Developer API

Claude Max API

Access all Claude AI models through a single, powerful API. Build intelligent applications with Opus 5, Fable 5, Opus 4, Sonnet 4, and Haiku.

Quick Start
1

Get Your API Key

Sign up for a free trial and get your API key from the dashboard.

2

Make Your First Request

Use your API key to send a request to any Claude model.

3

Build & Scale

Integrate Claude Max into your applications and scale as needed.

cURL — Try the API
curl -X POST https://claudemaxhub.com/api/v1/chat \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-opus-5",
    "messages": [
      {"role": "user", "content": "Hello, Claude!"}
    ],
    "max_tokens": 1024
  }'
Available Models

All models included with your subscription — no extra cost.

Most Powerful

Claude Opus 5

claude-opus-5

Most powerful — advanced reasoning & complex analysis

200K tokens
Flagship

Claude Fable 5

claude-fable-5

Flagship model — 1M token context window

1M tokens
Deep Analysis

Claude Opus 4

claude-opus-4-8

Deep analysis & complex multi-step tasks

200K tokens
Balanced

Claude Sonnet 4

claude-sonnet-4

Best balance of speed and quality

200K tokens
Fastest

Claude Haiku

claude-haiku

Fastest responses — ideal for real-time applications

200K tokens

Ready to build with Claude Max?

Get your free API key with a 30-day trial. All 5 models included, no credit card charged.