Skip to content
thinkbesideAdd to Chrome
Chrome extension · bring your own keys

Every AI model, right beside your work.

Ask GPT, Claude, Gemini, DeepSeek or Grok about the page, PDF or video you’re on — without copying, pasting or switching tabs.

Add to Chrome — freeHow it works
Chatting about an article in the Thinkbeside side panel

Up and running in a minute.

  1. 1

    Add to Chrome

    Install from the Chrome Web Store. No account needed.

  2. 2

    Connect a provider

    Paste an API key from OpenAI, Anthropic, Google, DeepSeek or xAI. One is enough.

  3. 3

    Press Alt+O

    (⌥O on Mac.) The panel opens next to whatever you’re reading. Select text, or just ask.

Any webpage

Select anything, then ask.

Highlight a passage and a toolbar appears: explain, rewrite, summarize or ask your own question. The page stays right where it is.

AI on any webpage →
Thinkbeside side panel summarizing a news article
Compare

Ask several models at once.

Send one question to several models and read the answers side by side. Spot where they agree, and where one knows something the others missed.

See supported models →
Answers from several models shown side by side
PDFs

Chat with PDFs, with page citations.

Open a report or paper and ask questions. Every answer points back to the page it came from, so you can check it.

Chat with PDFs →
Thinkbeside summarizing a PDF research brief with page citations
YouTube

Get the point of a video in seconds.

Summaries, key moments and a searchable transcript, with timestamps that jump straight to the right second.

Summarize YouTube videos →
Thinkbeside summarizing a YouTube video with timestamps

Your pages, your keys, your business.

Thinkbeside doesn’t run its own AI servers. It sends what you share straight to the provider you pick. Your chats, keys and settings stay on your device; an optional account stores your email, name and token counts.

Read the privacy policy →

  • Keys stay in your browser

    Stored locally and sent only to the provider they belong to.

  • Nothing is read until you ask

    Page access happens when you send a message — not in the background.

  • No middleman servers

    Requests go straight from your browser to the AI provider.

  • Never used for training

    We don’t collect your content, so there’s nothing to train on.

Every major provider, one picker.

New models show up as providers release them. Connect one provider or all five.

Questions

Yes, the extension is free to install. You connect your own API keys and pay each AI provider directly for what you use — usually a few cents a day.

Think beside your work.

Free to install. Works with the API keys you already have.

Add to Chrome

Also works in Edge, Brave and Arc.