Google Gemini API

by ai.google.dev

AI models and chat Added on October 31st, 2026 Checked and working on November 1st, 2026

What it does

The Gemini API from Google gives access to the Gemini family of AI models for text generation, chat, summarising, coding, image and document understanding, speech, embeddings and function calling. Call it over REST or with the official SDKs for Python, JavaScript, Go and more, and try prompts first in Google AI Studio. Free tier for most text, speech and embedding models with a free API key and rate limits; content sent on the free tier may be used by Google to improve its products, so use the paid tier for private data.

API
JSON
REST

At a glance

API key: Needed, free · More APIs with a free key
Pricing: Free tier for most text, speech and embedding models with a free API key and rate limits; content sent on the free tier may be used by Google to improve its products, so use the paid tier for private data.
From the browser: Yes (CORS)
Formats: JSON
Interface: REST
Provider: ai.google.dev
Last checked: Working on November 1st, 2026

More information: https://ai.google.dev/gemini-api/docs

Compare: Google Gemini API vs Groq API

Used in: Build a chatbot on free AI API tiers

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HTML

<a href="https://free-web-services.com/web-services/ai/llm/google-gemini-api.html"><img src="https://free-web-services.com/badge.svg" width="208" height="44" alt="Listed on Free Web Services" /></a>

Markdown

[![Listed on Free Web Services](https://free-web-services.com/badge.svg)](https://free-web-services.com/web-services/ai/llm/google-gemini-api.html)

Example request

curl

curl -X POST 'https://generativelanguage.googleapis.com/v1beta/models/gemini-3.8-flash:generateContent' \
  -H 'x-goog-api-key: YOUR_API_KEY' \
  -H 'Content-Type: application/json' \
  -d '{"contents": [{"parts": [{"text": "hello"}]}]}'

JavaScript

const response = await fetch("https://generativelanguage.googleapis.com/v1beta/models/gemini-3.8-flash:generateContent", {
  method: 'POST',
  headers: {
    "x-goog-api-key": "YOUR_API_KEY",
    "Content-Type": "application/json",
  },
  body: JSON.stringify({"contents":[{"parts":[{"text":"hello"}]}]}),
});
const data = await response.json();
console.log(data);

Python

import requests

response = requests.post(
    "https://generativelanguage.googleapis.com/v1beta/models/gemini-3.8-flash:generateContent",
    headers={
        "x-goog-api-key": "YOUR_API_KEY",
        "Content-Type": "application/json",
    },
    json={
        "contents": [
            {
                "parts": [
                    {
                        "text": "hello",
                    },
                ],
            },
        ],
    },
    timeout=30,
)
print(response.json())

Replace YOUR_API_KEY with your own key. The JavaScript works in a web page as well as in Node.js 18 or newer.