Prompt Optimizer
Self-hosted tool to test and refine LLM prompts
Prompt Optimizer is a web and browser-extension tool for iteratively improving prompts by comparing model outputs side by side. It runs entirely client-side or self-hosted and supports multiple model providers.
Key features
- Iterative prompt tuning
- Side-by-side comparison
- Multi-provider support
- Browser extension and web
Strengths
- Released under the MIT license
- Easy to set up — beginner-friendly
- First-class Docker support for quick deployment
- Mature project with 33k GitHub stars
Prompt Optimizer replaces
Compare Prompt Optimizer
10 head-to-head comparisons.
- Prompt Optimizer vs OpenClaw
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- Prompt Optimizer vs Hugging Face Transformers
- Prompt Optimizer vs Langflow
- Prompt Optimizer vs Dify
- Prompt Optimizer vs PaddleOCR
- Prompt Optimizer vs RAGFlow
- Prompt Optimizer vs OpenHands
- Prompt Optimizer vs screenshot-to-code
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