chat.cx is a Chrome eXtension that puts every AI chat in one panel: ChatGPT, Claude, Gemini, Grok, DeepSeek, and 30+ more, plus your own models via any OpenAI-compatible API or on-device AI. Ask any AI about the page you're on: insert its text or your selection, attach screenshots, or fire one-tap prompts like Summarize from a customizable prompt library. Split-screen compare, right-click Ask AI, on-page launcher, MCP servers, built-in web search, and persistent chats with your real accounts.