B2B

Sublingual

Reinforcement Learning for AI Agents

YC Batch:

YC Batch:

Winter 2025

Baiqing (Andy) L.

Co-Founder & CTO

Kasey Zhang — Co-Founder & CEO background in data science early-stage VC and gaming startups; leads RL/product and customer discovery. Baiqing (Andy) L. — Co-Founder & CTO experienced data and ML infrastructure engineer (formerly at ByteDance/TikTok) focused on scalable infrastructure and recommendation systems.

Total Raised

$500K

Stage

Early

Latest Round

pre-seed

Industry

B2B

About

Osmosis helps companies use reinforcement learning to fine-tune open source models that outperform foundation models.

Key Investors

Y Combinator

Company Snapshot

Employee Count

6

Status

Active

Former Names

Gulp

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