OpenBuilder
OpenBuilder is a YC Fall 2025 (F25) company. Based in San Francisco, CA, USA. Team of 3.
About OpenBuilder
Summary
OpenBuilder gives non-technical founders a no-code, AI-assisted platform to build and ship software without writing code. It replaces the stop-start cycle of conventional vibe-coding tools by offering unlimited build credits, active unblocking when users get stuck, and full access to the underlying codebase from the start. The target user takes an idea all the way to a production-ready product without handing off to engineers.
Business model
Unlimited build credits included, replacing per-credit billing.
Go-to-market
Non-technical builders adopt the platform directly; the open-source codebase and unlimited-credit model are designed to drive self-serve adoption.
From the Y Combinator listing
The vibe coding platform where builders actually finish.
OpenBuilder is the vibe coding platform that helps non-technical builders take their ideas to production. Instead of paying for credits and getting stuck. OpenBuilder offers unlimited build credits, gets you unstuck and ready for production. It's also an open platform where you have access to all of your code from day one.
Facts
- B2B / B2B -> Engineering, Product and Design
- San Francisco, CA, USA
- 3
- Active
- Early
Founders (2)
- James Jiang
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