Modelpeers

Gemini 3.8 Flash changelog

Every change to Gemini 3.8 Flash that Modelpeers has recorded, newest first, each with the source it came from. The record starts Sep 2, 2026.

All (4)Releases (2)Breaking changes (1)Prices/limits (1)

October 2026

Gemini 3.8 Flash character

Gemini 3.8 Flash and 3.6 Flash

2 models from Google

Price change

Gemini 3.8 Flash and 3.6 Flash prices double on January 1, 2027

Paid-tier input for both models costs $0.75 and output $3.75 per 1M tokens through December 31, 2026, rising to $1.50 and $7.50 starting January 1, 2027.

Before

$0.75 input / $3.75 output per 1M tokens

After

$1.50 input / $7.50 output per 1M tokens

Takes effect Jan 1, 2027 · in 61 days

Who is affected:
Paid Gemini API users of gemini-3.8-flash or gemini-3.6-flash.
Action needed:
Budget for double the token cost from January 1, 2027, or compare against Flash-Lite.
Gemini 3.8 Flash character

Gemini 3.7 Flash and 3.8 Flash

2 models from Google

Default change

Gemini 3.7 Flash deprecated, requests now routed to 3.8 Flash

gemini-3.7-flash is deprecated and no longer selectable in AI Studio. API requests to gemini-3.7-flash are automatically served by gemini-3.8-flash.

Before

gemini-3.7-flash

After

gemini-3.8-flash

Who is affected:
Apps calling gemini-3.7-flash, which now get gemini-3.8-flash responses.
Action needed:
Update the model string to gemini-3.8-flash and retest.

September 2026

1 incident is listed on the Gemini 3.8 Flash page. Get this changelog in a feed reader with the RSS feed.