SubChat — inline follow-up widget

Highlight text in Claude, ChatGPT or Gemini and ask focused follow-ups in a draggable in-page sub-chat on your logged-in session.

Ask about one line — without losing your place. You're deep in a Claude answer, a long article, or a pull request, and you want to ask about ONE sentence or line of code. Normally that means scrolling away, opening a new tab, or derailing your main thread. SubChat fixes that. Highlight any text and a small "Ask" chip appears. Click it and a sleek, draggable side-chat opens right there — already seeded with what you highlighted. Ask your follow-up, get a streamed answer, and the page you were reading never moves. RUNS ON YOUR OWN SESSION — NO API KEY On claude.ai, chatgpt.com, and gemini.google.com, SubChat quietly opens a separate conversation on the account you're already logged into and streams the reply into the widget. No key to paste, no extra cost beyond your normal plan, and you're never navigated away. WORKS EVERYWHERE (PRO) Turn on web mode and the same highlight-and-ask works on any website — docs, blogs, GitHub, anywhere. Requests relay through your own Claude or Gemini session, or through an API key you provide (Anthropic, OpenAI, or Google) if you prefer. You choose the fallback order. FREE, AND PRO • Free covers claude.ai: one side-chat at a time, up to 10 a day, seeded with your selection. • Pro unlocks: unlimited & simultaneous side-chats, context modes (nearby turns / whole chat / full page), saved searchable history, Keep & Continue in Claude, web mode on every site, and a configurable engine order. BUILT TO ACTUALLY USE • Highlight → Ask → answer, right where you are • Draggable, resizable, minimizes to a bar • Answers stream in with full markdown and one-tap copy on replies and code • Retry on errors, jump-to-latest, keyboard shortcuts (Enter to send, Esc to close) • Clean light and dark themes that follow the site you're on • A simple dashboard for preferences, history, connection status, and your plan PRIVATE BY DESIGN No servers of ours. No analytics. No tracking. Your questions go straight from your browser to the AI provider you chose — never through us. Preferences, your license key, and saved history stay in your browser. The only call that isn't to an AI you picked is license validation with our payment provider, Dodo Payments. Full policy: https://subchat.sohamaggarwal.com/privacy Pro is billed by Dodo Payments (merchant of record); your license key is emailed instantly, and you can cancel anytime from the customer portal. Not affiliated with, endorsed by, or sponsored by Anthropic, OpenAI, or Google. Product names are trademarks of their respective owners, used here only to describe compatibility.