Apifuse — OpenAI-Compatible API Gateway (GPT-5, Claude, Gemini)

OpenAI-compatible API for GPT-5, Claude and Gemini. Multi-provider routing, transparent pricing, low latency. Enterprise SLA, SDK support, pay-as-you-go.

One unified OpenAI-compatible endpoint for GPT-5, Claude and Gemini. Migrate from OpenAI in minutes by simply changing your base URL to https://api.apifuse.net/v1 — keep your existing SDKs with no code rewrite. Multi-provider routing ensures low latency and high uptime, with transparent pricing, an enterprise SLA and global CDN acceleration.

Quick Start

Create an API key, point your client at the Apifuse base URL, and call any of the 500+ models from the Model Market.

OpenAI-Compatible Endpoints

Every endpoint mirrors the OpenAI request and response shapes, so existing tooling, SDKs and prompts work unchanged.

Chat Completion API

Standard /v1/chat/completions with streaming and non-streaming modes. Works with GPT-5, Claude and Gemini through the same schema.

# Chat Completion — OpenAI-compatible
curl https://api.apifuse.net/v1/chat/completions \
  -H "Authorization: Bearer <token>" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-5",
    "messages": [{ "role": "user", "content": "Hello" }],
    "stream": true
  }'

Image Creation API

Generate and edit images via /v1/images/generations across Nano Banana, GPT Image and Imagen — with per-resolution pricing tiers.

Video Creation API

Asynchronous video generation via /v1/videos for Sora, Veo and Kling. Submit a job, poll for completion, and pay only for successful renders.

Platform Benefits

SDKs & Code Examples

Use the official OpenAI SDKs — only the base URL changes.

Python SDK

from openai import OpenAI

client = OpenAI(
    api_key="<token>",
    base_url="https://api.apifuse.net/v1",
)

resp = client.chat.completions.create(
    model="gpt-5",
    messages=[{"role": "user", "content": "Hello"}],
)
print(resp.choices[0].message.content)

Node.js SDK

import OpenAI from "openai";

const client = new OpenAI({
  apiKey: "<token>",
  baseURL: "https://api.apifuse.net/v1",
});

const resp = await client.chat.completions.create({
  model: "gpt-5",
  messages: [{ role: "user", content: "Hello" }],
});
console.log(resp.choices[0].message.content);