OpenAI & Anthropic-Compatible API

One API. Every Model.
Unbeatable Prices.

Access DeepSeek V4, DeepSeek R1, MiMo, TTS, and ASR models through a single unified endpoint — up to 82% cheaper than major API marketplaces. Starting at just $0.19 / 277₩ per million tokens.

Quick Start
curl https://nexusaipro.xyz/v1/chat/completions \
  -H "Authorization: Bearer sk-nx-YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "deepseek-r1",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Why NexusAI?

💰

Extremely Affordable

Up to 90% cheaper than GPT-4o. Powerful models at a fraction of the cost, with transparent per-token pricing.

🔌

Drop-in Compatible

Fully OpenAI- and Anthropic-compatible API. Works with LangChain, LlamaIndex, OpenAI SDK, Claude Code, and any HTTP client.

🌍

Global Access

No Chinese phone number or payment method needed. Pay with credit card, PayPal, or Apple Pay via Paddle.

🧠

Deep Thinking (R1)

Access DeepSeek R1 reasoning model for complex math, coding, and logic tasks at unbeatable prices.

🔊

Audio AI Suite

Text-to-Speech and Speech Recognition — all through one API.

🎁

Referral Rewards

Invite friends and earn 10% of their first top-up. Share your unique referral code and start earning.

Chat & Reasoning Models

Pay only for what you use. Prices shown in USD / KRW per 1M tokens.

deepseek-v4-flash

Ultra-fast, cost-effective inference

Input$0.19 / 277₩
Input (cached)$0.019 / 28₩
Output$0.39 / 554₩
Peak hours2x price
Start Using

deepseek-r1

Deep thinking model — math, code, logic

Input$0.69 / 989₩
Input (cached)$0.175 / 252₩
Output$2.74 / 3937₩
Peak hoursNo surcharge
Start Using

mimo-v2.5

Fast and efficient for everyday tasks

Input$0.19 / 277₩
Input (cached)$0.019 / 28₩
Output$0.39 / 554₩
Start Using

mimo-2.5-pro

Advanced reasoning and complex tasks

Input$0.58 / 832₩
Input (cached)$0.058 / 83₩
Output$1.16 / 1,662₩
Start Using

Peak hours for DeepSeek v4 models only: 09:00–12:00 & 14:00–18:00 (Beijing Time, UTC+8). DeepSeek R1 is not affected.

Why NexusAI? Real savings vs. major API marketplaces

Compared with public list prices of large resellers (e.g. AIHubMix), August 2026. Per 1M tokens.

ModelTypical resellerNexusAIYou save
DeepSeek V4-Flash — input$0.55$0.1965%
DeepSeek V4-Flash — output$2.20$0.3982%
DeepSeek V4-Pro — input$1.69$0.6562%
DeepSeek V4-Pro — output$3.38$1.3062%

Official APIs only — no quantized or degraded models.

Audio AI Models

Text-to-Speech and Speech Recognition. Prices in USD / KRW per hour of audio.

mimo-v2.5-tts

Text-to-Speech synthesis

Price$0.044 / 64₩ per hour
Free tierFirst 8.66M tokens free
Start Using

mimo-v2.5-asr

Speech Recognition (audio to text)

Price$0.104 / 149₩ per hour
Start Using

Credit Packages

$1$5$10$25$50$100

Top up anytime. Credits never expire. Start with a $1 trial.

Integration Guide

Python (Chat / R1)

from openai import OpenAI

client = OpenAI(
    api_key="sk-nx-YOUR_KEY",
    base_url="https://nexusaipro.xyz/v1"
)

response = client.chat.completions.create(
    model="deepseek-r1",
    messages=[{"role": "user", "content": "Hi!"}]
)
print(response.choices[0].message.content)

Python (Text-to-Speech)

from openai import OpenAI

client = OpenAI(
    api_key="sk-nx-YOUR_KEY",
    base_url="https://nexusaipro.xyz/v1"
)

response = client.audio.speech.create(
    model="mimo-v2.5-tts",
    voice="alloy",
    input="Hello, welcome to NexusAI!"
)
response.stream_to_file("output.mp3")

Claude Code / Anthropic SDK

import Anthropic from "@anthropic-ai/sdk";

const client = new Anthropic({
  apiKey: "sk-nx-YOUR_KEY",
  baseURL: "https://nexusaipro.xyz",
});

const msg = await client.messages.create({
  model: "deepseek-v4-pro",
  max_tokens: 1024,
  messages: [{ role: "user", content: "Hi!" }],
});
console.log(msg.content[0].text);

// Claude Code (terminal):
//   export ANTHROPIC_BASE_URL="https://nexusaipro.xyz/v1"
//   export ANTHROPIC_API_KEY="sk-nx-YOUR_KEY"