I really don’t get the logic here. Many developers already have working products based on the “stable” version of 2.5 Flash. Is the new preview version intended to become the new “stable” version? What’s the point of calling stable if you’re going to change the model three months in?

Hi @Amit_Tzah Latest gemini-2.5-flash-preview-09-2025 model comes with improvements in two key areas we heard consistent feedback on better agentic tool use and more efficient with thinking on. Please check this out [image] Continuing to bring you our latest models, with an improved Gemin…

I must say I am afraid of this update as the preview version of 2.5 flash (at least via OpenRouter) is much worse in tool use in my use case. It falls into repeated tool calling loops very often, where current 2.5 flash has no problems at all.

that’s very bad repeated tool calls is a real problem

I thought gemini-2.5-flash was supposed to be a stable version, supported for at least a year. Why are you releasing a new snapshot for that model?

Gemini API

Joe1 October 23, 2025, 12:39pm 9

It also breaks the thinking_budget parameter, see here

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I thought gemini-2.5-flash was supposed to be a stable version, supported for at least a year. Why are you releasing a new snapshot for that model?

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