YCS26ยท AIBelvedir
The custom AI model factory.
Founders
- Zachary YuFounder/CEO
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Adjacent
Overlapping tags, a different niche.
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About Belvedir
Belvedir makes it cheap and easy for anyone to make custom AI models. We autonomously collect your data via trace SDK / app MCP / CUA agents and autonomously train custom models + harnesses + routers, privately deploy them, and recursively improve them as they are used. Our customers have seen 10x reductions in inference costs and 2x increases on benchmark scores. Custom AI models are going to win. Belvedir is the infrastructure needed to make trillions of them.
San Francisco, CA, USA
Belvedir: questions
Which YC batch was Belvedir in?
Belvedir was in Y Combinator's Summer 2026 batch (S26).
Is Belvedir still active?
Y Combinator lists Belvedir as active.
Who founded Belvedir?
Belvedir's founders, as listed on its YC page: Zachary Yu (Founder/CEO).
Where is Belvedir based?
Belvedir lists San Francisco, CA, USA as its location on YC's directory.
Not affiliated with Y Combinator. From YC's public directory. Logos via logo.dev; trademarks belong to their owners.