Gemini 3.8 Flash

Available

Google's stable Flash model for long-horizon software engineering, autonomous agents, and complex enterprise workflows.

Access details: Gemini API

Versioned identifier · Identity and lifecycle apply to this exact identifier and serving surface.

gemini-3.8-flash

Source check: Sep 13, 2026

Sources & notes →

Capabilities & limits

Context window: 1,048,576
Maximum output: 65,536
Image input: Supported
Tool calling: Supported
Structured output: Supported

Documented interfaces and limits. These are not measures of model quality.

Pricing

USD / 1M tokens

Input: $0.75USD per million input tokens, standard tier introductory rate through 2026-12-31.
Output: $3.75USD per million output tokens including thinking, standard tier introductory rate through 2026-12-31.

USD per million standard text tokens. Detailed cache, batch and other pricing conditions appear in the rate card.

Full rate card 8 rates

Amounts in USD. Check the unit and conditions on each rate.

Standard input introductory

$0.75 USD per 1M tokens

effective through 2026-12-31

Standard output introductory

$3.75 USD per 1M tokens

includes thinking tokens
effective through 2026-12-31

Standard cache read introductory

$0.075 USD per 1M tokens

effective through 2026-12-31

Cache storage introductory

$0.50 USD per 1M tokens per hour

effective through 2026-12-31

Standard input

$1.50 USD per 1M tokens

effective from 2027-01-01

Standard output

$7.50 USD per 1M tokens

includes thinking tokens
effective from 2027-01-01

Standard cache read

$0.15 USD per 1M tokens

effective from 2027-01-01

Cache storage

$1.00 USD per 1M tokens per hour

effective from 2027-01-01

Free tier is free of charge subject to availability and limits; Batch, Flex, and Priority tiers are separately priced.

Price history

Sep 2, 2026

Input $0.75 per million tokens

USD per million input tokens, standard tier introductory rate through 2026-12-31.

Jan 1, 2027

Input $1.50 per million tokens

USD per million input tokens, standard tier rate effective 2027-01-01.

Sep 2, 2026

Output $3.75 per million tokens

USD per million output tokens including thinking, standard tier introductory rate through 2026-12-31.

Jan 1, 2027

Output $7.50 per million tokens

USD per million output tokens including thinking, standard tier rate effective 2027-01-01.

Technical details

Training / knowledge cutoff: January 2025
Input modalities: text, image, video, audio, PDF
Output modalities: text

3 details not verified

Parameters
Active parameters
Architecture

1,048,576 input-token limit; 65,536 output-token limit; thinking levels low, medium, high.

From Google

Official announcement ↗

How they describe it

Our most intelligent Flash model, engineered for long-horizon software engineering, autonomous agents, and complex enterprise workflows.

What they say is different

delivering significant improvements from 3.7 Flash across software engineering, agentic tasks, and critical, multi-step reasoning in specialized domains

Verbatim provider claims · not an independent assessment

Release & lifecycle

Availability applies to this exact identifier on Gemini API.

First API availability: Sep 2, 2026
available: Observed Sep 13, 2026