Comparison

Kubeflow vs Ray

On the evidence we track, Ray leads this comparison with a composite score of 67/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Machine formatsJSONMarkdownGraphQLor send Accept: application/json
Kubeflow47
Ray67
Score
Vioscale score
Kubeflow47 / 100low · 44%
Ray67 / 100medium · 68%
Pricing
Free tier
Kubeflow
Ray
Model
Price level
Kubeflowfree
Rayfree
Transparent
Kubeflow
Ray
Integrations
Count
Kubeflow7
Ray17
Reliability
Status page
Kubeflow
Ray
Adoption
Dependent repos
Kubeflow40
Github stars
Kubeflow15,832
Package downloads weekly
Kubeflow
Activity
Commits last 30d
Kubeflow3
Ray100
Release
Cadence days
Kubeflow25
Ray18
History
Kubeflow20 items
License
Spdx
Language
Primary
Kubeflow

Capabilities

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

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

What each one is

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

Kubeflow

Kubeflow is an open-source platform that provides composable, Kubernetes-native tools for the entire AI lifecycle, including model training, hyperparameter tuning, pipeline orchestration, model management, and notebook environments. It enables AI teams to build scalable ML systems on any Kubernetes infrastructure.

Independently observed

Ray

Leader

Ray is an open-source unified framework for scaling Python and machine learning applications across any infrastructure. It provides distributed compute primitives, specialized AI libraries for data processing, model training, tuning, and serving, with seamless scaling from development environments to large clusters.

Independently observed

Pricing

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

Kubeflow

Open sourceFree tier
as of verify ↗

Ray

Leader
FreeFree tier
as of verify ↗

Platform & deployment

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

Platforms
Web
Kubeflow
Ray
CLI
Kubeflow
Ray
Deployment
Cloud / SaaS
Kubeflow
Ray
Self-hosted
Kubeflow
Ray
On-premise
Kubeflow
Ray
Hybrid
Kubeflow
Ray

Integrations

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

In common (2)
  • PyTorch
  • TensorFlow

Kubeflow

9 total - 7 not shared
  • JAX
  • XGBoost
  • Spark
  • HuggingFace
  • DeepSpeed
  • Megatron
  • MLX
Independently observed

Ray

Leader
19 total - 17 not shared
  • AIBrix
  • AReaL
  • Cosmos Curate
  • Daft
  • Data-Juicer
  • DeltaCAT
  • Modin
  • NeMo Curator
  • NeMo-RL
  • OpenRLHF
  • RayDP
  • ROLL
  • SkyRL
  • SLIME
  • Syftr
  • verl
  • vLLM
Independently observed

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

Kubeflow vs Ray: an evidence-based comparison · Vioscale