3.9 / 5

Typing Copilot

AI suggestions appear as you type, not after you stop

Serious

Instant

Privacy

The Problem

AI writing help is too slow and disruptive; you lose your train of thought

Current Solutions (Not Great)

Grammarly (suggestions after pause), ChatGPT (separate window), basic autocomplete (just words)

Who Needs This

Writers, developers (for comments/docs), email power users, content creators

Most AI writing assistants wait until you pause or ask for help. Typing Copilot works at keystroke speed—suggestions appear inline as you type, like autocomplete but smarter. It predicts not just the next word but the next phrase or sentence based on context. Tab to accept, keep typing to ignore. It feels like the AI is thinking alongside you, not responding to you. Because it's local, there's no network latency—suggestions appear in milliseconds.

Honest Take

You're competing directly with GitHub Copilot, Cursor, and every other AI coding assistant that's adding this exact feature. The keystroke-level latency requirement is brutal—you'll need an incredibly optimized model. Market is crowded but if you nail the speed advantage, there's room.

Monetization Ideas

Ways to turn this into revenue

Freemium

Free basic, $5-15/mo for pro

Subscription

$5-29/month or $49-199/year

One-Time Purchase

$9-49 per license

Features

Key features that make this app valuable

Inline ghost text suggestions
Tab to accept, keep typing to ignore
Context-aware (considers full document)
Multiple suggestion options (arrow keys to cycle)
Style matching (learns your voice)
Works in any text field
Adjustable aggressiveness
Disable per-site

Build Prompt

Use this prompt with an AI assistant to start building

Build a Chrome extension called 'Typing Copilot' using WebInfer. Manifest V3 with activeTab permission. Content script: attach to all textarea and contenteditable elements. On 'input' event, capture: current text, cursor position, surrounding context (previous paragraphs). Debounce 50ms, then request completion. Use generateText with streaming for fastest first-token. Display suggestion as ghost text: create span with gray color, position after cursor using CSS. Event handlers: Tab accepts (insert text, move cursor), any other key dismisses. Arrow up/down cycles through top 3 suggestions (generate with n:3). Settings popup: aggressiveness slider (suggest after every word vs. every sentence), style toggle (match my style vs. help me write better), site blocklist. Track acceptance rate to improve suggestions. Use speculative execution: pre-generate likely continuations for common patterns.

Score Breakdown

Pain