Gemini 3.5 Flash changelog

Every change to Gemini 3.5 Flash that Modelpeers has recorded, newest first, each with the source it came from. The record starts May 19, 2026.

October 2026

2 models from Google

Default change3w

gemini-3.5-flash is deprecated and no longer selectable in AI Studio. API requests to gemini-3.5-flash are automatically served by gemini-3.6-flash.

Before

gemini-3.5-flash

After

gemini-3.6-flash

Who is affected:: Apps calling gemini-3.5-flash, which now get gemini-3.6-flash responses.
Action needed:: Update the model string to gemini-3.6-flash or gemini-3.8-flash and retest.

Model at Google

Default changeMay 19, 2026

With the Gemini 3.5 Flash GA release, Google moved the gemini-flash-latest alias to this model.

After

gemini-3.5-flash

Who is affected:: Apps that call the gemini-flash-latest alias instead of a pinned model version.
What to do:: Pin a specific model version if you need stable behavior.

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