AI API
Language models through one API
A unified API to leading language models. OpenAI SDK compatible, billed by actual usage, with a single key for every model.
Two ways in
One product, two paths to AI
Alex Code gives you both an agent in the web panel and an API key. Work in the browser without code, or integrate programmatically — whichever suits you.
Alex in the web panel
Connect a VPS or website and let Alex build sites, applications and projects right in your browser — without writing a single line of code.
- Build websites and deploy applications
- Server management, backups and monitoring
- No installation, everything in the browser
API key for developers
The same access to models, programmatically. Plug the OpenAI-compatible endpoint into your own applications and integrations.
- OpenAI-compatible endpoint
- Usage-based token billing
- One key for every model
Capabilities
Everything you need from an API
Built on standards you already know. Integration takes minutes.
OpenAI compatible
Standard /v1/chat/completions endpoint. Just change the base URL and key in your existing code.
Leading models
Claude, GPT and Gemini under one interface. Switch models with a single parameter.
Usage-based billing
Pay only for the tokens you actually process. No flat fees and no minimum commitments.
One key
A single API key for every model and provider. Manage and rotate keys in your client area.
Limits and quotas
Configurable rate limits protect both your key and your budget. You stay in control of every request.
No vendor lock-in
A standard interface means migrating in or out is a single line of configuration.
Quick start
Three lines and you are live
If you use the official OpenAI library, just swap the base URL and key. The rest of your code stays the same.
- Works with the OpenAI SDK for Python, Node.js and more
- Response streaming and tool calling supported
- Same request and response shape across models
from openai import OpenAI
client = OpenAI(
base_url="https://coresynth.io/v1",
api_key="cs-••••••••••••••••",
)
response = client.chat.completions.create(
model="claude-sonnet-4-6",
messages=[{"role": "user", "content": "Ahoj!"}],
)
print(response.choices[0].message.content)Available models
Choose your model
The model lineup keeps growing. Switching between them is a single parameter.
GLM 5.3 Flash
1 310 720 token context
DeepSeek V4 Flash
1 048 576 token context
GLM 5.3
1 310 720 token context
Tencent Hy4 Preview
1 048 576 token context
Qwen3.8 27B
1 000 000 token context
DeepSeek V4 Pro
1 048 576 token context
MiMo V2.5
1 050 000 token context
MiMo V2.5 Pro
1 050 000 token context
MiniMax M3
1 048 576 token context
Kimi K2.7 Code
262 144 token context
Grok 4.3
1 000 000 token context
Gemini 3.5 Flash
1 048 576 token context
Gemini 3.1 Pro
1 048 576 token context
GPT 5.5
1 050 000 token context
Claude Sonnet 4.6
1 000 000 token context
Claude Opus 4.8
1 000 000 token context
Pricing follows each model's token usage. Current rates are available in your client area.
Get Started Today
Launch your project in minutes
Free registration, 24/7 support, no hidden fees.
CORESYNTH.IO