[Feature]: Gemini 2.5 Flash - Vertex AI to be added to LiteLLM

[Classic298]

The Feature

Add Gemini 2.5 Flash to Vertex AI with optional reasoning configurable via parameters in the proxy.

Motivation, pitch

It's a new fast and inexpensive model by google

Are you a ML Ops Team?

No

Twitter / LinkedIn details

No response

[adamwuyu]

We really need Gemini 2.5 Flash !

[mohamedScikitLearn]

Also, can we have the budget parameter added to unable / disable thinking mode?

[emc2314]

Gemini-2.5-flash is supported by #10141, but there is currently no way to disable thinking for this model.

[mohamedScikitLearn]

Hey @emc2314 (and whom might me be interested), There is a workaround using litellm to use gemini-2.5-Flash (without thinking).

You can use openrouter integration in litellm ( see here then your LLM should be: google/gemini-2.5-flash-preview

[krrishdholakia]

Question: should litellm's default be with thinking or without?

[Classic298]

@krrishdholakia default should be without. Definitely.