Cuey lets you import your chat history and memories from ChatGPT, Claude and Gemini, then carry that context, along with your preferences and history, across supported models. The problem it addresses is that your history should not be trapped inside one AI tool: without this, switching models means starting from zero. With Cuey, your context follows you when you move between models, so switching providers does not require you to re-explain who you are, what you are working on, or what you have already decided. The extension accesses the page content needed to provide model comparison and context features in order to do this. How Cuey works overall is deliberately low-friction. There are no API keys to obtain and nothing to configure. You click Add to Chrome to install the extension, open your preferred AI tool, enter a prompt and let Cuey run it across your selected models, then open the Cuey sidebar icon to see where the models agree and disagree. The whole setup is described as taking 30 seconds, and it is free to install with no account required to start. Because Cuey is not a replacement for the AI you already use, it runs alongside it — the product's own example is that if you already have ChatGPT Plus, Cuey gives you a second opinion from three other models without needing another subscription. The benefits Cuey claims are mostly about removing friction and reducing risk. No copy-pasting and no tab-switching means the comparison is not a manual chore you are likely to skip. No extra subscriptions means the second opinion does not require paying for another AI plan. No guessing means the decision about whether an answer is trustworthy is based on what several models actually said rather than on gut feel. Because answers are shown side by side in the tool you are already using, the check fits into the moment before you act on an AI response, which is exactly when an error is most expensive. The result is a faster, more informed decision about whether to use an answer as-is, revise it, or ask again. Concrete uses follow directly from those capabilities. If you have an answer you are about to act on, you can cross-check it against other models and see whether they land in the same place. If you are choosing between models for a particular kind of task — reasoning, ad copy or anything requiring real-time internet access — the side-by-side view shows which model produced the stronger output. If you are working in more than one AI tool, you can import your history and memories so that context carries over instead of being rebuilt from scratch each time you switch. And because Cuey supports multiple languages, users who work in languages other than English can run the same comparison on the same answers. Cuey is built by Llama Valley Inc, whose stated mission is to make AI easier to use and more useful for everyday work. The free tier includes side-by-side comparison, cross-checking against 30+ models with a daily free limit, multi-language support, and operation inside all seven major AI model providers Cuey names. The extension's Chrome Web Store listing notes that in-app purchases are offered, and it lists eight languages: German, English, Spanish, French, Italian, Portuguese (Brazil), Chinese (China) and Japanese. On privacy, Cuey states that it does not sell your data ever, and that it accesses the page content needed to provide model comparison and context features. Cuey's value proposition is narrow and specific: give any AI answer a second opinion before you act on it. By comparing responses from ChatGPT, Claude, Gemini, Grok, DeepSeek and 30+ other models side by side inside the tool you already use, it turns the question of whether an answer can be trusted into something you can see rather than something you have to assume. Free to install, requiring no account and no API keys, it adds a comparison step to everyday AI work without adding another subscription, another app or another tab.