Pinnacle

API & SDK for RCS (the next-generation of texting)

y-combinatorSummer 2024Developer Tools B2B Sales E-commerce SMS 🇺🇸 San Francisco2 people

pinnacle.sh in LinkedIn 𝕏 Twitter

Ivan Zhang, Sean Roades · 2 co-founders

2024Founded

Team

current

Co-founders

current

Stage

Founded

Source for Founded

Profile coverage4 of 8 · missing Funding, Signals, Customers, Stack / tools · last run 8/10/2026

About

Pinnacle is an API for RCS, the new standard for SMS for app-like text messages.

2 founders

Ivan Zhang

Founder

Pinnacle (YC S24). Building with RCS

in LinkedIn 𝕏 @aivanzhang

Sean Roades

Founder

Sean is co-founder & CEO of Pinnacle (S24). After graduating from Harvard College where he studied computer science and econometrics, Sean worked at YouTube where he built machine learning models that handled billions of dollars of ad spend.

in LinkedIn 𝕏 @SeanRoades