spb/doc-api

The Gemini API is the fastest path from prompt to production with Gemini, Veo, Nano Banana, and more. It lets you integrate these generative models into your applications to generate text and images, analyze multimodal inputs, and build conversational agents.

# Python

from google import genai

client = genai.Client()

response = client.models.generate_content(
    model="gemini-3.8-flash",
    contents="Explain how AI works in a few words",
)

print(response.text)

# JavaScript

import { GoogleGenAI } from "@google/genai";

const ai = new GoogleGenAI({});

async function main() {
  const response = await ai.models.generateContent({
    model: "gemini-3.8-flash",
    contents: "Explain how AI works in a few words",
  });
  console.log(response.text);
}

await main();

# Go

package main

import (
    "context"
    "fmt"
    "log"
    "google.golang.org/genai"
)

func main() {
    ctx := context.Background()
    client, err := genai.NewClient(ctx, nil)
    if err != nil {
        log.Fatal(err)
    }

    result, err := client.Models.GenerateContent(
        ctx,
        "gemini-3.8-flash",
        genai.Text("Explain how AI works in a few words"),
        nil,
    )
    if err != nil {
        log.Fatal(err)
    }
    fmt.Println(result.Text())
}

# Java

package com.example;

import com.google.genai.Client;
import com.google.genai.types.GenerateContentResponse;

public class GenerateTextFromTextInput {
  public static void main(String[] args) {
    Client client = new Client();

    GenerateContentResponse response =
        client.models.generateContent(
            "gemini-3.8-flash",
            "Explain how AI works in a few words",
            null);

    System.out.println(response.text());
  }
}

# C#

using System.Threading.Tasks;
using Google.GenAI;
using Google.GenAI.Types;

public class GenerateContentSimpleText {
  public static async Task main() {
    var client = new Client();
    var response = await client.Models.GenerateContentAsync(
      model: "gemini-3.8-flash", contents: "Explain how AI works in a few words"
    );
    Console.WriteLine(response.Candidates[0].Content.Parts[0].Text);
  }
}

# REST

curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-3.8-flash:generateContent" \
  -H "x-goog-api-key: $GEMINI_API_KEY" \
  -H 'Content-Type: application/json' \
  -X POST \
  -d '{
    "contents": [
      {
        "parts": [
          {
            "text": "Explain how AI works in a few words"
          }
        ]
      }
    ]
  }'

Start building

# Meet the models

View all Gemini 3.1 Pro New Our most intelligent model, the best in the world for multimodal understanding, all built on state-of-the-art reasoning. Gemini 3.6 Flash New Our latest model that balances speed with intelligence to deliver strong performance in agentic and multimodal tasks. Gemini 3.5 Flash Frontier-class performance rivaling larger models at a fraction of the cost. Gemini 3.5 Flash-Lite New High-volume, cost-sensitive model optimized for low-latency high throughput subagent tasks. Gemini 3.1 Flash-Lite High-volume, cost-sensitive model with the performance and quality of the Gemini 3 series. Gemini 3 Flash Frontier-class performance rivaling larger models at a fraction of the cost. Nano Banana 2 and Nano Banana Pro State-of-the-art image generation and editing models. Veo 3.1 Our state-of-the-art video generation model, with native audio. Gemini Robotics A vision-language model (VLM) that brings Gemini's agentic capabilities to robotics and enables advanced reasoning in the physical world.

# Explore Capabilities

Native Image Generation (Nano Banana) Generate and edit highly contextual images natively with Gemini 2.5 Flash Image. Long Context Input millions of tokens to Gemini models and derive understanding from unstructured images, videos, and documents. Structured Outputs Constrain Gemini to respond with JSON, a structured data format suitable for automated processing. Function Calling Build agentic workflows by connecting Gemini to external APIs and tools. Video Generation with Veo 3.1 Create high-quality video content from text or image prompts with our state-of-the-art model. Voice Agents with Live API Build real-time voice applications and agents with the Live API. Tools Connect Gemini to the world through built-in tools like Google Search, URL Context, Google Maps, Code Execution and Computer Use. Document Understanding Process up to 1000 pages of PDF files with full multimodal understanding or other text-based file types. Thinking Explore how thinking capabilities improve reasoning for complex tasks and agents. Google AI Studio Test prompts, manage your API keys, monitor usage, and build prototypes. Developer Community Ask questions and find solutions from other developers and Google engineers. API Reference Find detailed information about the Gemini API in the official reference documentation. Status Check the status of Gemini API, Google AI Studio, and our model services.