These tools competes with

LogfirevsLangfuse

Observability platform by the Pydantic team versus OSS LLM engineering platform (acquired by ClickHouse, Jan 2026)

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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

Choose Langfuse when…

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

Side-by-side comparison

Field
Logfire
Langfuse
Category
Observability
Observability
Type
Commercial
Open Source
Free Tier
✓ Yes
✓ Yes
Pricing Plans
Team: Paid
Cloud: $59/mo
GitHub Stars
—
⭐ 7,000
Health
—
●95 — Active

Logfire

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

Website ↗

Langfuse

Open-source platform for tracing, evaluations, and prompt management. Self-hostable alternative to LangSmith with broad framework support. Acquired by ClickHouse in January 2026; OSS core continues with deeper ClickHouse-backed analytics.

Website ↗GitHub ↗

Shared Connections1 tools both integrate with

Helicone

Only Logfire (2)

PydanticAILangfuse

Only Langfuse (30)

Claude CodeCrewAICursorLangGraphLangChainOpenHandsAutoGenLlamaIndexDifyMastra

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See how Logfire and Langfuse fit into the bigger picture — 235 tools, 543 relationships, all mapped.

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