Comparison

Langfuse vs ReOpenly

No clear leader: Langfuse (66.4) and ReOpenly (65.5) are within the 5-point margin; treat as a tie. The attribute-by-attribute breakdown below, with a source and date on every value, is the honest way to compare them.

Machine formatsMarkdownJSONGraphQLMarkdown is open. JSON and GraphQL need a free key.
Langfuse66
ReOpenly66
Score
vioscaleAI score
Langfuse66 / 100medium · 56%
ReOpenly66 / 100low · 40%
Pricing
Free tier
Langfuse✓
ReOpenly✓
Model
Langfusefreemium
ReOpenlyfreemium
Price level
Langfusefree
ReOpenlylow
Starting price
Langfuse–
ReOpenly$0.03
Transparent
Langfuse✗
ReOpenly✓
Integrations
Count
Langfuse100
ReOpenly3
Security
Gdpr
Langfuse✓
ReOpenly–
Hipaa
Langfuse✓
ReOpenly–
Iso27001
Langfuse✓
ReOpenly–
Soc2
Langfuse✓
ReOpenly–
Reliability
Status page
Langfuse✓
ReOpenly–
Adoption
Dependent repos
Langfuse0
ReOpenly–
Github stars
Langfuse35,781
ReOpenly–
Package downloads weekly
Langfuse6,493,381
ReOpenly–
Activity
Commits last 30d
Langfuse100
ReOpenly–
Release
History
Langfuse20 items
ReOpenly–
License
Spdx
LangfuseMIT
ReOpenly–
Language
Primary
LangfuseTypeScript
ReOpenly–
Content
Faq
Langfuse7 items
ReOpenly6 items

Capabilities

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

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

What each one is

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

Langfuse

A comprehensive observability and development platform that combines tracing, prompt management, evaluation, and experimentation, enabling teams to understand LLM behavior in production and ship improved applications with confidence

Independently observed

ReOpenly

ReOpenly is an end-to-end platform that handles the infrastructure and training pipeline for fine-tuning open-source models on your dataset, then serving them via hosted API or downloading the weights for self-deployment. Smaller models tuned to specific tasks achieve comparable accuracy to large generalist models at significantly lower cost.

Independently observed

Pricing

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

Langfuse

SubscriptionFree tier

Multiple tiers available; specific pricing not shown in provided text

  • HobbyFree
  • Core-
  • Enterprise-
as of verify ↗

ReOpenly

from $0.03/GPU/minuteUsage-basedFree tier

Usage-based: $0.03 per GPU minute. New accounts receive welcome credits.

  • Pay-as-you-go$0.03/GPU minute (training and inference)
    • Fine-tune small open models
    • Hosted inference
    • OpenAI-compatible API
    • Auto-save dataset curation
    • Real-time training loss visualization
as of verify ↗

Platform & deployment

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

Platforms
Web
Langfuse✓
ReOpenly✓
Deployment
Cloud / SaaS
Langfuse✓
ReOpenly✓
Self-hosted
Langfuse✓
ReOpenly✗

Integrations

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

In common (2)
  • LangChain
  • OpenAI

Langfuse

24 total - 22 not shared
  • Vercel AI SDK
  • LiteLLM
  • Pydantic AI
  • Google ADK
  • CrewAI
  • LiveKit
  • Haystack
  • LlamaIndex
  • Anthropic
  • Amazon Bedrock
  • Azure OpenAI
  • Mistral AI
  • Google Gemini
  • xAI
  • vLLM
  • Groq
  • OpenAI SDK
  • Cohere
  • Elasticsearch
  • OpenSearch
  • Hugging Face
  • OpenTelemetry
Independently observed

ReOpenly

3 total - 1 not shared
  • n8n
Independently observed
Still deciding?

Langfuse or ReOpenly: which one depends on you

A composite score cannot know your constraints. Describe them and both get re-weighted against what you actually need, with the evidence behind every position.

Free to run, no account needed to start. How the evaluation works

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