Tensai is a free Chrome extension that bridges conversation context between Claude and ChatGPT. It captures each completed AI response, compresses your session locally into a structured briefing, and pre-fills the paired AI's draft box when you switch tabs. No API key, no cloud, no auto-submit — you always review and send yourself.

Why was Tensai built?

Claude reasons deeper, ChatGPT iterates faster — most serious AI workflows use both. That means manually copying context between tabs, re-explaining decisions, and losing what was already figured out. Tensai keeps that context moving automatically, structured and local, so every switch between Claude and ChatGPT is seamless.

Is Tensai free? Do I need an account, subscription, or API key?

Tensai is completely free. No subscription, no account, no Anthropic API key, and no OpenAI API key required. You only need a logged-in Claude tab and a logged-in ChatGPT tab in Chrome. Compression runs entirely on-device with no external API calls.

Does Tensai send my conversation data to any server?

No. All conversation memory stays in chrome.storage.session inside your browser and clears automatically when Chrome closes. There are no external servers, no cloud sync, no analytics, and no telemetry. Nothing from your conversation is ever transmitted outside your browser.

Will Tensai ever automatically send a message or submit a prompt on my behalf?

Never. Tensai only fills the AI's draft box with the compressed context. You always review, edit, and press Send yourself. No auto-submit behavior exists under any condition — not on tab switch, not on context limit detection, not in any setting or future version.

Can Tensai sync context in both directions — ChatGPT to Claude as well as Claude to ChatGPT?

Yes, Tensai is fully bidirectional. It captures turns from whichever AI you are talking to and injects context in either direction — Claude to ChatGPT, or ChatGPT to Claude. Both sides contribute to the shared local session and authenticated browser QA has confirmed two-way capture and injection working correctly.

What happens when Claude hits its context limit?

Tensai detects Claude's context limit through real DOM signals and automatically fires a one-time structured handoff into the paired ChatGPT tab — your objective, decisions, open questions, and code, trimmed to a 2,500-token cap. A toast appears on Claude with a Switch now action. You still review and send it yourself.

Why does Chrome show a warning when installing?

If Enhanced Protection is enabled, Chrome shows this notice for new extensions until store reputation builds. Tensai is 100% local and serverless — simply click 'Continue to install'.

Which browsers does Tensai support?

Tensai supports Google Chrome and Chromium-based browsers on Chrome 109 or later, including Microsoft Edge, Brave, and Arc. Firefox and Safari are not supported in version 1.0.

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[ TENSAI // PRIVACY POLICY ]

Privacy Policy

Zero data transmitted. Complete local privacy by architecture.

[ Summary ]

Tensai operates entirely inside your Google Chrome browser. Your conversation context, summaries, and handoff briefings never leave your machine. No accounts, no backend servers, no analytics trackers.

1. Zero Server Architecture

Tensai is built as a zero-backend Chrome extension. Tensai does not own, lease, or operate any databases, telemetry endpoints, or cloud servers. When you use Tensai to bridge context between Claude and ChatGPT, all processing-including token estimation, text compression, and DOM insertion-runs on your local device.

2. Data Storage & Lifecycle

All transient conversation states and handoff briefings are saved in Chrome’s isolated memory scope (chrome.storage.session).

Session storage automatically clears whenever your browser closes.
Data is restricted exclusively to your local Chrome profile.
No third parties or remote endpoints have access to your stored turns.

3. Extension Permissions

To perform context sync, Tensai requests access to specific host domains:

https://claude.ai/*

Used to read completed response turns and detect Claude context limit warnings.

https://chatgpt.com/*

Used to populate the ChatGPT prompt draft box for seamless context continuation.

4. Questions & Support

If you have any questions regarding privacy or technical implementation, visit the support page.

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