GBrain
<!-- hacklab:yc-profile -- YC company profile A personal or team assistant that works while you sleep Like ChatGPT or Claude, but it runs in the cloud, remembers everything you…
About GBrain
YC company profile
A personal or team assistant that works while you sleep
Like ChatGPT or Claude, but it runs in the cloud, remembers everything you give it, and comes loaded with skills. Hand it a job tonight and read the answer in the morning. Use it on your own, or with your whole team.
- YC batch: Spring 2026
- Founded: 2026
- Team size: 3
- Location: San Francisco
- Country: US
- Status: Active
- Industry: B2B
- Stage: Early
- Tags: Workflow Automation, Automation, AI Assistant
- YC partner: Garry Tan
Founders
Brad Gessler — Founder/CEO
Cofounder & CEO Gbrain.io, P26. Cofounder & CTO of Poll Everywhere, S08. More at https://bradgessler.com/
Jamison Mercurio — Founder
Co-founder at Gbrain.io (P26). Previously co-founder and CEO of Mango Health (YC W24, AI mental health). Former Meta iOS and web engineer (Messenger Video Chat + Facebook News). Princeton CS Class of 2020.
How did your company get started? (i.e., How did the founders meet? How did you come up with the idea? How did you decide to be a founder?)
The three of us met building Garry's List. Every time we moved between AI tools we pasted the same API keys into the next one and explained the work all over again.
No existing tools were built for a team, either. We wanted one thing all three of us could prompt together, which is why gbrain.io is multiplayer.
Initially, building this meant the three of us in a room spinning up an agent harness, initializing memory; installing skills, manually setting up integrations to external tools, and pasting API keys in one at a time.
After copy-pasting that setup for a bunch of our friends, we built gbrain.io for the world: the same thing, in the cloud, that sets itself up in one click.
Source: Y Combinator · Retrieved 2026-11-02. Company information is self-reported on YC.