LLM Crosser

Query multiple LLM chats at once and compare responses side by side LLM Crosser: Compare AI Responses Side by Side

Tired of switching between tabs to find the best answer? LLM Crosser lets you ask one question and see how multiple AI services respond — all within a single, organized view.

[How It Works] ──────────── Open the LLM Crosser dashboard, type your question, and hit send. The extension loads each AI service in its own secure frame within the same browser tab. Your prompt is automatically delivered to every enabled service, and you can watch all responses appear in real time. Since each service runs in its own isolated frame, your existing logins and sessions stay intact. Currently supported services include ChatGPT, Gemini, Grok, Perplexity, and more.

[Core Features] ──────────── Batch Prompting Send a single prompt to all your enabled services at once. No more copying and pasting between tabs or windows. Flexible Grid Layout Arrange response panels in 1 to 4 columns. Whether you prefer a focused side-by-side view or a wide overview, the layout adapts to your screen and workflow. Prompt Templates Save the prompts you use most often and reuse them with a single click. Insert dynamic content using the {query} placeholder to keep your workflow fast. Response Export Extract any conversation as a Markdown file or copy it to your clipboard. Great for documentation, note-taking, or sharing insights with your team. Search History Every prompt you send is saved locally. Browse, search, and revisit past conversations whenever you need them. Omnibox Quick Launch Type "llmc" followed by your question directly in the Chrome address bar. The dashboard opens and your prompt is sent automatically — no extra clicks required. Custom Themes Personalize the dashboard with six built-in color themes: Midnight, Dawn, Ocean, Forest, Rose, and Mint. Multilingual Interface The interface is available in seven languages: English, Korean, Japanese, Chinese, French, Russian, and Portuguese.

[Privacy and Open Source] ──────────── LLM Crosser is free and open source under the GPL-3.0 license. It runs entirely on your local machine. No data is collected, no queries are tracked, and no conversations are stored on external servers. Note: You need your own account for each service you wish to use. This extension embeds third-party websites to streamline your workflow.