Osmosis
Osmosis is a YC Winter 2025 (W25) company. Team of 6.
About Osmosis
Summary
Osmosis builds a forward-deployed reinforcement learning platform that fine-tunes open-source models for specific enterprise tasks, replacing the need for companies to use general-purpose foundation models. Engineering teams use it to train task-specific models for document extraction, AI agent tool use, and code generation, with Osmosis handling the full post-training workflow from reward function design to model serving. The platform monitors production performance and triggers automated retraining runs, keeping models current without manual intervention.
Business model
Omitted: pricing structure not disclosed in sources.
Go-to-market
B2B, sales-led: companies book a demo and Osmosis works hands-on with their engineering teams throughout deployment.
From the Y Combinator listing
Reinforcement Learning for AI Agents
Osmosis helps companies use reinforcement learning to fine-tune open source models that outperform foundation models.
Facts
- B2B / B2B
- 6
- Active
- Early
Founders (2)
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