# Cognition's acquisition of TierZero

Part of Inside Cognition, researched with Autumn (https://www.autumn.ai) from public sources. Updated 2026-11-04. Interactive version: https://www.autumn.ai/resources/cognition/acquisitions/tierzero

TierZero makes "AI production agents that live in your stack, solve problems automatically, and get smarter with every issue they resolve."

- Announced: Jul 20, 2026
- Deal: Acquisition, per Accel; Cognition's post welcomes the team
- Price: not disclosed

## What happened, by date

- Jul 20, 2026: Walden Yan welcomed Anhang, Yun and the TierZero team to Cognition. [1](https://cognition.com/blog/welcoming-tierzero)
- Jul 20, 2026: Accel wrote that Cognition acquired TierZero, that Accel had led its seed round the previous year, and named Brex, Discord and Drata as customers. [1](https://www.accel.com/news/cognition-acquires-tierzero-building-the-autonomous-engineering-agent)

## In their own words

> We are so excited to welcome Anhang, Yun, and the TierZero team to Cognition. … Anhang and Yun have gone deep on this, and we are excited to bring their work on automations into Devin.

Walden Yan, Cognition co-founder, Jul 20, 2026 [1](https://cognition.com/blog/welcoming-tierzero)

## Who joined Cognition

- [Anhang Zhu](https://www.autumn.ai/resources/cognition/people/anhang-zhu) (founder): Co-founder and CEO; now Special Projects [1](https://www.tierzero.ai/blog/authors/anhang-zhu/) [2](https://www.accel.com/news/cognition-acquires-tierzero-building-the-autonomous-engineering-agent) [3](https://cognition.com/blog/welcoming-tierzero) [4](https://linkedin.com/in/anhangzhu)
- [Yun Park](https://www.autumn.ai/resources/cognition/people/yun-park) (founder): Co-founder and CTO; now Member of Technical Staff [1](https://www.tierzero.ai/about) [2](https://www.accel.com/news/cognition-acquires-tierzero-building-the-autonomous-engineering-agent) [3](https://cognition.com/blog/welcoming-tierzero) [4](https://www.linkedin.com/in/yunpark93)
- [Kevin Delgado](https://www.autumn.ai/resources/cognition/people/kevin-delgado): Founding Account Executive, TierZero AI (acquired by Cognition); now Account Director [1](https://cognition.com/blog/welcoming-tierzero) [2](https://www.linkedin.com/in/delgadokevin)
- [Jake Rachleff](https://www.autumn.ai/resources/cognition/people/jake-rachleff): Founding Software Engineer, TierZero; now Member of Technical Staff [1](https://cognition.com/blog/welcoming-tierzero) [2](https://www.linkedin.com/in/jakerachleff)

## What happened to TierZero

Cognition said it would bring the team's work on automations into Devin. [1](https://cognition.com/blog/welcoming-tierzero)

## Unconfirmed or disputed

- The brief mentioned "Devin Automations"; Cognition's TierZero post says only "into Devin".
- Price and terms were not disclosed.