PromptFast

PromptFast

Test prompts on any model. No setup, no wait.

2 followers

PromptFast is a prompt playground for AI developers. Test any prompt against 13+ models across OpenAI, Anthropic, and Google — instantly, no pipeline setup required. Get real-time streaming, exact cost tracking per run, file uploads (PDF, CSV, DOCX), side-by-side model comparisons, and full experiment history. One environment. Every model. Zero wait.

PromptFast makers

Here are the founders, developers, designers and product people who worked on PromptFast