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Prompt Optimizer

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Prompt engineering IDE with quality scoring, automated tuning, and side-by-side model comparison

Prompt Optimizer is a prompt engineering tool for writing, testing, and refining prompts before deployment. It scores prompts across dimensions like specificity, clarity, model fit, and completeness, and offers an auto-tune mode that runs iterative optimization passes targeting weak areas.

It includes an interactive refine mode with live score updates, multi-step workflow pipelines, and an arena for comparing outputs side by side across multiple model providers. A REST API and import/export support fit it into CI/CD pipelines and existing prompt libraries.

A free tier covers a limited number of optimizations per day, with paid plans adding more credits and full API access.

Pricing: Monthly subscriptions

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