Refresh
Refresh is a YC Spring 2025 (P25) company. Based in San Francisco, CA, USA. Team of 5.
About Refresh
Summary
Refresh builds simulation environments and evaluation benchmarks for AI agents doing real computer work, including navigating enterprise software, writing code, and operating 3D animation tools like Blender. Its customers are AI labs and enterprises that need to benchmark and post-train frontier models on economically valuable tasks. The environments replace hand-crafted, manually scored test suites with high-fidelity software worlds that generate verifiable, automatically scored rewards for reinforcement learning and supervised fine-tuning.
Go-to-market
AI labs and enterprises use Refresh's environments both as objective evals to benchmark model performance and as training gyms to improve agents through reinforcement learning, with direct engagement driven by the technical teams building and post-training frontier models.
From the Y Combinator listing
Evals and environments for computer use and software engineering work
Building RL environments for the next generation of capabilities in frontier models
Facts
- B2B / B2B -> Engineering, Product and Design
- San Francisco, CA, USA
- 5
- Active
- Early
Founders (2)
Score every batch against your own thesis
GPAgent's sourcing agent reads every company in a batch, scores each one against your fund's thesis in a private workspace, and lines up the founders worth meeting before Demo Day. You decide who to contact. Your scores, notes, and pipeline never appear on these pages.
How Accelerator intelligence works