Tangent – Threaded Chat for ChatGPT & Claude

Branch off into side threads without leaving your main Claude or ChatGPT conversation

The Chrome extension that adds side conversations, parallel threads, and split-screen chat to ChatGPT and Claude. You're in a ChatGPT or Claude conversation and it finally clicks — the AI just gave you the clearest explanation you've ever read on a topic. Then you have a follow-up question. But asking it means derailing the thread. You want a side conversation — a quick fork — without breaking your flow state. You don't want to open a new tab, lose your place, or pollute the main thread with tangents. Tangent is the ChatGPT and Claude extension that solves this. Open a parallel chat thread in a floating panel — right next to your main conversation — without leaving the page, opening a new tab, or losing focus. What Tangent gives you on ChatGPT and Claude: Fork any message into a floating window. Multitask across parallel conversations simultaneously. Keep your main thread clean while you explore sub-threads, chase rabbit holes, and ask follow-up questions in dedicated side conversations. Chat branching that feels natural — not bolted on. When you're done, close the thread or minimize it to a tab and jump right back — the original text flashes to remind you exactly where you branched off. Thread management is effortless: minimize, restore, drag, resize, and stack as many parallel chats as you need. How to use Tangent on ChatGPT or Claude: Highlight any text in a ChatGPT or Claude conversation Click "Open Thread" on the floating button that appears A floating panel opens with a fresh, temporary side conversation on ChatGPT or Claude Your highlighted context is auto-pasted — no copy-pasting, no friction Press Cmd+\ to open a blank parallel thread anytime Minimize threads to a tab strip at the bottom; restore with one click The original passage highlights when you return so you never lose your place Familiar if you use Claude Code: If you use Claude Code's terminal and love forking conversations to explore side questions, Tangent brings that same branching workflow to ChatGPT and Claude in the browser. Same concept — branch off, explore, come back — but for the web UI. Built for: ChatGPT and Claude power users who think in branches, not lines Students using AI chat to work through papers, textbooks, or documentation Developers debugging, learning APIs, and exploring concepts in parallel threads Writers, analysts, and researchers juggling multiple lines of inquiry at once Anyone who multitasks across topics and has ever lost their place in a ChatGPT or Claude conversation Deep work practitioners who need to preserve focus while exploring tangents Features: Side conversations on ChatGPT and Claude — fork any message into a sub-thread Parallel chat threads — multiple simultaneous floating panels Split-view AI conversation — main thread stays intact while you branch off Chat branching — non-linear conversations that match how you actually think Auto-paste context — selected text lands in the new thread automatically Temporary and incognito sessions — ephemeral chats that don't clutter your sidebar or history Thread management — minimize any panel to a compact tab, restore instantly Visual scroll-back — source text highlights when you re-expand a thread Keyboard shortcuts: Cmd+\ for a blank thread, Escape to minimize Drag and resize floating windows freely Works on chatgpt.com and claude.ai — same experience on both platforms Why Tangent? ChatGPT and Claude are the most powerful thinking tools ever built — but they're trapped in a single-thread, linear chat format that fights against the way your brain actually works. Real thinking is non-linear. Ideas branch. Questions spawn sub-questions. Side conversations happen naturally — they shouldn't require a new tab. Tangent gives ChatGPT and Claude the threading model they were always missing: parallel, branching, non-destructive side conversations that live next to your main thread without polluting it. Preserve your flow state. Maintain deep focus. Explore every tangent without losing your place. Stop linearizing your thinking to fit the chat box. Fork off. Explore. Come back. The only Chrome extension for threaded, parallel, split-screen side conversations on both ChatGPT and Claude. No new accounts, no API keys, no subscriptions — works with your existing ChatGPT or Claude plan. Fully open source. Zero data collection.