Google Gemini API beginner's guide — what it is, how it works, when to use it
With any new API, the hardest part is figuring out what it actually does and where it's useful. Let's start there.
What is Google Gemini API?
Google Gemini API — free tier is generous, multimodal (image + video + text).
Gemini is Google's model family. Big pluses: a real free tier (60 rpm), multimodal including video, tight integration with the Google ecosystem. Gemini 1.5 Pro supports up to 2M tokens of context — the largest in market. Downside: Hebrew still trails GPT-4 and Claude.
Who it's for
- Developers who want a free tier
- Video/image processing
- Huge-context tasks
- Google-ecosystem integrations
A first example
Here is the shortest path to seeing something work:
import { GoogleGenerativeAI } from "@google/generative-ai";
const genAI = new GoogleGenerativeAI(process.env.GEMINI_API_KEY);
const model = genAI.getGenerativeModel({ model: "gemini-1.5-flash" });
const result = await model.generateContent("הסבר בקצרה מה זה Next.js");
console.log(result.response.text());When to use it, when not to
Google Gemini API is a great fit for most of what it covers, but not every case. If you only need small, static data once or twice, it may be simpler to download and cache locally. For real products that need fresh data, the API is the way.