Gemini 2.5 Pro — Free AI Model & API

Overview

Quick Start

Integrate Gemini 2.5 Pro with 3 lines of code. See the config generator for Claude Code, Cursor, and more.

from openai import OpenAI

client = OpenAI(
    base_url="https://generativelanguage.googleapis.com/v1beta",
    api_key="YOUR_API_KEY"
)

response = client.chat.completions.create(
    model="gemini-2-5-pro",
    messages=[{"role": "user", "content": "Hello!"}]
)
print(response.choices[0].message.content)

import OpenAI from "openai";

const openai = new OpenAI({
  baseURL: "https://generativelanguage.googleapis.com/v1beta",
  apiKey: "YOUR_API_KEY",
});

const completion = await openai.chat.completions.create({
  model: "gemini-2-5-pro",
  messages: [{ role: "user", content: "Hello!" }],
});

console.log(completion.choices[0].message.content);

curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-2-5-pro:generateContent?key=YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "contents": [{"parts": [{"text": "Hello!"}]}]
  }'

Other Free Models from Google Gemini

Rate Limits & Constraints

Features & Use Cases

How to Get a Free Google Gemini API Key

Follow these steps to get your free API key for Gemini 2.5 Pro. No credit card required — just sign up and start using the API.

1. Go to Google AI Studio aistudio.google.com — sign in with Google account.
2. Click "Get API Key" in the left nav
3. Create API key in a new or existing project
4. Pick a Gemini model Gemini 2.5 Flash recommended for best free limits.
5. Configure OpenAI client Base URL: https://generativelanguage.googleapis.com/v1beta

Playground — Test Gemini 2.5 Pro

Test Gemini 2.5 Pro directly in your browser. Your API key is sent directly to Google Gemini — never stored.

Frequently Asked Questions

More questions? See our full FAQ →

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