# Metaflow vs MLflow

**Leader by Vioscale score:** MLflow

| Attribute | Metaflow | MLflow |
|---|---|---|
| **Vioscale score** | 58.2 (66% (medium)) | 76.2 (63% (medium)) |
| activity.commits_last_30d | 18 | 100 |
| adoption.dependent_repos | 106 | 5,089 |
| adoption.github_stars | 10,244 | 27,687 |
| adoption.package_downloads_weekly | 193,305 | 9,993,245 |
| deployment.options | `{"cloud":true,"on_prem":true,"self_hosted":true}` | `{"on_prem":true,"self_hosted":true}` |
| description.long | An open-source tool that enables data scientists and engineers to move from local experimentation to scalable production systems, with features for tracking experiments, versioning data and models, and orchestrating compute across multiple cloud platforms or self-hosted infrastructure. | 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 |
| features.capabilities | `{"role":"framework","managed_cloud":true,"self_hostable":true,"multi_provider":true,"vpc_deployment":true,"otel_compatible":true,"framework_agnostic":true,"experiment_tracking":true}` | `{"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}` |
| integrations.count | 3 | 15 |
| integrations.list | `[{"name":"AWS"},{"name":"Azure"},{"name":"Google Cloud"}]` | `[{"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"}]` |
| language.primary | Python | Python |
| license.spdx | Apache-2.0 | Apache-2.0 |
| market.availability | `{"hqCountry":"US","primaryMarkets":["US"],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | - |
| platform.support | `{"cli":true}` | `{"cli":true,"web":true}` |
| pricing | `{"type":"open_source","freeTier":true,"sourceUrl":"https://metaflow.org","retrievedAt":"2026-08-14T09:21:30.422Z"}` | `{"type":"open_source","freeTier":true,"sourceUrl":"https://mlflow.org","retrievedAt":"2026-08-14T21:35:48.733Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | open_source | commercial |
| pricing.price_level | free | free |
| pricing.transparent | - | yes |
| release.cadence_days | 5 | 10 |
| release.history | `[{"url":"https://github.com/Netflix/metaflow/releases/tag/2.19.38","date":"2026-08-18T00:34:39Z","type":"stable","version":"2.19.38"},{"url":"https://github.com/Netflix/metaflow/releases/tag/2.19.37","date":"2026-08-11T17:15:05Z","type":"stable","version":"2.19.37"},{"url":"https://github.com/Netflix/metaflow/releases/tag/2.19.36","date":"2026-08-05T18:15:13Z","type":"stable","version":"2.19.36"},{"url":"https://github.com/Netflix/metaflow/releases/tag/2.19.35","date":"2026-06-24T22:08:22Z","type":"stable","version":"2.19.35"},{"url":"https://github.com/Netflix/metaflow/releases/tag/2.19.34","date":"2026-06-18T12:37:53Z","type":"stable","version":"2.19.34"},{"url":"https://github.com/Netflix/metaflow/releases/tag/2.19.33","date":"2026-06-09T19:37:12Z","type":"stable","version":"2.19.33"},{"url":"https://github.com/Netflix/metaflow/releases/tag/2.19.32","date":"2026-06-03T21:24:38Z","type":"stable","version":"2.19.32"},{"url":"https://github.com/Netflix/metaflow/releases/tag/2.19.31","date":"2026-06-01T01:48:44Z","type":"stable","version":"2.19.31"},{"url":"https://github.com/Netflix/metaflow/releases/tag/2.19.30","date":"2026-05-29T08:38:51Z","type":"stable","version":"2.19.30"},{"url":"https://github.com/Netflix/metaflow/releases/tag/2.19.29","date":"2026-05-11T23:37:35Z","type":"stable","version":"2.19.29"},{"url":"https://github.com/Netflix/metaflow/releases/tag/2.19.28","date":"2026-05-07T16:37:54Z","type":"stable","version":"2.19.28"},{"url":"https://github.com/Netflix/metaflow/releases/tag/2.19.27","date":"2026-05-06T15:44:03Z","type":"stable","version":"2.19.27"},{"url":"https://github.com/Netflix/metaflow/releases/tag/2.19.26","date":"2026-05-05T19:10:56Z","type":"stable","version":"2.19.26"},{"url":"https://github.com/Netflix/metaflow/releases/tag/2.19.25","date":"2026-05-05T17:20:26Z","type":"stable","version":"2.19.25"},{"url":"https://github.com/Netflix/metaflow/releases/tag/2.19.24","date":"2026-05-01T18:36:35Z","type":"stable","version":"2.19.24"},{"url":"https://github.com/Netflix/metaflow/releases/tag/2.19.23","date":"2026-04-28T04:04:38Z","type":"stable","version":"2.19.23"},{"url":"https://github.com/Netflix/metaflow/releases/tag/2.19.22","date":"2026-03-20T21:38:19Z","type":"stable","version":"2.19.22"},{"url":"https://github.com/Netflix/metaflow/releases/tag/2.19.21","date":"2026-03-11T23:56:51Z","type":"stable","version":"2.19.21"},{"url":"https://github.com/Netflix/metaflow/releases/tag/2.19.20","date":"2026-02-26T20:51:42Z","type":"stable","version":"2.19.20"},{"url":"https://github.com/Netflix/metaflow/releases/tag/2.19.19","date":"2026-02-09T13:28:43Z","type":"stable","version":"2.19.19"}]` | `[{"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"}]` |
| reliability.status_page | yes | - |
| security.scorecard | 7 | 5.5 |
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=metaflow&per_page=100","last_12m":0,"max_severity":null}` | `{"count":80,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=mlflow&per_page=100","last_12m":27,"max_severity":"CRITICAL"}` |

## Capabilities (MLOps & LLMOps Tools)

| Capability | Metaflow | MLflow |
|---|:--:|:--:|
| **Core** |  |  |
| Tool role | Agent / RAG framework | 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 2026-09-01T14:44:14.225Z. "-" = undocumented, not absent.*