Pick OpenLIT if
teams who will self-host OpenLIT at $0 (you bring compute) — not Langfuse first unless they want that Cloud tile.
Read the OpenLIT pageOpenLIT vs Phoenix
Our take
Pick OpenLIT if you're on a team who will self-host OpenLIT at $0 (you bring compute) — not Langfuse first unless they want that Cloud tile. Pick Phoenix if you're on a agent team who will self-host Phoenix for $0 (uvx arize-phoenix serve) and only open Arize AX when they want a managed cloud.
Best for
OpenLIT Apache OTel traces you run yourself
Phoenix See why an agent failed and prove a fix
Free plan
OpenLIT $0 · docker / local. You bring machines
Phoenix $0 · local / Docker / Kubernetes. You bring compute. Homepage: uvx arize-phoenix serve
Lowest paid
OpenLIT Not published by the vendor
Phoenix AX Pro $50/mo
Runs where
OpenLIT Local or hosted
Phoenix Hosted
Watch out
OpenLIT $0 is the license, not your cluster
Phoenix ELv2, not Apache
Last checked
OpenLIT 2026-10-27 · docs.openlit.io
Phoenix 2026-10-27 · arize.com/pricing
Which one, then?
Pick Phoenix if
agent teams who will self-host Phoenix for $0 (uvx arize-phoenix serve) and only open Arize AX when they want a managed cloud.
Read the Phoenix page