Prompt Sloth rewrites rough prompts into structured ones in ChatGPT, Claude and Gemini. Free plan, Pro from $3.33/month, Lifetime $149.
Researched and fact-checked by Bartu Cavusoglu · Updated October 26, 2026
Prompt Sloth is a prompt improvement tool for people who work with AI assistants. It is available as a Chrome extension and as a Mac app, and its job is narrow: take a rough prompt and turn it into a precise, structured one before it goes to the AI.
The company says the extension works inside ChatGPT, Claude, Gemini and more than 20 other AI tools. On its site, Prompt Sloth reports a 4.8 rating on the Chrome Web Store and more than 10,000 users.
It is aimed at people who care about the quality of the output rather than prompt writing itself, such as professionals drafting proposals, briefs, reports and follow-up messages.
After installing the extension, an improve button appears inside the chat box of a supported AI tool. A user types or dictates what they mean, then clicks once. Prompt Sloth rewrites the text into a more detailed prompt without the user leaving the page.
According to the site, the rewrite keeps the user's intent and facts and adds what is missing: role, context, constraints and format. The goal is for the AI to return work that is closer to ready to send.
The Mac app follows the same pattern outside the browser. Double-tapping Control improves text in Claude desktop, the terminal and other Mac apps, and the site describes three shortcuts for sharpening and restructuring text where the user already types.
The main feature is one-click prompt improvement inside the AI tool. Alongside it is a template system: typing // opens more than 2,000 proven templates for proposals, follow-ups, briefs and reports. Users can save their own templates with their own scope language and client terminology, and these sync across devices.
History is unlimited on every plan. The site states that history is encrypted and only the user can access it, and that private templates are encrypted and tied to the account. Sign-in is Google-based.
Pro adds advanced AI models for better improvements and context memory for smarter suggestions, along with priority support, improvements and updates.
Prompt Sloth is a Chrome extension that rewrites rough prompts into precise, structured instructions inside ChatGPT, Claude, Gemini and 20+ other AI tools. A separate Mac app brings the same idea to other apps.
The Free plan is $0 with 10 improvements per week. Pro is $3.33 per month, billed annually at $39.99. Lifetime Pro is a one-time $149 payment.
Yes. The Free plan is listed as forever free and includes 10 improvements per week, unlimited private templates, the community template library and unlimited history. The homepage also says the extension needs no sign-up to start.
The site names ChatGPT, Claude and Gemini and says it works with more than 20 AI tools. The Mac app also works in Claude desktop and the terminal.
Yes. Prompt Sloth for Mac lets users double-tap Control to improve text in apps such as Claude desktop, the terminal, Slack, Mail, Notion and Cursor. It is free to download and requires Apple Silicon (M1 or later) and macOS 13+.
Typing // opens a library of more than 2,000 templates for items like proposals, follow-ups, briefs and reports. Users can also save their own private templates, which sync across devices.
The site says improved history is encrypted and accessible only to the user, and that templates are encrypted and tied to the account. Sign-in uses Google-based authentication.
The Pro plan is described as cancelable anytime. Lifetime Pro is a one-time payment with no renewals or subscription fees.