MLServer vs ZenML

MLServer vs ZenML
Fact	MLServer	ZenML
Language	Python	Python
Licence	Apache-2.0	Apache-2.0
Stars	900	5.6k
Latest	1.7.1	0.97.0
Last push	2026-10-05	2026-10-06
Release cadence	about 95 days between releases	about 20 days between releases
Active contributors	0 commit authors on the default branch in the last 90 days	12 commit authors on the default branch in the last 90 days
Flags	none	none

How they relate

Both replace Amazon SageMaker. Alternatives to Amazon SageMaker →
PartialMLServerA Python inference server speaking the V2 inference protocol.
PartialZenMLPortable pipelines that run on your own orchestrators and clouds, with a model registry.

1.7.12025-06-06Set a lower bound for mlflow in mlserver-mlflow
1.7.02025-04-11MLServer has now support for Python 3.11 and 3.12 by @shivakrishnaah in (#1951)
1.6.12024-09-10MLServer now offers an option to use pre-existing Python environments by specifying a path to the environment to be use…
1.6.02024-06-26MLServer supports Pydantic V2.
1.5.02024-03-05Update CHANGELOG

0.97.02026-09-23Resource pools have been reworked to use ZenML Pro Resource Manager v2, and the old OSS resource-pool control-plane obj…
0.96.42026-09-04Webhook triggers for pipeline snapshots: ZenML now supports first-class webhook-driven automation for secure, project-s…
0.96.32026-08-07Multi-pod Kubernetes step operator jobs: Command steps can now run across multiple Kubernetes pods with the Kubernetes…
0.96.22026-07-17Artifact version deletion via the API is broken in this release and will be fixed in 0.96.3. Artifact versions can stil…
0.96.12026-07-02Run pipelines and steps over SSH: ZenML now includes an SSH orchestrator and SSH step operator for executing workloads…

unsigned The latest release, 1.7.1, carries no signature GitHub could verify.

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✓ signed The latest release, 0.97.0, carries a signature GitHub verified.

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