Overview
One API key for leading AI models, through OpenAI-compatible and Claude-native endpoints. Get connected in minutes.
AI Nexus is a model API gateway for developers: with one account and one API key you can call leading AI models through OpenAI-compatible and Claude-native endpoints, and manage API keys, usage and balance in a single console.
| Item | Value |
|---|---|
| Console | https://ai.myaiexp.com |
| Base URL (OpenAI SDK / OpenAI-compatible clients) | https://ai.myaiexp.com/v1 |
| Base URL (Anthropic SDK / Claude Code) | https://ai.myaiexp.com (no /v1) |
| Authentication | Header Authorization: Bearer <your API key>; the Claude-native endpoint also accepts x-api-key |
| Models and pricing (model square) | https://ai.myaiexp.com/pricing |
Start here
Introduction
Supported endpoints, and what API keys, balance and billing mean.
Quickstart
Sign up, create an API key and make your first call in a few minutes.
Console guide
API Keys
Create, copy, disable and delete keys; set quota, expiry and model restrictions.
Playground
Chat with models in the console without writing code.
Usage Logs
See the model, tokens, cost and latency of every call.
Wallet
Check balance and usage, top up or redeem a code, and understand billing.
Pricing
Browse all models, their prices and supported endpoint types.
Profile and security
Notifications, language preference, password, sign-in sessions and more.
Development
OpenAI SDK
Call the Chat Completions endpoint with the official OpenAI SDKs.
Streaming
Receive output as it is generated, for chat UIs.
Function calling
Let the model call tools you define.
Claude-native API
Call /v1/messages with the Anthropic SDK.
Prompt caching
Use cache_control on /v1/messages to cut the cost of repeated input.
Responses API
Call models that support the Responses API through /v1/responses.
Multimodal
Send images in your requests.
More
Integrations
Claude Code, Codex CLI, CC Switch, Cursor, Cline, Cherry Studio, LangChain, Dify.
API Reference
Request and response fields for Chat Completions, Responses, Messages and Models.
Troubleshooting
What common error codes mean and how to fix them.
FAQ
Base URL, model choice, billing, top-ups and more.
More models are added over time. The models currently available are listed on the model square and returned by GET /v1/models for your API key.
This service is provided for learning and research purposes only. Please follow each model provider's usage policies.