Founded in 2020, Union.ai has evolved from the enterprise platform for the Flyte orchestrator into a full-stack AI development environment covering orchestration, model training, inference, and observability. Its flagship open-source projects include Flyte, now at over 80 million downloads, and Pandera, a data validation framework topping 100 million downloads. The company reports that more than 3,500 organizations rely on its infrastructure to build and deploy AI systems. By unifying data, models, and compute, Union.ai aims to eliminate the brittleness of legacy pipelines and boost developer velocity in AI workflows. Recent plans focus on accelerating product development, expanding engineering and field teams, and deepening investment in its open-source community. The Bellevue-based firm’s momentum is reinforced by surging demand for AI orchestration solutions and its clear commercial traction tied to open-source adoption. Its $38.1 million Series A financing bolsters the balance sheet for these growth initiatives.

Total raised

$67M

Funding rounds

3

Latest round

Series A

Latest activity

Feb 2026