Documentation
Everything you need to build with the Cheapa API API gateway.
Getting Started with Cheapa API
Cheapa API is an AI model gateway that gives your application access to 28 models across 9 provider families — including frontier models from OpenAI (GPT-5.2 through 5.5), Anthropic (Claude Opus 4.6 / 4.7 / 4.8 and Sonnet 4.6), and Google (Gemini 3.x, Gemma 4, plus image/video models like Veo 3.1 and Nano Banana) — alongside Kimi, MiniMax, DeepSeek, Alibaba Qwen, Z.AI GLM, and Xiaomi MiMo. All available through a single, OpenAI-compatible HTTP endpoint. Register once, load your account balance, and call any supported model using the same request format.
Customers typically save over 65% on AI API costs compared to going direct to providers — one API key, all models, a fraction of the cost.
🎁 Free $2 trial credit available on request. Not ready to deposit? Contact us to request trial credit and test any model before you commit.
What's in These Docs
| Section | What You'll Learn |
|---|---|
| Quickstart | Register, fund your account, and fire your first request |
| API Overview | Endpoint URLs, authentication headers, request/response schemas |
| Models | Full catalog of all 28 supported models with slugs, capabilities, and pricing |
| Billing | How prepaid balances work and how deductions are calculated |
| Integrations | Step-by-step setup for SDKs, CLI tools, and editors |
| Troubleshooting | Diagnose and resolve the most common API errors |
Your First API Call
curl https://api.cheapaapi.com/v1/chat/completions \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "kimi-k2.7-code",
"messages": [{"role": "user", "content": "Hello!"}]
}'At a Glance
- Endpoint:
https://api.cheapaapi.com/v1 - Authentication:
Authorization: Bearer <your-key> - Protocol: OpenAI Chat Completions format — fully compatible with existing SDKs
- Payment model: Prepaid balance, deducted per request — no monthly subscriptions
- Cost: Save over 65% vs going direct to providers
Head to the Quickstart to be up and running in minutes.
Community
Have questions, want to share what you're building, or need a hand? Join the Cheapa API community — the team and other developers are there.