ZenML

What is ZenML?

ZenML is an AI engineering platform whose open-source core orchestrates AI pipelines on the infrastructure you choose. The vendor's site describes an always-on AI engineering team that watches your agents, finds what is broken and proves the fix works. It has three parts: the open-source ZenML framework, Kitaru for agent eval gaps, and the paid ZenML Pro platform.

Key capabilities of ZenML

• Pipeline orchestration: runs AI pipelines on your own infrastructure.
• Kitaru: finds gaps in agent evals using traces from Langfuse, LangSmith, Braintrust, Phoenix, MLflow and Logfire.
• Eval engineer: in ZenML Pro, finds where evals miss problems and writes new checks.
• Reliability engineer: diagnoses failures and tests fixes against current runs.
• Cost engineer: finds waste and tests cheaper models.
• Flexible deployment: runs in ZenML's cloud, your cloud or air-gapped environments.

How ZenML works

You define pipelines in Python and run them on the infrastructure of your choice. ZenML Pro adds a hosted dashboard, schedules and alerts, unlimited seats and the AI engineers that analyze traces to improve evals, reliability and cost. Traces stay where they are and are accessed through keys you can revoke.

Who uses ZenML?

ML and AI engineering teams use it to productionize pipelines and agents without locking into one cloud. It supports eval tooling such as pytest, promptfoo and DeepEval, and agent frameworks including the Claude Agent SDK, OpenAI Agents SDK, PydanticAI, LangGraph, Vercel AI SDK and Mastra. The vendor lists SOC 2 Type II and ISO 27001.

ZenML pricing

Kitaru and ZenML are free and Apache 2.0 licensed. ZenML Pro starts at $39 per month, with a 14-day free trial. Further plan prices are on the vendor's pricing page.

ZenML alternatives

Hopsworks centers on a feature store for ML, while ZenML focuses on pipeline orchestration and agent reliability. Evidently AI specializes in ML and LLM evaluation and monitoring, which overlaps with ZenML's eval work but is not a pipeline orchestrator. DataRobot is a commercial end-to-end AI platform with automated modeling, a managed alternative to ZenML's code-first open-source approach.