ModelStack

Introduction

What is ModelStack?

ModelStack is a unified API gateway for AI models. Instead of managing separate API keys, SDKs, and billing accounts for each AI provider, ModelStack gives you one API, one key, and one bill.

Key Features

cable

Unified API

Access Claude, GPT, Gemini, DeepSeek, and more through a single OpenAI-compatible endpoint. Switch models by changing one parameter.

neurology

50+ Models

Anthropic Claude 4.x, OpenAI GPT-5.x, Google Gemini 3.x, DeepSeek V4, MiniMax M2, Qwen3, GLM 5 — all available instantly.

credit_card

Simple Billing

Time-windowed spending caps reset every 5 hours. Purchase prepaid balance for additional usage — expires after 12 months.

analytics

Dashboard & Analytics

Real-time usage analytics, request logs, model breakdown charts, and API key management from a single dashboard.

How It Works

  1. Sign up at modelstack.cc and choose a plan
  2. Create an API key from your dashboard
  3. Make requests to api.modelstack.cc using any OpenAI-compatible SDK
  4. Switch models freely — just change the model parameter
bash
curl https://api.modelstack.cc/v1/chat/completions \
  -H "Authorization: Bearer your_api_key" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-sonnet-4-6",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Why ModelStack?

  • No provider lock-in — switch between Anthropic, OpenAI, Google, DeepSeek, and more with zero code changes
  • OpenAI-compatible — works with existing OpenAI SDKs in Python, Node.js, and any language
  • Predictable costs — time-windowed spending caps reset every 5 hours; prepaid balance expires after 12 months
  • Built for developers — simple REST API, streaming support, comprehensive error codes
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