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Tensai
Automatic AI context bridge for Claude & ChatGPT
Switch from Claude to ChatGPT and your prompt box is already filled - the decisions, open questions, and code from your last exchange, compressed locally. No button, no popup, no icon to click. Every other context-bridge extension makes you trigger the handoff manually; Tensai starts the moment you switch tabs. It also notices when Claude is nearing its context limit and pre-fills the handoff before you lose the thread. No cloud, no API key, no telemetry.
I built Tensai because of a flow I run daily: Claude for architecture and reasoning, ChatGPT for coding and fast audits. Every switch meant re-explaining what we'd already worked out in the other tab.
Tensai fixes that at the tab switch itself. Move from Claude to ChatGPT or vice-versa and the handoff is already sitting in the prompt box - decisions, open questions, code, compressed locally. You read it, edit it if you want, send it yourself. Nothing auto-sends.
The hard part was making that trigger reliable - telling a deliberate tab switch apart from a background tab, across Claude's and ChatGPT's very different DOMs. Once that worked, I looked at what else was out there and realized most context-transfer extensions still need a click somewhere - an icon, a button, a popup step. That's a fine trade if you remember to do it. I kept forgetting exactly when I needed it most, which is what pushed me toward automatic in the first place.
Context-limit detection came later, almost as a side effect - once tab-switch detection was solid, noticing "Claude is about to hit its limit" and pre-filling the ChatGPT handoff early was a small extra step.
Would love feedback, especially from anyone who's tried a context-transfer extension before - did the manual step ever get in the way for you, or did it not matter?
About Tensai on Product Hunt
“Automatic AI context bridge for Claude & ChatGPT”
Tensai was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #4 on the daily leaderboard. Switch from Claude to ChatGPT and your prompt box is already filled - the decisions, open questions, and code from your last exchange, compressed locally. No button, no popup, no icon to click. Every other context-bridge extension makes you trigger the handoff manually; Tensai starts the moment you switch tabs. It also notices when Claude is nearing its context limit and pre-fills the handoff before you lose the thread. No cloud, no API key, no telemetry.
On the analytics side, Tensai competes within Chrome Extensions, Productivity and Artificial Intelligence — topics that collectively have 1.2M followers on Product Hunt. The dashboard above tracks how Tensai performed against the three products that launched closest to it on the same day.
Who hunted Tensai?
Tensai was hunted by Lalit Kumar. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Tensai including community comment highlights and product details, visit the product overview.
Lalit Kumar
Hey! Product Hunt 👋
I built Tensai because of a flow I run daily: Claude for architecture and reasoning, ChatGPT for coding and fast audits. Every switch meant re-explaining what we'd already worked out in the other tab.
Tensai fixes that at the tab switch itself. Move from Claude to ChatGPT or vice-versa and the handoff is already sitting in the prompt box - decisions, open questions, code, compressed locally. You read it, edit it if you want, send it yourself. Nothing auto-sends.
The hard part was making that trigger reliable - telling a deliberate tab switch apart from a background tab, across Claude's and ChatGPT's very different DOMs. Once that worked, I looked at what else was out there and realized most context-transfer extensions still need a click somewhere - an icon, a button, a popup step. That's a fine trade if you remember to do it. I kept forgetting exactly when I needed it most, which is what pushed me toward automatic in the first place.
Context-limit detection came later, almost as a side effect - once tab-switch detection was solid, noticing "Claude is about to hit its limit" and pre-filling the ChatGPT handoff early was a small extra step.
Would love feedback, especially from anyone who's tried a context-transfer extension before - did the manual step ever get in the way for you, or did it not matter?