Cumulus Labs
The Fastest Multimodal Inference OS
Founders
- Veer ShahFounder/CEO
Same space
Competitors
Closest in what they build, same category.
Adjacent
Overlapping tags, a different niche.
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OneTriangleS26The cheapest, fastest inference cloudShared: inference, fastestActive
ShadeformS23The GPU Cloud MarketplaceShared: inference, gpu, unifiedActive
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Outside YC
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About Cumulus Labs
Cumulus Labs lets engineering teams ship AI in production without needing a dedicated ML platform team. Right now, companies building AI products are forced to stitch together separate vendors for routing, observability, evaluation, fine-tuning, and inference. This fragmented approach is brittle, expensive, and is a common reason enterprises fail with AI. We replace that entire stack with a single unified platform. Developers can keep their existing code while instantly upgrading to a unified platform that handles routing, semantic caching, continuous shadow evaluation, simulated data, and one-click fine-tuning. Behind the platform is Ion, our proprietary inference engine running on a custom NVIDIA Grace GPU fleet. Ion uses in-house custom GPU kernels to deliver 30 to 50 percent more throughput than standard vLLM or SGLang, giving our customers SOTA inference economics.
San Francisco, CA, USA
Cumulus Labs: questions
Which YC batch was Cumulus Labs in?
Cumulus Labs was in Y Combinator's Winter 2026 batch (W26).
Is Cumulus Labs still active?
Y Combinator lists Cumulus Labs as active.
Who founded Cumulus Labs?
Cumulus Labs's founders, as listed on its YC page: Veer Shah (Founder/CEO).
Where is Cumulus Labs based?
Cumulus Labs 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.