Rewrite a vague prompt into a detailed, specific one that gets better AI responses.
Compare how different prompt versions perform against the same AI model to find what works best.
Optimize image generation prompts by expanding one-line ideas into rich, detailed descriptions.
Test system prompts to fine-tune how an AI behaves before deploying it in production.
Prompt Optimizer is a tool for rewriting the instructions you send to AI models so they produce better answers. When you type a request to an AI model, that request is called a prompt; the phrasing of it has a big effect on what comes back. This project gives you a workspace where you can paste a rough prompt, have the tool rewrite it into a clearer version, then test the rewritten version side by side against the original so you can judge whether it actually improved. It supports two kinds of prompt: the system prompt that sets the AI's overall role, and the user prompt that asks a specific question. The README says you can run optimization in one click and iterate over multiple rounds, then compare results to confirm a prompt has truly improved. The tool also handles image generation prompts, including text-to-image, image-to-image, and multi-image setups. You can store useful prompts as reusable favorites with version history, bring in starting prompts from templates or from an external Prompt Garden, and run tests that include reusable variables, multi-turn conversations, and Function Calling. It connects to a list of model providers including OpenAI, Gemini, DeepSeek, Zhipu AI, SiliconFlow, and MiniMax, and ships in four forms: a web app, a desktop app, a Chrome extension, and a Docker image. This is useful for anyone who writes a lot of AI prompts, whether for chat answers or for image generation, and wants a structured place to refine and reuse them. The codebase is written in TypeScript, and the README notes the architecture is client-side so your data goes directly to the AI provider. The full README is longer than what was provided.
Generated 2026-05-21 · Model: sonnet-4-6 · Verify against the repo before relying on details.