These tools competes with
LangfusevsLogfire
OSS LLM engineering platform (acquired by ClickHouse, Jan 2026) versus Observability platform by the Pydantic team
Compare interactively in Explore →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
Observability
Observability
Type
Open Source
Commercial
Free Tier
✓ Yes
✓ Yes
Pricing Plans
Cloud: $59/mo
Team: Paid
GitHub Stars
⭐ 7,000
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Health
●95 — Active
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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.
Logfire
OpenTelemetry-based observability platform built by Pydantic. Tight integration with PydanticAI for tracing agent runs and LLM calls with structured data.
Shared Connections1 tools both integrate with
Only Langfuse (30)
Claude CodeCrewAICursorLangGraphLangChainOpenHandsAutoGenLlamaIndexDifyMastra
Only Logfire (2)
PydanticAILangfuse
Explore the full AI landscape
See how Langfuse and Logfire fit into the bigger picture — 235 tools, 543 relationships, all mapped.