PromptPerfect
Optimize prompts for better outputs across major AI models
PromptPerfect helps you generate, refine, and optimize prompts for models like GPT-4, Claude, and Midjourney. It also offers prompt APIs and model-switching workflows for teams and builders who want faster iteration.
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About
PromptPerfect is a cloud-based prompt optimization tool for people working with LLMs and image models. It sits in the prompt-engineering category rather than being a general AI assistant: you use it to improve prompts before sending them to models like GPT-4, Claude, and Midjourney.
It appears aimed at creators, marketers, and engineers who want better outputs with less trial and error. According to the site, you can get started in the web app, use prompt generation and auto-tuning flows, and access prompt-as-a-service and API options on higher plans.
PromptPerfect is useful if your main bottleneck is prompt quality. It supports multiple model providers, and the site emphasizes prompt optimization for text, image generation, brainstorming, writing improvement, and coding-related tasks. That said, it is not an autonomous agent that completes multi-step work on your behalf; it is primarily a prompt workflow and API product.
A notable caveat is that the site says PromptPerfect will no longer be available after September 1, 2026, following Jina AI’s acquisition by Elastic in October 2025. Pricing is public, but model details beyond the supported providers listed on the site are limited, and privacy or storage policies were not clearly stated in the crawled content.
Responds to prompts but takes no autonomous action.
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- Free: 10 requests per day for all users.
- Pro ($19.99/mo): 500 requests per day for Auto-tune and Interactive, plus 500 model requests per day for Arena.
- Pro Max ($99.99/mo): API access, 1,500 requests per day for Auto-tune and Interactive, 1,000 requests per day for Prompt as a service, 1,500 model requests per day for Arena, and 1,000 requests per day for Agents.
- Enterprise: Contact sales.