Union.ai

Durable AI and ML orchestration built on Flyte 2

Hand-reviewed by the Toolglade team·Updated Aug 2026

mlops#mlops#orchestration#flyte#workflows

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About Union.ai

Union.ai is an MLOps orchestration platform built on Flyte 2, a durable, infrastructure-aware open-source runtime for AI and ML workflows authored in pure Python, with enterprise features on top.

Union.ai develops Flyte, a widely used open-source orchestration engine for machine learning and data workflows, and offers a managed enterprise platform on top of it. In August 2026 the company announced the general availability of Flyte 2, a ground-up rebuild designed for modern AI, ML, and agentic workloads. Flyte 2 introduces what Union.ai calls the first durable AI runtime in open source: it provides fault-tolerant, resource-aware execution that understands and adapts the infrastructure and compute beneath the code, so workflows recover automatically from failures and scale to production. Developers author workflows in real Python without learning a new DSL, testing and versioning locally before running at scale in the cloud. Union.ai's commercial platform is built on the same core engine and adds enterprise capabilities such as real-time inference, observability, single sign-on, and role-based access control. This combination targets ML and AI engineering teams that need production-grade, durable orchestration with the flexibility of open source underneath.

TL;DR

Union.ai is an MLOps orchestration platform built on the open-source Flyte engine, whose Flyte 2 release delivers a durable, infrastructure-aware runtime for AI and ML workflows in pure Python.

Company overview

Union.ai is the company behind Flyte, an open-source workflow orchestration engine widely used for machine learning and data pipelines. It offers a managed enterprise platform on the same core technology.

In 2026 Union.ai shipped Flyte 2 to general availability, rebuilding the engine for modern AI, ML, and agentic workloads and introducing a durable AI runtime in open source. This positions the company at the intersection of MLOps and agentic infrastructure.

Product features

Flyte 2 provides fault-tolerant, resource-aware execution that adapts infrastructure beneath the code, with workflows authored in pure Python and tested locally. It recovers automatically from failures and scales to production.

Union.ai's platform builds on this engine with real-time inference, observability, SSO, and RBAC for enterprise teams. Users can self-host Flyte or adopt the managed platform depending on their needs.

Target market

Union.ai targets ML engineers, data platform teams, and production ML organizations that need durable, governed orchestration. It is less suited to non-technical users, trivial jobs, or non-Python ML stacks.

Buyer personas

End users

ML and data engineers authoring and running pipelines.

Buyers

Heads of ML platform and data engineering choosing orchestration.

Key influencers

MLOps and infrastructure engineers evaluating durability and scale.

Ideal customer profile

Python-based ML organizations running production pipelines that need fault tolerance, scale, and enterprise governance.

Funding & performance

Verify current funding details with the vendor or public sources.

Pros & cons

Pros

Built on proven open-source Flyte
Flyte 2 durable, infrastructure-aware runtime
Author workflows in pure Python, no new DSL
Automatic recovery from failures
Enterprise features: observability, SSO, RBAC
Self-host or managed options

Cons

Python-centric workflow authoring
Orchestration concepts have a learning curve
Enterprise features are paid
Kubernetes knowledge helps for self-hosting
Overkill for very simple pipelines

Pricing plans

Flyte (Open Source)

$0 / month

Self-hosted orchestration
Durable Flyte 2 runtime
Pure-Python workflows

Union.ai Platform

Custom / month

Managed orchestration
Observability
Real-time inference
SSO and RBAC

Key features

API

Team collaboration

Self-hosted

Integrations

Python, Kubernetes, AWS, GCP, Azure

Input types

text

Output types

text

Best For

ML pipeline orchestration, Durable AI workflows, Production ML at scale

Compare key features

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Feature

Union.ai

ClearML

Unsloth

Pricing

Freemium

Free plan

Yes

Free trial

Yes

API

Yes

Self-hosted

Yes

Team support

Yes

Frequently asked questions

What is the relationship between Union.ai and Flyte?+

Union.ai develops the open-source Flyte engine and offers a managed enterprise platform built on the same core.

What is new in Flyte 2?+

Flyte 2 is a ground-up rebuild providing a durable, infrastructure-aware runtime that recovers from failures and scales AI/ML workloads, reaching GA in 2026.

Do I need to learn a new language?+

No. You author workflows in pure Python, testing and versioning locally before running at scale.

Can I self-host?+

Yes. Flyte is open source and self-hostable, while Union.ai adds managed enterprise capabilities.

What enterprise features does Union.ai add?+

It adds real-time inference, observability, single sign-on, and role-based access control on the same core engine.