Datadog vs Langfuse
Datadog vs Langfuse: which to choose
Langfuse has the larger community with 11.2k GitHub stars against — for Datadog, which usually means more integrations, examples and third-party help when you get stuck.
Both charge from day one, but Langfuse starts lower at $0/mo versus $15/mo for Datadog.
Choose Datadog if you lean toward apm and infrastructure; choose Langfuse if llm-engineering and observability matters more for your stack. All figures above are pulled from live GitHub and pricing data, not vendor marketing.
Frequently asked questions
Is Datadog or Langfuse better?▾
It depends on your priorities. Datadog has — GitHub stars and uses a freemium pricing model, while Langfuse has 11.2k stars and uses a freemium model. Both offer a free plan so you can try each before committing.
Is Datadog cheaper than Langfuse?▾
Datadog starts at $15/mo while Langfuse starts at $0/mo. Datadog has a free plan. Langfuse has a free plan.
What are the main differences between Datadog and Langfuse?▾
Datadog is tagged as apm, infrastructure, logs while Langfuse is tagged as llm-engineering, observability, prompt-management. Datadog uses a freemium pricing model. Langfuse uses a freemium model with 11.2k GitHub stars.
Does Datadog or Langfuse have a free plan?▾
Yes, both Datadog and Langfuse offer a free plan.