Langfuse

★ 4/5 · Infrastructure/Database

Langfuse is AI infrastructure or database tooling for vectors, data pipelines, or model serving.

Pros

LLM observability and evaluation platform for monitoring production LLM applications
detailed logging, tracing, and analytics for model performance
prompt versioning and A/B testing capabilities
open-source and cloud options available

Cons

confusion about whether product is still active or has been deprecated
no accessible documentation or pricing tiers found

Cost

Hobby is free with no card, covering 50,000 units a month, 30 days of data access and 2 users; Core $29 per month with 100,000 units included, 90 days of data access and unlimited users; Pro $199 per month with 100,000 units included and 3 years of data access, plus an optional Teams add-on at $300 per month; Enterprise $2,499 per month, or a custom yearly figure, with 100,000 units included, 3 years of data access and Teams features. Extra units are billed on a sliding scale of $8.00 per 100,000 from 100,000 to 1M, $7.00 from 1M to 10M, $6.50 from 10M to 50M and $6.00 above 50M.

Visit Langfuse