Comparison

Helicone 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
Helicone26
Ray67
Score
Vioscale score
Helicone26 / 100low · 28%updating
Ray67 / 100medium · 68%updating
Pricing
Free tier
Helicone
Ray
Model
Helicone
Price level
Helicone
Rayfree
Integrations
Count
Helicone1
Ray17
Reliability
Status page
Helicone
Ray
Adoption
Dependent repos
Helicone
Github stars
Helicone
Package downloads weekly
Helicone396
Activity
Commits last 30d
Helicone
Ray100
Release
Cadence days
Helicone
Ray18
History
Helicone
License
Spdx
Language
Primary
HeliconePython

Capabilities

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

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

What each one is

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

Helicone

A Python wrapper that automatically captures and logs all OpenAI API calls for monitoring and analysis.

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.

Helicone

Pricing not documented yet.

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
CLI
Helicone
Ray
Deployment
Cloud / SaaS
Helicone
Ray
Self-hosted
Helicone
Ray
On-premise
Helicone
Ray
Hybrid
Helicone
Ray

Integrations

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

Helicone

1 total
  • OpenAI
Independently observed

Ray

Leader
19 total
  • PyTorch
  • TensorFlow
  • 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.