Pick Langfuse if
teams shipping LLM apps who need traces and a cost tile, not another chat UI.
Read the Langfuse pageLangfuse vs Promptfoo
Our take
Pick Langfuse if teams shipping LLM apps who need traces and a cost tile, not another chat UI. Pick Promptfoo if app teams who will run Community for $0 (MIT, self-host) and only buy Enterprise when they need SSO, a shared dashboard, and more than 10k probes. Skip Langfuse if people who only want a gateway (LiteLLM) or a framework (LangChain) without an observability SKU.
Best for
Langfuse Debug and cost-track generations
Promptfoo Fail the build before a prompt ships
Free plan
Langfuse $0 · for the MIT core. ee/ is not the community license
Promptfoo No free plan
Lowest paid
Langfuse Enterprise $2/mo
Promptfoo Not published by the vendor
Next step up
Langfuse Core $29/mo
Promptfoo
Coding agent
Langfuse
Promptfoo Eval matrix
Runs where
Langfuse Local or hosted
Promptfoo Hosted
Watch out
Langfuse Hobby is two users and 30-day retention
Promptfoo Community red team is 10k probes/month
Last checked
Langfuse 2026-10-19 · langfuse.com/pricing
Promptfoo 2026-10-22 · promptfoo.dev/pricing
Which one, then?
Pick Promptfoo if
app teams who will run Community for $0 (MIT, self-host) and only buy Enterprise when they need SSO, a shared dashboard, and more than 10k probes.
Read the Promptfoo page