ContextFlow - Continue AI Chats Across LLMs

About

What It Does

Every AI has a different strength. You start a conversation on one platform, get halfway through something complex, and then want a second opinion from another. Or you use one AI for research and want to continue the analysis somewhere else. Normally you would copy the whole conversation manually, paste it, re-explain everything, and hope the other AI understands the context. ContextFlow removes all of that friction.

ContextFlow reads your current AI chat, uses Google Gemini AI to generate an intelligent summary of everything discussed, copies that summary to your clipboard, and lets you open a new conversation on any other AI with the context already pasted in. The entire process takes one or two clicks.

Why You Should Install This

If you use more than one AI regularly, you have almost certainly run into the problem of losing context when switching platforms. Copying a full 50-turn conversation is useless because the other AI gets overwhelmed with raw text. ContextFlow solves this by sending a clean, structured summary instead, the kind a human would write if they were briefing a colleague. The receiving AI immediately understands the topic, what was tried, what worked, and what still needs solving.

This is especially useful for developers debugging across tools, researchers comparing AI reasoning, writers getting feedback from multiple perspectives, and anyone who wants to use the best AI for each stage of a task rather than being locked into one platform.

There is no account, no login, no server, and no subscription. Your conversations never leave your browser unless you choose to use Gemini to summarize them, in which case only the text of your chat is sent to Google's API using your own personal API key.

Supported Platforms

ContextFlow works on all major AI chat platforms. The floating button appears automatically when you open any supported AI and activates without any setup needed.

How to Use ContextFlow

Step 1. Install the extension. A small floating button will appear on the corner of every supported AI chat page.

Step 2. Have a conversation on any supported AI. When you are ready to move that conversation somewhere else, look for the floating button.

Step 3. Click the floating button once to open the panel. You will see two main buttons, a row of shortcuts to continue in other AIs, and a settings gear in the top-right corner.

Step 4. Click "Copy Chat Context." ContextFlow reads your conversation, generates a summary, and copies it to your clipboard. The button will show a loading spinner while it works, then briefly turn green to confirm success.

Step 5. Click any shortcut in the "Continue in" row. ContextFlow opens that platform in a new tab and pastes your summary into the message box. Press Enter and you are already continuing the conversation with full context.

If you want to paste the context again later, click "Paste Saved Context." ContextFlow stores the last summary you copied so you do not have to re-extract it.

The Floating Button

The floating button lives on top of every supported AI page without interfering with the page itself. Here is everything it can do.

Single tap: Opens the ContextFlow panel.

Double tap: Copies your chat context immediately, without opening the panel. This is the fastest way to grab context when you already know you want it.

Triple tap: Pastes your previously saved context into the current page's chat input. Useful if you want to bring context from one AI into another.

Drag: You can drag the floating button anywhere on the screen and it will stay there. Your custom position is saved and remembered across all tabs and visits.

The button is semi-transparent by default so it does not distract you while reading. It becomes fully opaque when you hover over it.

Panel Buttons Explained

Copy Chat Context: This is the main action. Clicking it reads your current conversation, runs it through your chosen summary method, and copies the result to your clipboard. The context is also saved inside the extension so you can paste it again later.

Paste Saved Context: Inserts the last summary you copied into the current AI's input field. This button is greyed out until you have copied at least one context.

Continue in shortcuts: Each shortcut does two things at once. It copies your current chat context and then opens the chosen AI in a new tab with the context already typed into the message box, ready to send. You do not need to manually copy first.

Settings gear icon: Opens the settings view where you can configure your Gemini API key, summary method, and follow-up prompt.

Close button: Closes the panel. You can also close it by clicking anywhere outside the panel.

Settings — Everything You Can Configure

To open Settings, click the floating button once to open the panel, then click the gear icon in the top-right corner.

Summary Method

This is the most important setting. It controls how ContextFlow generates the summary of your conversation. There are four options.

Auto: ContextFlow automatically picks the best method available. It tries Gemini cloud AI first if you have provided an API key, then Chrome on-device AI if your Chrome version supports it, and finally falls back to the Compact method. This is the recommended option because it always produces a result even without an API key.

Gemini: Uses Google's Gemini model via the cloud to write a high-quality AI summary. Produces the most accurate and well-structured output. Requires a free Gemini API key. Only your conversation text is sent to Google's servers using your own API key. Nothing passes through any ContextFlow server.

On-device: Uses Gemini Nano, which runs directly in Chrome on your computer. Completely private, no internet connection needed for the summary step, and no API key required. This option requires Chrome version 138 or later with on-device AI enabled in browser settings.

Compact: A simple structured format that does not use any AI. ContextFlow formats the conversation as a list of questions and short answers. It always works offline, needs no API key, and works on any Chrome version.

Gemini API Key

This field only appears when you have selected the Gemini summary method. Paste your Gemini API key here and click Save. The key is stored locally in your browser and is never transmitted to any server other than Google's own Gemini API when you trigger a summary.

How to get a free Gemini API key:

Go to aistudio.google.com and sign in with your Google account.

Click "Create API key" and copy the key that appears.

Paste it into the Gemini API Key field in ContextFlow settings and click Save.

The free tier does not require a credit card. For personal use, you are very unlikely to hit any limits.

Follow-up Prompt

A custom instruction added to the end of your summary whenever you paste context into another AI. For example, you could write "Based on this summary, what would you do differently?" The follow-up prompt personalizes every paste so you do not have to retype the same instruction every time you switch platforms.

Leave this field empty if you just want to paste the raw summary without any additional instruction. Click "Save prompt" to store it.

Keyboard Shortcut

Ctrl + Shift + E on Windows and Linux, or Command + Shift + E on Mac. This copies and summarizes your current AI conversation without clicking anything. It works even if the ContextFlow panel is closed.

FAB Position

You can drag the floating button to any position on the screen and it will remember where you put it. Default positions are bottom-right and bottom-left. There is also a near-input mode that positions the button close to the chat input field on each page.

Privacy

ContextFlow does not have any backend server. The extension does not collect, store, or transmit your conversations to anyone other than the AI platform you choose. If you use the Gemini summary method, your conversation text is sent directly from your browser to Google's Gemini API using your own API key. No data passes through ContextFlow's infrastructure because there is none.

Your saved context and settings are stored locally using Chrome's storage API, which means they stay on your device and are not synced or shared.

Permissions Explained

activeTab: Needed to read the content of the AI chat page you are currently on.
scripting: Needed to inject the floating button and panel into AI chat pages.
storage: Needed to save your API key, settings, and last copied context locally.
clipboardWrite: Needed to copy the summary to your clipboard.

Requirements

Chrome version 120 or later. The on-device summary method additionally requires Chrome 138 or later with on-device AI enabled in browser flags.