AI API for Developers: Build with 35+ Models Using One SDK

Published September 17, 2026 · 5 min read

As a developer, you want to build with the best AI models without managing multiple API integrations. An AI API gateway gives you one endpoint, one SDK, and one key — with access to 35+ models from DeepSeek, OpenAI, Anthropic, Google, Alibaba, Xiaomi, and more.

What Makes a Great AI API for Developers?

• OpenAI compatibility — use existing SDKs, no new libraries to learn
• Multi-model access — switch models by changing one parameter
• Streaming support — real-time responses for chat and agent use cases
• Tool calling — function calling across 28+ models
• Predictable pricing — flat-rate tiers, not per-token surprises

Quick Start: Python

from openai import OpenAI

client = OpenAI(
    base_url="https://api.ai24x.com/v1",
    api_key="your-api-key"
)

# DeepSeek for coding
response = client.chat.completions.create(
    model="flash",
    messages=[{"role": "user", "content": "Write a Python function to merge two sorted lists"}]
)
print(response.choices[0].message.content)

Quick Start: Node.js

import OpenAI from "openai";
const client = new OpenAI({
  baseURL: "https://api.ai24x.com/v1",
  apiKey: "your-api-key"
});
const response = await client.chat.completions.create({
  model: "pro",
  messages: [{ role: "user", content: "Explain quantum computing in simple terms" }]
});
console.log(response.choices[0].message.content);

Quick Start: curl

curl https://api.ai24x.com/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer your-api-key" \
  -d '{"model": "flash", "messages": [{"role": "user", "content": "Hello!"}]}'

Available Models

With AI24X, you can switch between any of these models by changing the model parameter:

• DeepSeek — V3, R1, Flash (best value for coding and reasoning)
• OpenAI — GPT-6, GPT-5 (complex reasoning, planning)
• Anthropic — Claude Opus (long context, analysis)
• Alibaba — Qwen Max, Qwen 122B (multilingual, strong benchmarks)
• Xiaomi — MiMo V2.5 (fast, cost-effective)
• Google — Gemini Pro (multimodal)
• Others — Kimi, GLM, Minimax, and more

Developer Features

• Streaming — supported on all models
• Tool/function calling — 28 out of 29 VIP models
• Cost dashboard — see spending per model, per day
• BYOK — bring your own API keys for $9.9/mo
• Free tier — start building without a credit card

Get Your API Key →