Predictive text in Gemini and Perplexity: write your prompts faster

Yes, Lightkey works in Gemini and Perplexity. They write the answers, but you still type the questions. As you do, 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

Gemini runs in the browser, so Lightkey works there through the Lightkey extension for Chrome or Edge, which works together with the Lightkey desktop app.

Perplexity works in its Windows app and in the browser. Install the Lightkey desktop app for the app, and add the extension for the browser.

Start your free 30-day trial

What it helps you write in Gemini and Perplexity

Research questions and prompts follow patterns. Lightkey learns yours, for example:

• “Compare the main options and list the pros and cons.”

• “Find recent sources on this and summarize them.”

• “Explain this as if I'm new to the topic.”

• “Give me three examples with links.”

Lightkey also works in ChatGPT, Claude and Microsoft Copilot.

Your prompts, typed on your device

Lightkey predicts as you type, on your own computer. It doesn't send your questions any where; only Gemini or Perplexity receives what you send.

Get started

1. Download Lightkey and start your free 30-day trial.

2. Install the Lightkey extension for Chrome or Edge (needed for Gemini, which runs in the browser).

3. Open Gemini or Perplexity 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 and Claude.

Frequently asked questions

Does Lightkey work in Gemini?

Yes. Gemini runs in the browser, and Lightkey works there through the Lightkey extension for Chrome or Edge, which works together with the Lightkey desktop app.

Does Lightkey work in Perplexity?

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

Does Lightkey send my questions anywhere?

No. Lightkey's prediction engine runs on your computer. Only the AI assistant receives what you send it.

Does Lightkey work in other AI assistants?

Yes, including ChatGPT, Claude and Microsoft Copilot.