Promptify

Promptify is an AI writing platform built around reusable prompt templates: a prompt library, a prompt builder, GPTs and a Chrome extension. Each template had to run reliably on whichever model suited it, without users ever thinking about providers.

Matious built the prompt builder and the execution backend behind it: a multi-LLM engine that runs templates on OpenAI, Anthropic, Cohere, Replicate or Hugging Face models, background workers for long executions, a visual workflow editor for chaining steps, and real-time streaming of results.

Users pick a template and get a streamed result, while the platform chooses and calls the right model behind the scenes. Adding a provider is a backend change, not a product change.