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Helicone vs Langfuse

This comparison was retrieved by database IDs selected from the catalog.

Helicone favicon

Helicone

Helicone

Langfuse favicon

Langfuse

Langfuse

Overview
Rating
—
—
Category
Developer Tools
Developer Tools
Subcategory
LLM Observability
LLM Observability Platform
Company
Helicone
Langfuse
Status
Active
Active
Launch year
2023
2023
Tags
observabilityllmcost-monitoringproxyopen-sourcedeveloper-tools
observabilityllmtracingmonitoringopen-sourcedeveloper-tools
Pricing
Starting price
$20/moBest value
$59/mo
Pricing model
Open Source
Open Source
Free plan
Yes
Yes
Free trial
✕
✕
Pricing notes

Free plan with 100,000 requests/month. Pro $20/month with more requests and features. Teams and Enterprise custom pricing. Open source self-hosted option available.

Free self-hosted (open source). Hobby cloud plan free. Pro cloud $59/month. Team $399/month. Enterprise custom pricing.

Capabilities
Best for
LLM cost monitoringAPI request debuggingUsage analyticsCaching for cost reduction
LLM application debuggingProduction monitoringPrompt optimisationQuality evaluationAI application development
Target audience
DevelopersStartups with AI featuresLLM cost-conscious teamsEngineering teams wanting quick observability
AI application developersML engineersLLM platform teamsEnterprise AI teams
AI type
ML Platform
ML Platform
Modalities
TextCode
TextCode
Technical
Model provider
Agnostic
Agnostic
Model names
—
—
API available
✓
✓
Open source
✓
✓
Deployment
Open SourceSaaS
Open SourceSaaSSelf-hosted
Platforms
WebAPI proxy
WebPython SDKTypeScript SDK
Integrations
OpenAIAnthropicAzure OpenAIAny OpenAI-compatible API
LangChainLlamaIndexOpenAIAnthropicGitHub ActionsVercel AI SDK
Team collaboration
✕
✕
Trust & security
Security

Open source self-hosted provides complete data control. Cloud proxy: review Helicone's data handling policy. Production AI traffic routed through Helicone's infrastructure.

Self-hosted: complete data control. Cloud: review Langfuse's data handling policy. Enterprise includes data processing agreements.

Privacy notes

Cloud version routes all AI API traffic through Helicone's proxy. Review privacy implications for sensitive production data. Self-hosted option provides complete data control.

Self-hosted Langfuse keeps all trace data within your infrastructure. Cloud version processes trace data on Langfuse's servers. Review privacy policy for applications with sensitive user data.

Verdict
Pros
  • Minimal integration — one URL change enables full request logging
  • Cost visibility immediately identifies expensive prompts and usage patterns
  • Caching reduces API costs for applications with repetitive queries
  • Open source self-hosted option for data privacy requirements
  • Open source self-hosting provides complete data control for sensitive applications
  • Evaluation framework goes beyond tracing to quality assessment
  • Dataset management enables regression testing across prompt versions
  • Integrates with LangChain, LlamaIndex, and most major LLM frameworks
Cons
  • Proxy-based architecture requires routing production traffic through Helicone's servers (cloud version)
  • Less feature depth than Langfuse or LangSmith for advanced evaluation
  • Full cloud observability depends on routing all AI traffic externally
  • Requires setup investment to get value from tracing and evaluation
  • Team plan at $399/month is expensive for smaller teams
  • Not useful without LLM applications to monitor

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