Union.ai develops AI development infrastructure designed to help engineering teams build dynamic, durable AI workflows and agents while eliminating the toil of maintaining brittle pipelines. It is the company behind Flyte, the widely adopted open-source orchestration engine for data and ML workflows, which has surpassed 80 million downloads.
The platform targets the gap between experimentation and production: teams can author reproducible, scalable pipelines for data engineering, model training, and increasingly agentic AI workloads, with strong versioning, caching, and resource management. Union.ai released Flyte 2 as the next generation of its orchestration tooling.
In February 2026, Union.ai completed a $38.1M Series A (including a previously announced $19.1M tranche) led by existing investor NEA, with participation from Nava Ventures and new investor Mozilla Ventures. The funding supports building infrastructure that helps teams scale from prototype to production faster.
Union.ai serves ML platform teams, data engineers, and AI application builders who need durable, observable, and cost-efficient workflows. Its open-source roots give it a strong adoption funnel among engineering organizations.
The Bellevue/Seattle-area company sits in the emerging 'AI development infrastructure' category, bridging classic MLOps and data engineering with the new demands of agentic AI productionization.