# MLflow vs ZenML

**Leader by Vioscale score:** MLflow

| Attribute | MLflow | ZenML |
|---|---|---|
| **Vioscale score** | 76.2 (63% (medium)) | 56 (58% (medium)) |
| activity.commits_last_30d | 100 | 23 |
| adoption.dependent_repos | 5,089 | 44 |
| adoption.github_stars | 27,687 | 5,564 |
| adoption.package_downloads_weekly | 9,993,245 | - |
| deployment.options | `{"on_prem":true,"self_hosted":true}` | `{"cloud":true,"hybrid":true,"on_prem":true,"self_hosted":true}` |
| description.long | 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 | 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. |
| features.capabilities | `{"role":"platform","evaluation":true,"open_source":true,"managed_cloud":true,"model_serving":true,"pricing_model":"free_open_source","rate_limiting":true,"self_hostable":true,"multi_provider":true,"vpc_deployment":true,"otel_compatible":true,"deployment_model":"self-hosted","llm_observability":true,"prompt_management":true,"streaming_support":true,"architecture_model":"open_source_proxy","framework_agnostic":true,"experiment_tracking":true,"budget_spend_controls":true,"guardrails_moderation":"built-in","openai_compatible_api":true,"request_cost_observability":true,"mit_or_apache_permissive_oss_license":true,"organization_wide_cost_tracking_and_chargebacks":true}` | `{"role":"platform","evaluation":true,"managed_cloud":true,"model_serving":true,"self_hostable":true,"vpc_deployment":true,"llm_observability":true,"framework_agnostic":true,"experiment_tracking":true}` |
| integrations.count | 15 | 6 |
| integrations.list | `[{"name":"Databricks"},{"name":"AWS S3"},{"name":"Google Cloud Storage"},{"name":"Azure Storage"},{"name":"AzureML"},{"name":"Kubernetes"},{"name":"LangChain"},{"name":"Pydantic AI"},{"name":"Anthropic Claude"},{"name":"OpenAI"},{"name":"Google Gemini"},{"name":"SAP AI Core"},{"name":"JFrog"},{"name":"Aliyun"},{"name":"PostgreSQL"},{"name":"MySQL"},{"name":"MSSQL"},{"name":"Claude Code"},{"name":"OpenAI Codex"},{"name":"Gemini"},{"name":"Anthropic"},{"name":"Ollama"},{"name":"OpenClaw"},{"name":"Qwen Code"},{"name":"LiteLLM"},{"name":"Amazon S3"},{"name":"OpenTelemetry/OTLP"},{"name":"OpenAI-compatible endpoints"}]` | `[{"name":"Git"},{"name":"GitHub"},{"name":"GitLab"},{"name":"Kubernetes"},{"name":"Docker"},{"name":"Poetry"}]` |
| language.primary | Python | Python |
| license.spdx | Apache-2.0 | Apache-2.0 |
| platform.support | `{"cli":true,"web":true}` | `{"cli":true,"web":true}` |
| pricing | `{"type":"open_source","freeTier":true,"sourceUrl":"https://mlflow.org","retrievedAt":"2026-08-14T21:35:48.733Z"}` | `{"type":"open_source","plans":[{"free":true,"name":"Open Source","summary":"Free, self-hosted","features":["Unlimited pipeline executions","Full orchestration capabilities","Automatic logging and versioning","No vendor lock-in"],"description":"Self-hosted open-source framework with unlimited deployments","contactSales":false},{"free":false,"name":"Pro","summary":"Pricing not publicly available","features":["Managed cloud hosting","Unified dashboard and observability","Advanced security controls","Enterprise integrations"],"description":"Managed cloud platform with professional features","contactSales":false}],"summary":"Free open-source tier. Paid ZenML Pro tier (details require account login)","freeTier":true,"sourceUrl":"https://www.zenml.io/blog/crewai-pricing","retrievedAt":"2026-08-14T09:25:30.580Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | commercial | commercial |
| pricing.price_level | free | free |
| pricing.transparent | yes | no |
| release.cadence_days | 10 | 14 |
| release.history | `[{"url":"https://github.com/mlflow/mlflow/releases/tag/model-catalog/latest","date":"2026-04-06T05:49:14Z","type":"stable","version":"model-catalog/latest"},{"url":"https://github.com/mlflow/mlflow/releases/tag/v3.15.2","date":"2026-08-26T08:34:31Z","type":"stable","version":"v3.15.2"},{"url":"https://github.com/mlflow/mlflow/releases/tag/v3.15.1","date":"2026-08-03T11:09:58Z","type":"stable","version":"v3.15.1"},{"url":"https://github.com/mlflow/mlflow/releases/tag/v3.15.0","date":"2026-07-31T08:59:13Z","type":"stable","version":"v3.15.0"},{"url":"https://github.com/mlflow/mlflow/releases/tag/v3.14.0","date":"2026-06-17T08:50:33Z","type":"stable","version":"v3.14.0"},{"url":"https://github.com/mlflow/mlflow/releases/tag/v3.13.0","date":"2026-06-01T23:24:24Z","type":"stable","version":"v3.13.0"},{"url":"https://github.com/mlflow/mlflow/releases/tag/v3.13.0rc0","date":"2026-05-22T07:41:13Z","type":"prerelease","version":"v3.13.0rc0"},{"url":"https://github.com/mlflow/mlflow/releases/tag/ts/v0.2.0","date":"2