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Langfuse

Best for Open-source & cost-effective LLM observability

Dev Tools & APIs $0/mo
9.2
Stackmatchup score
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How Langfuse scores

Value9.5
Capability9.0
Momentum9.6
Ecosystem8.8

Weighted composite. Pricing and limits verified against official vendor documentation — last checked July 25, 2026.

⚖ VERDICT

Langfuse at a glance

✓ Best for
Open-source & cost-effective LLM observability
⚠ Watch out
Requires ClickHouse for self-hosted scale

Langfuse matchups

Every head-to-head where we put Langfuse against a rival.

Langfuse vs LangSmith title graphic showing both LLM observability platforms facing off
Dev Tools & APIs ★ Langfuse WINS
Langfuse vs LangSmith: The 2026 LLM Observability Verdict
JUL 25 · 7 MIN READ