vioscaleAI
Comparison

Langfuse vs vLLM

No clear leader: Langfuse (66.4) and vLLM (63.5) 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.

Langfuse full profile →vLLM full profile →
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Langfuse66
vLLM64
Score
vioscaleAI score
Langfuse66 / 100medium · 56%
vLLM64 / 100medium · 58%
Pricing
Free tier
Langfuse✓
vLLM✓
Model
Price level
Langfusefree
vLLMfree
Transparent
Langfuse✗
vLLM✓
Integrations
Count
Langfuse100
vLLM29
Security
Gdpr
Langfuse✓
vLLM–
Hipaa
Langfuse✓
vLLM–
Iso27001
Langfuse✓
vLLM–
Soc2
Langfuse✓
vLLM–
Trust center
Vulnerabilities
Reliability
Status page
Langfuse✓
vLLM–
Adoption
Dependent repos
Langfuse0
vLLM5
Github stars
Langfuse35,781
vLLM93,797
Package downloads weekly
Langfuse6,493,381
vLLM463,948
Activity
Commits last 30d
Langfuse100
vLLM100
Release
Cadence days
Langfuse–
vLLM12
History
Langfuse20 items
vLLM20 items
License
Spdx
LangfuseMIT
vLLMApache-2.0
Language
Primary
LangfuseTypeScript
vLLMPython
Market
Availability
Content
Faq
Langfuse7 items
vLLM6 items

Capabilities

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

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

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

vLLM

A production-grade inference engine designed for efficient serving of large language models with support for distributed deployment, GPU acceleration, and multi-model endpoints.

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 ↗

vLLM

Open sourceFree tier
as of verify ↗

Platform & deployment

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

Platforms
Web
Langfuse✓
vLLM✗
Linux
Langfuse✗
vLLM✓
CLI
Langfuse✗
vLLM✓
Deployment
Cloud / SaaS
Langfuse✓
vLLM✓
Self-hosted
Langfuse✓
vLLM✓
On-premise
Langfuse✗
vLLM✓

Integrations

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

In common (3)
  • OpenAI
  • Hugging Face
  • OpenTelemetry

Langfuse

24 total - 21 not shared
  • LangChain
  • 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
Independently observed

vLLM

33 total - 30 not shared
  • NVIDIA Dynamo
  • OpenAI-compatible API
  • Anthropic Messages API
  • FlashAttention
  • FlashInfer
  • CUTLASS
  • torch.compile
  • gRPC
  • GPTQ
  • AWQ
  • GGUF
  • ModelOpt
  • TorchAO
  • OpenAI API
  • Kubernetes
  • PyTorch
  • Ray
  • Prometheus
  • FastAPI
  • Transformers
  • Outlines
  • Google Cloud TPU
  • Intel Gaudi
  • AMD Instinct
  • +6 more
Independently observed
Still deciding?

Langfuse or vLLM: 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.