How it works
What goes in and what comes out
You give your name or brand and, optionally, what you do and what you care about. An AI model (Llama 3.1 8B, run on Cloudflare Workers AI) writes four different Substack publication bios in the tone, length and language (English or Vietnamese) you choose. Each draft has its own copy button, and "Write new drafts" asks again with the same brief.
The prompt describes how people write on Substack: What readers get, how often (only if the brief says) and in whose voice. Plain, inviting prose.
Length
Substack sets no hard length for a publication bio that we could confirm, so the counter shows a plain character count.
Short, Medium and Long aim for about 40–90, 80–160 and 160–400 characters, within any limit.
