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Langfuse vs Traceloop

Langfuse logo

Langfuse

Software Development

Simple pricing for projects of all sizes

From
Free
Rated
-
Full reviewWebsite
Traceloop logo

Traceloop

Logging

LLM reliability platform with open-source observability and evaluation

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Langfuse free Hobby plan limited to 2 users and 30-day data retention; Traceloop free tier limited to 50k spans per month and 24-hour retention, restricting production use

Where they differ

Only the attributes on which Langfuse and Traceloop actually diverge.

Attributes where Langfuse and Traceloop differ
AttributeLangfuseTraceloop
Pricing modelfreemiumFreemium with pay-as-you-go enterprise option
PlatformsWebCloud, On-premises, Air-gapped, Python, TypeScript, Go, Ruby
CategorySoftware DevelopmentLogging

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Langfuse

Nothing recorded that Traceloop does not also cover.

Only in Traceloop

  • Open-source SDK (OpenLLMetry)
  • Multi-provider support
  • Observability platform integration
  • Framework support
  • Monitoring dashboard
  • Evaluation system
  • Deployment flexibility

What people use each for

The jobs each tool is most often brought in to do.

Langfuse

No use cases recorded yet. See the Langfuse review.

Traceloop

  • Monitoring LLM application performance in productionnot Langfuse
  • Instrumenting LLM apps with minimal code overheadnot Langfuse
  • Continuous evaluation and quality scoring of LLM outputsnot Langfuse
  • Debugging LLM application issues with full trace visibilitynot Langfuse
  • Integrating observability data into existing monitoring stacksnot Langfuse

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Langfuse

  • Free Hobby plan limited to 2 users and 30-day data retention
  • Overage pricing applies beyond included units; graduated rates from $8.00 per 100k units down to $6.00 per 100k units at 50M+ volume

Traceloop

  • Free tier limited to 50k spans per month and 24-hour retention, restricting production use
  • Company acquisition by ServiceNow creates uncertainty about future roadmap
  • Requires integration with separate observability platforms for visualization
  • Less feature-rich than dedicated LLM evaluation platforms

Pricing, plan by plan

Langfuse

Free
  • HobbyFree
    • 50k units/month
    • 30-day data retention
    • 2 users maximum
  • Core$29/month
    • 100k units/month
    • 90-day data retention
    • Unlimited users
  • Pro$199/month
    • 100k units/month
    • 3-year data retention
    • SOC2 & ISO27001 compliance
  • Enterprise$2499/month
    • Custom rate limits
    • Dedicated support engineer
    • SCIM API & audit logs

Traceloop

Free
  • FreeFree
    • 50,000 spans per month
    • Up to 5 seats
    • 24-hour data retention
  • Enterprise$undefined/custom
    • Unlimited spans per month
    • Unlimited seats
    • Custom data retention

Which should you pick?

Choose Langfuse if

  • You want to start without paying.
Langfuse review

Choose Traceloop if

  • You need open-source sdk (openllmetry).
  • You want to start without paying.
  • You work on Cloud, On-premises, Air-gapped, Python, TypeScript, Go, Ruby.
  • You also want multi-provider support.
Traceloop review

Questions people ask

Is Langfuse or Traceloop better?
Neither clearly leads. Langfuse starts at Free and Traceloop at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Langfuse or Traceloop?
Langfuse starts at Free and Traceloop at Free.
Does Langfuse or Traceloop run on more platforms?
Langfuse runs on Web. Traceloop runs on Cloud, On-premises, Air-gapped, Python, TypeScript, Go, Ruby.
Can I use Langfuse for free?
Both have a free tier, so you can try either at no cost before committing.
What can Langfuse do that Traceloop cannot?
Traceloop covers Open-source SDK (OpenLLMetry), Multi-provider support, Observability platform integration, Framework support.

Answered from the vendors’ own pages

Langfuse: What does Langfuse cost?

Langfuse starts at $29/month for the Core plan (100k units/month). Pro costs $199/month with 3-year data retention. Enterprise costs $2499/month for custom rate limits and dedicated support.

Source
Traceloop: Is OpenLLMetry open-source?

Yes, OpenLLMetry is Traceloop's open-source SDK built on OpenTelemetry standards. It allows teams to instrument LLM applications with just 2 lines of code and send data to 25+ observability platforms.

Source
Langfuse: Does Langfuse have a free plan?

Yes, the Hobby plan is free with 50k units/month, 30-day data retention, and support for up to 2 users.

Source
Traceloop: What is the impact of ServiceNow acquisition?

Traceloop is joining ServiceNow, representing a strategic acquisition that will broaden enterprise adoption and integration capabilities. Current operations continue with free and enterprise options available.

Source
Langfuse: What happens if I exceed my unit limits on Langfuse?

Overage pricing applies with graduated rates: $8.00 per 100k units for 100k-1M units, $7.00 per 100k units for 1M-10M units, $6.50 per 100k units for 10M-50M units, and $6.00 per 100k units for 50M+ units.

Source
Traceloop: How many LLM providers and frameworks does Traceloop support?

Traceloop supports 20+ LLM providers including OpenAI and Anthropic, and integrates with frameworks like LangChain and LlamaIndex. It can send data to 25+ observability platforms.

Source
Langfuse: Are there discounts available on Langfuse?

Early-stage startups receive 50% off the first year. Research and student accounts qualify for up to 100% off. Non-profits receive $199 monthly credits.

Source
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