using openrouter, why is grok3 or gemini 2.5 not available in the drop-down?

[jBbL81]

i'm very new to all of this so apologies in advance.

i'm using litellm 1.72.2 -- https://i.imgur.com/TYvKrmn.png

when i go to "Add new model" and select openrouter and type grok, nothing appears -- https://i.imgur.com/meNigyb.png

when i type "gemini", only the old models are there -- https://i.imgur.com/LMSdIFj.png

i don't know if this is a litellm or openrouter issue. what am i missing here?

thank you for any help...