vioscaleAI
Comparison

Braintrust vs Langfuse

On the evidence we track, Langfuse leads this comparison with a composite score of 66/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Braintrust full profile →Langfuse full profile →
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Braintrust55
★Langfuse66
Score
vioscaleAI score
Braintrust55 / 100low · 31%
Langfuse66 / 100medium · 56%
Pricing
Free tier
Braintrust–
Langfuse✓
Model
Braintrust–
Langfusefreemium
Price level
Braintrust–
Langfusefree
Transparent
Braintrust–
Langfuse✗
Integrations
Count
Braintrust3
Langfuse100
Security
Certifications
BraintrustSOC 2 Type II
Langfuse–
Gdpr
Braintrust✓
Langfuse✓
Hipaa
Braintrust✓
Langfuse✓
Iso27001
Braintrust–
Langfuse✓
Pci
Braintrust✓
Langfuse–
Soc2
Braintrust✓
Langfuse✓
Trust center
Vulnerabilities
Reliability
Status page
Braintrust✓
Langfuse✓
Adoption
Dependent repos
Braintrust–
Langfuse0
Github stars
Braintrust–
Langfuse35,781
Package downloads weekly
Braintrust–
Langfuse6,493,381
Activity
Commits last 30d
Braintrust–
Langfuse100
Release
History
Braintrust–
Langfuse20 items
License
Spdx
Braintrust–
LangfuseMIT
Language
Primary
Braintrust–
LangfuseTypeScript
Market
Availability
Braintrust–
LangfuseAvailable worldwide
Content
Faq
Braintrust5 items
Langfuse7 items

Capabilities

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

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

What each one is

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

Braintrust

Braintrust provides real-time observability for AI agents in production. It enables teams to inspect traces and tool calls, automatically discover patterns and issues, run experiments to evaluate quality, and continuously iterate on agent performance.

Independently observed

Langfuse

Leader

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

Pricing

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

Braintrust

Pricing not documented yet.

Langfuse

Leader
SubscriptionFree tier

Multiple tiers available; specific pricing not shown in provided text

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

Platform & deployment

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

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

Integrations

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

In common (2)
  • OpenAI
  • Anthropic

Braintrust

3 total - 1 not shared
  • Google
Independently observed

Langfuse

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

Braintrust or Langfuse: 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.