Gemini 3.6 Flash changelog

Every change to Gemini 3.6 Flash that Modelpeers has recorded, newest first, each with the source it came from. The record starts Jul 21, 2026.

October 2026

Gemini 3.5 Flash and 3.6 Flash

2 models from Google

Default change

Gemini 3.5 Flash deprecated, requests now routed to 3.6 Flash

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.

July 2026

Gemini 3.6 Flash

Model at Google

Breaking change

Gemini deprecates temperature, top_p and top_k

Google deprecated the temperature, top_p and top_k sampling parameters. The Gemini 3.6 Flash guide says the API ignores them now and will return an HTTP 400 error for them in future model generations.

Who is affected:
Apps that set temperature, top_p or top_k on Gemini requests.
Action needed:
Remove temperature, top_p and top_k from Gemini requests.

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