Google's best Flash model for agent and coding work; the introductory price doubles after 31 December 2026, so budget accordingly.

Kenning's take

What it does

Gemini 3.8 Flash is Google's most capable Flash model, built for long software tasks, autonomous agents and specialist work in finance and law. It works harder on complex tasks and may use more tokens at higher effort settings. A separate 3.8 Flash Cyber version for vulnerability finding goes only to vetted defenders through the Fairwind Program.

• Long-horizon coding and agents
• Adjustable effort levels
• Better prompt-injection resistance
• Computer use tool support
• Cyber variant for vetted defenders

Who it suits. Developers and businesses running agents, and Google AI Pro and Ultra subscribers.

Key facts

Category

AI models

Part of

Google Gemini

Made by

Google

Based in

United States

Released

2 September 2026

How to get it

Gemini API, AI Studio, Antigravity, Android Studio and Gemini Enterprise; Gemini app, AI Mode and Gemini in Sheets for Google AI Pro and Ultra subscribers

Works on

Web, Android, iOS, API

In the UK

Yes

Free plan

Yes, Gemini API free tier

API price

$0.75 input / $3.75 output per million tokens through 31 Dec 2026; $1.50 / $7.50 from 1 Jan 2027

FAQ

Facts from the maker's own pages and the sources listed. Checked 2026-10-11.