If you're a developer using AI APIs, you know the pain: separate accounts for OpenAI, separate for Anthropic, another for Google, yet another for DeepSeek. Each with its own billing, its own API key, its own SDK version.
I found a simpler way.
The Problem
Before, I had:
- OpenAI account: GPT-5.5 ($ billed separately)
- Anthropic account: Claude Opus 4.7 ($ billed separately)
- Google account: Gemini 2.5 Pro ($ billed separately)
- DeepSeek account: DeepSeek V4 Pro (¥ billed separately)
- Alibaba account: Qwen3 Max (¥ billed separately)
Keeping track of 5+ API keys, managing prepaid balances on each, and switching SDKs was painful.
The Solution
次元AI (Dimension AI) aggregates 800+ AI models behind a single OpenAI-compatible endpoint. One API key. One balance. All models.
The pricing is 0.95折 (95% off) vs official rates. For example:
- GPT-5.5: Official ~$10/1M tokens → ¥0.95/1M tokens
- Claude Opus 4.7: Official ~$3/1M tokens → ¥1.14/1M tokens
- DeepSeek V4 Pro: Official ¥1/1M tokens → ¥0.095/1M tokens
Code Example
from openai import OpenAI
# One client for ALL models
client = OpenAI(
base_url="https://ai.二次元.世界/v1",
api_key="your-key"
)
# Use any model with the same client
gpt = client.chat.completions.create(model="gpt-5.5", messages=[...])
claude = client.chat.completions.create(model="claude-opus-4-7", messages=[...])
deepseek = client.chat.completions.create(model="deepseek-v4-pro", messages=[...])
No need to switch SDKs, manage multiple API keys, or maintain separate billing.
Cost Comparison
For a typical AI application processing 10M tokens/month:
| Setup | Monthly Cost |
|---|---|
| Direct API (mixed usage) | ~$800-1200 |
| 次元AI (same usage) | ~$76-114 |
Annual savings: ~$8,700-13,000.
Get Started
- Register: ai.二次元.世界
- Get $0.2 free credit
- Start calling any model with one API key
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