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Belvedir

YC S26

San Francisco, US · Founded 2026 · 2 employees · 11 known investors

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Belvedir provides a platform for training and deploying custom AI models with private hosting and continual learning capabilities. The platform enables companies to collect production data, create training datasets, fine-tune models using reinforcement learning, and improve AI systems in feedback loops controlled by the customer.

Also known as Fractal Machine Research, Inc. · Fractal · Fractal Machine Research · Fractal Research · Fractal, Fractal Research, Fractal Machine Research, Belvedir, Fractal Machine Research

AI & Machine LearningCloud ComputingEnterprise SoftwareMachine LearningReinforcement LearningAIUnited States of AmericaAmerica / Canada

Founders & leadership· Y Combinator alumni (S26)

Belvedir was founded in 2026 by Zachary Yu.

ZYZachary Yu
Zachary YuFounder & CEOFounder of Belvedir, a platform for training and deploying custom AI models with private hosting and continual learning capabilities.

Investors · 11

Vela Partnerslisted by Vela PartnersSan Francisco · $100K – $500K
Y Combinatorlisted by Y CombinatorSan Francisco · $500K

How we know: the Y Combinator directory · open dataset · 5k.vc investor directory · Not right? Tell us

Blast.Clubreported$5.5M

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Buckley Ventures Management Company LlcreportedNew York · $300K

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Fjor FoundersreportedLos Angeles

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Founders' Co-opreportedSeattle · $10K – $250K

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Lyra Capital Pty LtdreportedSydney

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Palm Drive CapitalreportedNew York · $500K – $5M

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RobinhoodreportedMenlo Park

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Rock Yard VenturesreportedBuena Park · $10K – $100K

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Related companies · 5

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NuMindNuMind provides a platform for building custom natural language processing models with applications in tasks like resume-to-job matching; the platform uses large language models to accelerate development workflows for data scientists, engineers, and analysts.
AtmoAtmo develops AI-powered weather forecasting models that process real-time satellite, ground station, radar, and ocean buoy data to deliver forecasts at high resolution and speed. The company serves governments, militaries, and industries with improved weather prediction accuracy and detail for operational decision-making.

Companies working in the same space as Belvedir.

Legal entities · 1

corporate structure
Fractal Machine Research, Inc.

Frequently asked questions

What does Belvedir do?
Belvedir provides a platform for training and deploying custom AI models with private hosting and continual learning capabilities. The platform enables companies to collect production data, create training datasets, fine-tune models using reinforcement learning, and improve AI systems in feedback loops controlled by the customer.
Who founded Belvedir?
Belvedir was founded by Zachary Yu in 2026.
Who are Belvedir's investors?
Belvedir's investors include Eight Capital, Vela Partners, Y Combinator, Blast.Club, Buckley Ventures Management Company Llc, Fjor Founders, Founders' Co-op, Lyra Capital Pty Ltd and 3 more.
Where is Belvedir headquartered?
Belvedir is headquartered in San Francisco, US.