These tools competes with

LangfusevsLogfire

OSS LLM engineering platform versus Observability platform by the Pydantic team

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Choose Langfuse when…

  • •You want open-source LLM observability
  • •Self-hosting your tracing stack is important
  • •You need cost tracking across models and users

Choose Logfire when…

  • •You want Pydantic-native observability for Python apps
  • •Structured logging and tracing in one tool matter
  • •You're already using Pydantic in your Python stack

Side-by-side comparison

Field
Langfuse
Logfire
Category
LLM Infrastructure
LLM Infrastructure
Type
Open Source
Commercial
Free Tier
✓ Yes
✓ Yes
Pricing Plans
Cloud: $59/mo
Team: Paid
GitHub Stars
⭐ 7,000
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Langfuse

Open-source platform for tracing, evaluations, and prompt management. Self-hostable alternative to LangSmith with clean UX.

Website ↗GitHub ↗

Logfire

OpenTelemetry-based observability platform built by Pydantic. Tight integration with PydanticAI for tracing agent runs and LLM calls with structured data.

Website ↗

Shared Connections1 tools both integrate with

Helicone

Only Langfuse (26)

CursorClaude CodeOpenHandsCrewAIAutoGenLangGraphLangChainLlamaIndexDifyMastra

Only Logfire (2)

PydanticAILangfuse

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See how Langfuse and Logfire fit into the bigger picture — 123 tools, 304 relationships, all mapped.

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