No. Your prompts are sent to a language-model provider to produce the enhancement and stored against your account so you can search your history. They are not used to train any model, and you can delete them at any time.

The enhancement engine sits behind a provider abstraction with a fallback chain, so the underlying model can change without changing your prompts. Bring-your-own-key support is planned, so you can route enhancements through your own provider account.

A free account gets 2 enhancements a day on the Copilot target. Pro is unlimited across every target model — Claude Code, Cursor, Copilot and ChatGPT. Limits reset at midnight UTC and the workspace always shows how many you have left.

Yes. Enhancing requires a free account — it takes an email address and a password, no card. Signing up also means your history and saved prompts are there when you come back.

You keep Pro access until the end of the term you already paid for, then move to the free plan. Your history and saved prompts stay — the daily limit changes, your data doesn't.

Not yet. The enhancement engine is a normal HTTP service, so an API is a natural next step, but it isn't available today and isn't part of any paid plan.