# Typa

> Typa is a YC-backed (S24) AI ghostwriting platform that helps founders, companies, and agencies turn voice notes, links, and stray ideas into on-brand posts across X, LinkedIn, Bluesky, and newsletters. Built by the team behind Weavel, its 24/7 agent 'Puff' learns a user's voice, keeps a self-updating knowledge base of their work, and drafts content for approval before publishing - aiming to make consistent, authentic content possible without burnout.

- **Founded:** 2023
- **Headquarters:** San Francisco, California, United States
- **Founders:** Andrew Chung (Co-Founder & CEO), Junyoung Park (Co-Founder (Co-CEO / Engineering)), Hyun Jie Jung (Co-Founder)
- **Team size:** 4
- **Products:** Typa, Puff, Ape (Weavel, prior product)
- **Notable:** Accepted into Y Combinator's Summer 2024 (S24) batch., Pivoted from a prompt-engineering tool (Ape/Weavel) to Typa after listening to founder demand for authentic content help., Built a multi-channel AI ghostwriter accessible via iMessage, Slack, WhatsApp, and phone calls.

## Products & services

- **Typa** — AI ghostwriting and publishing platform that researches, drafts, and publishes on-brand content across X, LinkedIn, Bluesky, Medium, and newsletters, learning the user's voice and keeping a self-updating knowledge base. Every draft requires user approval before it goes live.
- **Puff** — Typa's 24/7 AI ghostwriter and strategist, reachable via phone call, WhatsApp, iMessage, and Slack. Turns voice notes and links into polished posts and helps brainstorm and plan content.
- **Ape (Weavel, prior product)** — An earlier product from the same team - a prompt engineering / prompt optimization tool - built before the pivot to content ghostwriting under the Typa brand.

## Achievements

- Accepted into Y Combinator's Summer 2024 (S24) batch.
- Pivoted from a prompt-engineering tool (Ape/Weavel) to Typa after listening to founder demand for authentic content help.
- Built a multi-channel AI ghostwriter accessible via iMessage, Slack, WhatsApp, and phone calls.
- Reports 94% accuracy to a user's authentic voice on generated drafts.

## Latest updates

- **2024-07** — Weavel selected for Y Combinator's Summer 2024 batch and secured follow-on investment.
- **2024-08** — Team building in the open; reported seed-stage funding around this period.
- **2024** — Pivoted from prompt-engineering product Ape to the Typa content ghostwriting platform and launched the Puff agent across chat and voice channels.

## Links

- Website: https://typa.ai
- LinkedIn: https://www.linkedin.com/company/typadotai
- Twitter/X: https://x.com/typadotai

---

Profile page: https://yespress.io/typa-yc-s24
Published by YesPress — https://yespress.io
Last updated: 2026-07-30