One API. Every AI Model.
Access 14+ AI providers through a single API. OpenAI-compatible format, pay-per-use credits, real-time streaming. No subscriptions, no vendor lock-in.
Supported Providers
Everything you need to integrate AI
A single API key unlocks every major AI model. No more managing multiple provider accounts.
Unified API
One API format compatible with OpenAI's SDK. Switch between providers by changing the model name.
Pay-Per-Use Credits
No monthly subscriptions. Buy credits and pay only for what you use. Transparent pricing with no hidden fees.
Streaming Support
Full Server-Sent Events streaming support for all chat completion models. Real-time token delivery.
14+ Providers
OpenAI, Anthropic, Google, Mistral, DeepSeek, Groq, Together, Fireworks, Cohere, Perplexity, and more.
Simple to integrate
Drop-in replacement for OpenAI. Just change the base URL and API key.
const response = await fetch("https://api.apexapi.dev/v1/chat/completions", {
method: "POST",
headers: {
"Authorization": "Bearer ak-your-api-key",
"Content-Type": "application/json",
},
body: JSON.stringify({
model: "anthropic/claude-sonnet-4-20250514",
messages: [{ role: "user", content: "Hello!" }],
stream: true,
}),
});Start building with AI today
Create an account, add credits, and make your first API call in under 2 minutes.