Tech riderRev. 7 Oct 2026
  1. 1Runs onAPI, Browser, Web
  2. 2CostsFree plan
  3. 3Model supportmultiple
  4. 4Optimization modeautomated
  5. 5API accessYes
5 lines stated Written from the maker's own pages: promptperfect.beaglecorp.com
The PromptPerfect homepage

Overview

PromptPerfect is ranked #17 of 30 in AI prompt generators on Specifiction. It runs on API, Browser extension, Web. There is a free plan.

PromptPerfect plans and pricing

All plans
Free Free Free; open-source promptperfect.beaglecorp.com · 7 Oct 2026

Compared on AI prompt generators

Free plan
Yespromptperfect.beaglecorp.com
Model support
multiplepromptperfect.beaglecorp.com
Optimization mode
automatedpromptperfect.beaglecorp.com
API access
Yespromptperfect.beaglecorp.com

Facts

Purpose
PromptPerfect is an open-source prompt optimizer that teaches users why a rewritten prompt works.promptperfect.beaglecorp.com · 7 Oct 2026
Optimization
The web app lets users paste a prompt, pick a mode, optimize it, and learn why the rewrite works.promptperfect.beaglecorp.com · 7 Oct 2026
Browser extension
The Chrome extension is described as working on sites including ChatGPT and Gmail.promptperfect.beaglecorp.com · 7 Oct 2026
API
The API accepts a draft prompt and returns an optimized version for use from a backend or scripts.promptperfect.beaglecorp.com · 7 Oct 2026
Providers
The API supports Gemini, OpenAI, and Anthropic providers.promptperfect.beaglecorp.com · 7 Oct 2026
Modes
The documented optimization modes include better, specific, cot, developer, research, beginner, product, and marketing.promptperfect.beaglecorp.com · 7 Oct 2026
API response
The API response includes optimized text, an explanation, changes, the raw text, provider, and model.promptperfect.beaglecorp.com · 7 Oct 2026
API keys
Users can provide a provider API key in the request body or as a Bearer token; the documentation says the Bearer token takes precedence if both are supplied.promptperfect.beaglecorp.com · 7 Oct 2026
Shared quota
The hosted Gemini free tier uses configured server keys, and anonymous callers on that deployment share the quota.promptperfect.beaglecorp.com · 7 Oct 2026
Rate limits
The documentation says the codebase does not enforce a custom requests-per-minute counter on the synchronous API; throughput depends on the hosting platform and provider quotas.promptperfect.beaglecorp.com · 7 Oct 2026
Security
The homepage states that the user's API key never leaves their browser.promptperfect.beaglecorp.com · 7 Oct 2026
License
The homepage states that PromptPerfect is open source under the MIT License.promptperfect.beaglecorp.com · 7 Oct 2026
Maker
The product is identified as being by Beagle and built by the Beagle Builder Program.promptperfect.beaglecorp.com · 7 Oct 2026

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