Predictive text in VS Code and Cursor: write your prompts faster
Yes, Lightkey works in VS Code, Cursor, Codex and Devin on your Windows PC. As you write in the chat box, Lightkey predicts your next words in grey right where you're typing. Press Tab to accept, or keep typing. Lightkey stays out of your code: predictions appear only in the chat box, where you describe what you want.
How it works
Install the Lightkey desktop app and open VS Code, Cursor, Codex or Devin. Predictions appear in the chat box as you write your prompt, with nothing to set up in the editor.
Lightkey leaves the code editor itself alone, so it never competes with your code completions.
What it helps you write
Prompts to a coding assistant repeat more than you'd think. Lightkey learns yours, for example:
“Add unit tests for this function.”
“Explain what this code does.”
“Refactor this to use async/await.”
“Fix the failing test without changing the existing behaviour.”
Spelling suggestions appear above a misspelled word, so a typo doesn't muddle your prompt.
Your prompts, typed on your PC
Lightkey's prediction engine runs on your own computer. What you type isn't sent to a cloud service to get a prediction. Your prompt goes only to the assistant you send it to.
Get started
Download Lightkey and start your free 30-day trial.
Open VS Code, Cursor, Codex or Devin, 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.
Frequently asked questions
Does Lightkey predict code?
No. Lightkey works in the chat box of VS Code, Cursor, Codex and Devin, where you write prompts. It doesn't make suggestions inside your code.
Will Lightkey clash with my code completions?
No. Code completions work in the editor, and Lightkey predicts only in the chat box, so the two don't overlap.
Does Lightkey send my prompts anywhere?
No. Lightkey's prediction engine runs on your computer. Your prompt goes only to the assistant you send it to.
Does Lightkey work in other AI assistants?
Yes, including ChatGPT, Claude, Microsoft Copilot, Gemini and Perplexity.
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