026-05-15T04:09:03Z","type":"stable","version":"ts/v0.2.0"},{"url":"https://github.com/mlflow/mlflow/releases/tag/v3.12.0","date":"2026-05-05T23:48:58Z","type":"stable","version":"v3.12.0"},{"url":"https://github.com/mlflow/mlflow/releases/tag/v3.12.0rc0","date":"2026-04-28T23:25:56Z","type":"prerelease","version":"v3.12.0rc0"},{"url":"https://github.com/mlflow/mlflow/releases/tag/ts/v0.2.0-rc.1","date":"2026-04-13T09:42:04Z","type":"prerelease","version":"ts/v0.2.0-rc.1"},{"url":"https://github.com/mlflow/mlflow/releases/tag/v3.11.1","date":"2026-04-08T05:29:25Z","type":"stable","version":"v3.11.1"},{"url":"https://github.com/mlflow/mlflow/releases/tag/v3.11.0rc1","date":"2026-04-01T09:14:13Z","type":"prerelease","version":"v3.11.0rc1"},{"url":"https://github.com/mlflow/mlflow/releases/tag/v3.11.0rc0","date":"2026-03-16T14:02:42Z","type":"prerelease","version":"v3.11.0rc0"},{"url":"https://github.com/mlflow/mlflow/releases/tag/v3.10.1","date":"2026-03-05T14:47:14Z","type":"stable","version":"v3.10.1"},{"url":"https://github.com/mlflow/mlflow/releases/tag/v3.10.0","date":"2026-02-20T16:05:05Z","type":"stable","version":"v3.10.0"},{"url":"https://github.com/mlflow/mlflow/releases/tag/v3.10.0rc0","date":"2026-02-12T05:01:00Z","type":"prerelease","version":"v3.10.0rc0"},{"url":"https://github.com/mlflow/mlflow/releases/tag/v3.9.0","date":"2026-01-29T08:49:56Z","type":"stable","version":"v3.9.0"},{"url":"https://github.com/mlflow/mlflow/releases/tag/v3.9.0rc0","date":"2026-01-16T04:48:57Z","type":"prerelease","version":"v3.9.0rc0"},{"url":"https://github.com/mlflow/mlflow/releases/tag/v3.8.1","date":"2025-12-27T02:56:22Z","type":"stable","version":"v3.8.1"}]` | `[{"url":"https://github.com/zenml-io/zenml/releases/tag/0.96.3","date":"2026-08-07T13:24:25Z","type":"stable","version":"0.96.3"},{"url":"https://github.com/zenml-io/zenml/releases/tag/0.96.2","date":"2026-07-17T11:21:15Z","type":"stable","version":"0.96.2"},{"url":"https://github.com/zenml-io/zenml/releases/tag/0.96.1","date":"2026-07-02T20:38:13Z","type":"stable","version":"0.96.1"},{"url":"https://github.com/zenml-io/zenml/releases/tag/0.96.0","date":"2026-07-02T12:52:05Z","type":"stable","version":"0.96.0"},{"url":"https://github.com/zenml-io/zenml/releases/tag/0.95.1","date":"2026-06-18T12:24:26Z","type":"stable","version":"0.95.1"},{"url":"https://github.com/zenml-io/zenml/releases/tag/0.95.0","date":"2026-06-17T15:08:22Z","type":"stable","version":"0.95.0"},{"url":"https://github.com/zenml-io/zenml/releases/tag/0.94.6","date":"2026-06-02T10:57:18Z","type":"stable","version":"0.94.6"},{"url":"https://github.com/zenml-io/zenml/releases/tag/0.94.5","date":"2026-05-29T10:10:53Z","type":"stable","version":"0.94.5"},{"url":"https://github.com/zenml-io/zenml/releases/tag/0.94.4","date":"2026-05-12T15:13:19Z","type":"stable","version":"0.94.4"},{"url":"https://github.com/zenml-io/zenml/releases/tag/0.94.3","date":"2026-04-24T13:55:54Z","type":"stable","version":"0.94.3"},{"url":"https://github.com/zenml-io/zenml/releases/tag/0.94.2","date":"2026-04-08T15:00:24Z","type":"stable","version":"0.94.2"},{"url":"https://github.com/zenml-io/zenml/releases/tag/0.94.1","date":"2026-03-19T17:11:55Z","type":"stable","version":"0.94.1"},{"url":"https://github.com/zenml-io/zenml/releases/tag/0.94.0","date":"2026-03-04T18:22:00Z","type":"stable","version":"0.94.0"},{"url":"https://github.com/zenml-io/zenml/releases/tag/0.93.3","date":"2026-02-19T09:59:12Z","type":"stable","version":"0.93.3"},{"url":"https://github.com/zenml-io/zenml/releases/tag/0.93.2","date":"2026-01-29T22:30:18Z","type":"stable","version":"0.93.2"},{"url":"https://github.com/zenml-io/zenml/releases/tag/0.93.1","date":"2026-01-14T09:20:00Z","type":"stable","version":"0.93.1"},{"url":"https://github.com/zenml-io/zenml/releases/tag/0.93.0","date":"2025-12-16T09:19:32Z","type":"stable","version":"0.93.0"},{"url":"https://github.com/zenml-io/zenml/releases/tag/0.92.0","date":"2025-12-02T06:42:19Z","type":"stable","version":"0.92.0"},{"url":"https://github.com/zenml-io/zenml/releases/tag/0.91.2","date":"2025-11-19T06:31:25Z","type":"stable","version":"0.91.2"},{"url":"https://github.com/zenml-io/zenml/releases/tag/0.91.1","date":"2025-11-11T12:43:05Z","type":"stable","version":"0.91.1"}]` |
| reliability.status_page | - | yes |
| security.iso27001 | - | yes |
| security.scorecard | 5.5 | 6.8 |
| security.soc2 | - | yes |
| security.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"}` |

## Capabilities (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 | - | - |

*Source: Vioscale. Generated 2026-09-01T16:46:14.820Z. "-" = undocumented, not absent.*