Predictive text in Claude: write your prompts faster

1 day ago

2 min read

Yes, Lightkey works in Claude. Claude writes the answer, but you still type the prompt. As you write it, Lightkey predicts your next words in grey right where you're typing. Press Tab to accept, or keep typing. It also suggests spelling corrections as you go.

How it works

Install the Lightkey desktop app and open the Claude desktop app on Windows. Predictions appear in the message box.

Using Claude in the browser? Add the Lightkey extension for Chrome or Edge; it works together with the desktop app.

Start your free 30-day trial

What it helps you write in Claude

Long prompts reuse the same context and instructions. Lightkey learns the ones you write, for example:

“Here is the context for this project:”
“Review this and list anything unclear.”
“Keep the answer under 200 words.”
“Write it in a friendly but professional tone.”

Lightkey also works in ChatGPT, Microsoft Copilot, Gemini and Perplexity.

Your prompts, typed on your device

Lightkey predicts as you type, on your own computer. It doesn't send your prompts anywhere; only Claude receives what you send it.

Get started

Download Lightkey and start your free 30-day trial.
Install the Lightkey extension for Chrome or Edge if you also work in the browser.
Open Claude and start typing. Press Tab to accept a prediction.

Lightkey works in more than 80 languages and in virtually every app on your Windows PC. See all supported apps.

Also read: predictive text in ChatGPT, VS Code, Cursor and Gemini.

Frequently asked questions

Does Lightkey work in Claude?

Yes. Lightkey works in the Claude desktop app for Windows and, through the Chrome or Edge extension, in Claude in the browser.

Why use predictive text if Claude writes for me?

Claude writes the answer, but you still type the prompt. Lightkey predicts the phrases you repeat in your prompts, so you write them faster and with fewer typos.