Stop guessing which prompts work. PromptBench lets you run the same prompt on Claude, GPT-5, o3, and Mistral side-by-side, score outputs 1-10, and track performance over time with analytics.
Features: multi-model playground, prompt versioning, scoring, analytics dashboard, chat & complete modes. 10 models supported.
Free with your own API keys. Pro $12/mo with managed credits.
