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google
google/gemini-3.5-flash

google/gemini-3.5-flash

1,048,576 context · $1.50/M input tokens · $9.00/M output tokens

Gemini 3.5 Flash is Google’s high-efficiency multimodal model, delivering near-Pro-level reasoning and coding capabilities with Flash-class speed and cost efficiency. It is purpose-built for advanced coding workflows and parallel agentic execution, while supporting a wide range of input modalities including text, images, video, audio, and PDFs.

The model defaults to a medium reasoning mode to balance latency, quality, and cost, while also offering configurable thinking levels — minimal, low, medium, and high — for more precise performance and efficiency tuning across different workloads.

Pricing

Pay-per-use

No upfront costs, pay only for what you use

Input$1.50 / M Tokens
Output$9.00 / M Tokens
Cache Read$0.15 / M Tokens
Cache Write$0.08 / M Tokens

Try the model

google/gemini-3.5-flash
Online
google
Hi! I am a helpful AI assistant. What can I do for you?

API Usage

Use the following code examples to integrate with our API:

from openai import OpenAI

client = OpenAI(
    api_key="YOUR_API_KEY",
    base_url="https://llm.wavespeed.ai/v1"
)

response = client.chat.completions.create(
    model="google/gemini-3.5-flash",
    messages=[
        {"role": "user", "content": "Hello!"}
    ]
)

print(response.choices[0].message.content)

Model Introduction

Google: Gemini 3.5 Flash

Gemini 3.5 Flash is Google’s high-efficiency multimodal model, delivering near-Pro-level reasoning and coding capabilities with Flash-class speed and cost efficiency. It is purpose-built for advanced coding workflows and parallel agentic execution, while supporting a wide range of input modalities including text, images, video, audio, and PDFs.

The model defaults to a medium reasoning mode to balance latency, quality, and cost, while also offering configurable thinking levels — minimal, low, medium, and high — for more precise performance and efficiency tuning across different workloads.


Why It Looks Great

  • text+image+file+audio+video->text architecture for Text, Image, Video, file, Audio to Text workloads
  • 1048576 context window for long prompts, document analysis, and multi-turn workflows
  • Competitive pricing at $1.5/$9 per million tokens
  • Vision input support for image understanding and multimodal tasks
  • Function calling and tool-use support for agentic application workflows
  • Structured output support for JSON responses and schema-constrained generation

Key Features

  • Context Window: 1048576 tokens
  • Max Input: 983040 tokens
  • Max Output: 65536 tokens
  • Vision: Supported
  • Function Calling: Supported
  • Structured Outputs: Supported
  • Image Generation: Not listed
  • Audio Input: Supported
  • Supported Parameters: include_reasoning, max_tokens, reasoning, response_format, seed, stop, structured_outputs, temperature, tool_choice, tools, top_p

Specifications

SpecificationValue
Providergoogle
Model TypeChat Completions model
Architecturetext+image+file+audio+video->text
Context Window1048576 tokens
Max Input983040 tokens
Max Output65536 tokens
InputText, Image, Video, file, Audio
OutputText
VisionSupported
Function CallingSupported
Structured OutputsSupported

How to Use

  1. Write your prompt - describe the task, provide context, and specify the desired output format.
  2. Submit - the model processes your request and returns the response.

API Integration

Base URL: https://llm.wavespeed.ai/v1 API Endpoint: chat/completions Model ID: google/gemini-3.5-flash


API Usage

Python SDK

from openai import OpenAI

client = OpenAI(
    api_key="YOUR_API_KEY",
    base_url="https://llm.wavespeed.ai/v1"
)

response = client.chat.completions.create(
    model="google/gemini-3.5-flash",
    messages=[{"role": "user", "content": "Hello!"}]
)

print(response.choices[0].message.content)

cURL

curl https://llm.wavespeed.ai/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "model": "google/gemini-3.5-flash",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Info

Providergoogle
Typellm

Supported Functionality

Input
TextImageAudio
Output
Text
Context1,048,576
Max Output65,536
Vision✓ Supported
Function Calling✓ Supported

API Access Guide

Base URLhttps://llm.wavespeed.ai/v1
API Endpointchat/completions
Model IDgoogle/gemini-3.5-flash

Gemini 3.5 Flash API

google/gemini-3.5-flash

Gemini 3.5 Flash is Google’s high-efficiency multimodal model, delivering near-Pro-level reasoning and coding capabilities with Flash-class speed and cost efficiency. It is purpose-built for advanced coding workflows and parallel agentic execution, while supporting a wide range of input modalities including text, images, video, audio, and PDFs. The model defaults to a medium reasoning mode to balance latency, quality, and cost, while also offering configurable thinking levels — minimal, low, medium, and high — for more precise performance and efficiency tuning across different workloads.

Input

$1.5 /M

Output

$9 /M

Context

1049K

Max Output

66K

Vision

Supported

Tool Use

Supported

Try Gemini 3.5 Flash on WaveSpeedAI

Access Gemini 3.5 Flash through our unified API — OpenAI-compatible, no cold starts, transparent pricing.

Frequently Asked Questions about Gemini 3.5 Flash

How much does Gemini 3.5 Flash cost via the API?+

Pricing on WaveSpeedAI: $1.50 per million input tokens and $9.00 per million output tokens. Prompt caching and batch processing are billed separately and reduce effective cost on long, repetitive workloads.

What is the context window of Gemini 3.5 Flash?+

Gemini 3.5 Flash supports up to 1049K tokens of context with up to 66K tokens of output per request.

Is Gemini 3.5 Flash OpenAI-compatible?+

Yes. WaveSpeedAI exposes Gemini 3.5 Flash through an OpenAI-compatible endpoint at https://llm.wavespeed.ai/v1. Point the official OpenAI SDK at this base URL with your WaveSpeedAI API key — no other code changes required.

How do I get started with Gemini 3.5 Flash?+

Sign in to WaveSpeedAI, create an API key in Access Keys, then send a request to https://llm.wavespeed.ai/v1/chat/completions with model id set to the value shown above. New accounts receive free credits to evaluate Gemini 3.5 Flash before paying per token.

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