The one-click prompt optimizer

For everyday prompting: one that works inside every AI you use, optimizes in one click, and proves itself before asking for an account. PromptAI does all three — ChatGPT, Claude, Gemini, Copilot, and Perplexity in the browser, Claude Code and Cursor via Mac hotkey, and a free no-login widget on this page. For prompts that ship inside products at scale, pair it with an eval framework — different job.

It completes the specification: role, context, ordered instructions, constraints, and output format. Models fill unspecified gaps with defaults — generic tone, arbitrary format, padded length. Optimization closes the gaps so the model spends its capability on your request instead of on guessing what you meant.

Yes. The widget on this page runs free with no sign-up. The Chrome extension is free to install with a 5-day trial, and paid plans start at $7.99/month for unlimited use across the extension and the Mac app.

Yes, and the same optimized prompt transfers between them — role, structure, and format constraints work across every major model. Claude follows them the most strictly, which makes it the model where optimization visibly pays off most, but ChatGPT and Gemini improve measurably from the same structure.

Frameworks optimize one prompt against test data and metrics — the right tool when a prompt ships inside a product and runs constantly. PromptAI optimizes the stream of one-off prompts you write by hand every day, where nobody is going to build an eval suite for a newsletter draft. Instant structural optimization, not benchmark iteration.

Yes — highlight the draft anywhere on macOS and press ⌘⇧P, including in your code editor or the GPT builder. Instructions and system prompts are the highest-leverage optimization targets because they run on every future conversation.

No. Text is sent only to the model that produces the optimization, never used for training or analytics, never shared. Billing metadata only — counts, not content.