gemini-3.5-flash

proprietary

The Interactions API is now generally available. We recommend using this API for access to all the latest features and models. Home Gemini API Docs Send feedback Gemini 3.5 Flash Gemini 3.5 Flash provides sustained frontier-level intelligence optimized for real-world tasks at a higher speed and lower cost. Designed for the agentic era, it excels at sub-agent deployment, multi-step workflows, and long-horizon tasks at scale. This model is particularly effective for rapid agentic loops involving complex coding cycles and iterations.

Context
1.0M
Max output
66K
Input price
$1.5/1M tokens
Output price
$9/1M tokens

Capabilities

Reasoning & Interaction
Reasoning
Tool Calling
Output Control
Structured Output
JSON Mode
Infrastructure
Streaming
Batch Processing

Details

Provider Google AI
Creator google
Familygemini-3.5
Licenseproprietary
Statusactive
Typechat
Input modalitiestext, image, video, audio
Output modalitiestext, image, audio
Open weightNo
Parameters—
Architecture—
Context window1.0M tokens
Max input—
Max output66K tokens
Reasoning tokens—
Knowledge cutoff
Release date—
Sourceofficial

Tools

Function Callingfunction_calling
Call external functions and APIs

Endpoints

Generate ContentPOST
Generate text from multimodal inputhttps://generativelanguage.googleapis.com/v1beta/v1beta/models/{model}:generateContent
Stream ContentPOST
Stream text generation responseshttps://generativelanguage.googleapis.com/v1beta/v1beta/models/{model}:streamGenerateContent

Pricing

Text tokensPer 1M tokens
InputCached inputOutput
Standard$1.5$0.15$9
Batch$0.75—$4.5

Family Comparison: gemini-3.5

ModelContextMax outPricing
gemini-3.5-flash-lite1.0M66K$0.3$2.5
gemini-3.5-flash1.0M66K$1.5$9
gemini-3.5-transcribe——$2$12
gemini-3.5-live-translate-preview131K66K$3.5$21

API

GET/v1/models/google/gemini-3.5-flash