Comparison

MLflow vs ZenML

On the evidence we track, MLflow leads this comparison with a composite score of 76/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

MLflow full profile →ZenML full profile →

Machine formatsJSON Markdown GraphQLor send Accept: application/json

★MLflow76

ZenML56

Attribute comparison across 2 tools
Attribute	MLflowLeader	ZenML
Vioscale score	76 / 100medium · 63%	56 / 100medium · 58%
Pricing
Free tierpricing.free_tier	✓	✓
Modelpricing.model	commercial	commercial
Price levelpricing.price_level	free	free
Transparentpricing.transparent	✓	✗
Integrations
Countintegrations.count	15	6
Security
Iso27001security.iso27001	-	✓
Scorecardsecurity.scorecard	5.5	6.8
Soc2security.soc2	-	✓
Vulnerabilitiessecurity.vulnerabilities	Count: 80 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=mlflow&per_page=100 · Last 12m: 27 · Max severity: CRITICAL	Count: 14 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=zenml&per_page=100 · Last 12m: 1 · Max severity: CRITICAL
Reliability
Status pagereliability.status_page	-	✓
Adoption
Dependent reposadoption.dependent_repos	5,089	44
Github starsadoption.github_stars	27,687	5,564
Package downloads weeklyadoption.package_downloads_weekly	9,993,245	-
Activity
Commits last 30dactivity.commits_last_30d	100	23
Release
Cadence daysrelease.cadence_days	10	14
Historyrelease.history	20 items	20 items
License
Spdxlicense.spdx	Apache-2.0	Apache-2.0
Language
Primarylanguage.primary	Python	Python

Score

Vioscale score

MLflow76 / 100medium · 63%

ZenML56 / 100medium · 58%

Pricing

Free tier

MLflow✓

ZenML✓

Model

MLflowcommercial

ZenMLcommercial

Price level

MLflowfree

ZenMLfree

Transparent

MLflow✓

ZenML✗

Integrations

Count

MLflow15

ZenML6

Security

Iso27001

MLflow–

ZenML✓

Scorecard

MLflow5.5

ZenML6.8

Soc2

MLflow–

ZenML✓

Vulnerabilities

MLflowCount: 80 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=mlflow&per_page=100 · Last 12m: 27 · Max severity: CRITICAL

ZenMLCount: 14 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=zenml&per_page=100 · Last 12m: 1 · Max severity: CRITICAL

Reliability

Status page

MLflow–

ZenML✓

Adoption

Dependent repos

MLflow5,089

ZenML44

Github stars

MLflow27,687

ZenML5,564

Package downloads weekly

MLflow9,993,245

ZenML–

Activity

Commits last 30d

MLflow100

ZenML23

Release

Cadence days

MLflow10

ZenML14

History

MLflow20 items

ZenML20 items

License

Spdx

MLflowApache-2.0

ZenMLApache-2.0

Language

Primary

MLflowPython

ZenMLPython

Capabilities

Feature-by-feature on the axes that matter for mlops & llmops tools. “-” means undocumented, not absent.

Capability comparison for MLOps & LLMOps Tools
Capability	MLflow	ZenML
Core
Tool role	End-to-end ML platform	End-to-end ML platform
Deployment
Self-hostable / OSS core	✓	✓
Managed cloud available	✓	✓
On-prem / VPC deployment	✓	✓
Observability
LLM tracing / observability	✓	✓
Evaluation (offline / LLM-judge / human)	✓	✓
Dev
Prompt management + versioning	✓	-
Tracking
Experiment tracking / model registry	✓	✓
Serving
Model serving / inference endpoint	✓	✓
Interop
OpenTelemetry / OpenLLMetry compatible	✓	-
Framework-agnostic	✓	✓
Gateway
Multi-provider model support	✓	-
Data
No-train-on-customer-data guarantee	-	-

Core

Tool role

MLflowEnd-to-end ML platform

ZenMLEnd-to-end ML platform

Deployment

Self-hostable / OSS core

MLflow✓

ZenML✓

Managed cloud available

MLflow✓

ZenML✓

On-prem / VPC deployment

MLflow✓

ZenML✓

Observability

LLM tracing / observability

MLflow✓

ZenML✓

Evaluation (offline / LLM-judge / human)

MLflow✓

ZenML✓

Dev

Prompt management + versioning

MLflow✓

ZenML-

Tracking

Experiment tracking / model registry

MLflow✓

ZenML✓

Serving

Model serving / inference endpoint

MLflow✓

ZenML✓

Interop

OpenTelemetry / OpenLLMetry compatible

MLflow✓

ZenML-

Framework-agnostic

MLflow✓

ZenML✓

Gateway

Multi-provider model support

MLflow✓

ZenML-

Data

No-train-on-customer-data guarantee

MLflow-

ZenML-

What each one is

The product in its own terms, so the numbers below have context.

MLflow

Leader

A comprehensive, open-source platform that provides experiment tracking, model registry, LLM tracing, prompt management, and deployment capabilities across the complete machine learning and AI lifecycle

Independently observed

ZenML

An MLOps framework that provides reproducible machine learning pipelines with automatic logging, versioning, and observability. Includes agent runtime capabilities (Kitaru) for building replayable agent workflows, deployable on your existing infrastructure without vendor lock-in.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

MLflow

Leader

Open sourceFree tier

as of 2026-08-14verify ↗

ZenML

Open sourceFree tier

Free open-source tier. Paid ZenML Pro tier (details require account login)

Open SourceFree
- Unlimited pipeline executions
- Full orchestration capabilities
- Automatic logging and versioning
- No vendor lock-in
ProPricing not publicly available
- Managed cloud hosting
- Unified dashboard and observability
- Advanced security controls
- Enterprise integrations

as of 2026-08-14verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platform and deployment support comparison
Supports	MLflow	ZenML
WebPlatforms	✓	✓
CLIPlatforms	✓	✓
Cloud / SaaSDeployment	✗	✓
Self-hostedDeployment	✓	✓
On-premiseDeployment	✓	✓
HybridDeployment	✗	✓

Platforms

Web

MLflow✓

ZenML✓

CLI

MLflow✓

ZenML✓

Deployment

Cloud / SaaS

MLflow✗

ZenML✓

Self-hosted

MLflow✓

ZenML✓

On-premise

MLflow✓

ZenML✓

Hybrid

MLflow✗

ZenML✓

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

In common (1)

Kubernetes

MLflow

Leader

28 total - 27 not shared

Databricks
AWS S3
Google Cloud Storage
Azure Storage
AzureML
LangChain
Pydantic AI
Anthropic Claude
OpenAI
Google Gemini
SAP AI Core
JFrog
Aliyun
PostgreSQL
MySQL
MSSQL
Claude Code
OpenAI Codex
Gemini
Anthropic
Ollama
OpenClaw
Qwen Code
LiteLLM
+3 more

Independently observed

ZenML

6 total - 5 not shared

Git
GitHub
GitLab
Docker
Poetry

Independently observed

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.