Pick Langfuse if
teams shipping LLM apps who need traces and a cost tile, not another chat UI.
Read the Langfuse pageLangfuse vs Opik
Our take
Pick Langfuse if teams shipping LLM apps who need traces and a cost tile, not another chat UI. Pick Opik if agent teams who will stay on OSS $0 or Free Cloud $0 (25k spans, 10 members), then buy Pro Cloud at $19/month when they need 100k spans and 50 seats. Skip Langfuse if people who only want a gateway (LiteLLM) or a framework (LangChain) without an observability SKU.
Opik
agent trace + eval desk
Best for
Langfuse Debug and cost-track generations
Opik Spans you can self-host at $0 or rent from $0 Cloud / $19 Pro
Free plan
Langfuse $0 · for the MIT core. ee/ is not the community license
Opik $0 · self-host. Full observability + agent testing. Same codebase as hosted. Agent Playground included
Lowest paid
Langfuse Enterprise $2/mo
Opik Not published by the vendor
Next step up
Langfuse Core $29/mo
Opik
Coding agent
Langfuse
Opik Experiments + datasets
Runs where
Langfuse Local or hosted
Opik Local; you host it
Watch out
Langfuse Hobby is two users and 30-day retention
Opik Free Cloud is 25k spans
Last checked
Langfuse 2026-10-19 · langfuse.com/pricing
Opik 2026-10-22 · comet.com/site/pricing
Which one, then?
Pick Opik if
agent teams who will stay on OSS $0 or Free Cloud $0 (25k spans, 10 members), then buy Pro Cloud at $19/month when they need 100k spans and 50 seats.
Read the Opik page