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PromptFast — Startup Profile
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PromptFast

Iterate on any prompt against any model - without spinning up your entire stack.

AI & AutomationEstimated

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About the startup

PromptFast is a subscription-based SaaS playground for prompt engineers and AI developers. It provides an isolated, fast, multi-model environment to test, compare, and track prompts — without touching your application infrastructure. - Run a prompt against 13+ models across OpenAI, Anthropic, and Google simultaneously - See real-time token-by-token streaming responses - Track exact cost per run with model-specific pricing - Upload PDFs, CSVs, DOCX files as document context - Keep a full history of every experiment, reloadable in one click - Compare two models side-by-side with parallel execution

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