Prompt Efficiency — is your prompt as lean as it could be?

Paste any AI prompt and get a real-time score across five sustainability dimensions: cacheability (with cache_control, stable prefixes cost 90% less on repeated calls), output specification, task clarity, compression, and model-routing fit. Issues are ranked with fixes, and a structure-safe revision is generated — code, quotes, and newlines untouched. Heuristic pattern-matching, entirely in your browser; nothing is sent anywhere.

Part of the Sustainable AI Toolkit: all tools · methodology & sources · Model Router · Eval Bench · Water Footprint

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