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Cumulus Labs

Data & Infra · US · Early-stage
cumuluslabs.io

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.

Founded
2026
Headquarters
San Francisco, CA, USA
Team size
1–10
Stage
Early-stage
📊 Coliseo ratings
🏆 Overall 1477 Elo
1481
💰 Conviction
Provisional
1468
🔥 Momentum
Provisional
1481
🧲 Talent
Provisional
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