Claude Opus 4.6 & Sonnet 5 API Integration: Developer Guide

TL;DR

Integrate Claude Opus 4.6 and Sonnet 5 using the Anthropic SDK. Key steps: install SDK, authenticate with API key, choose model, implement error handling. Typical integration takes 1-2 hours.

Quick Start

pip install anthropic

import anthropic
client = anthropic.Anthropic(api_key="your-key")
response = client.messages.create(
    model="claude-sonnet-5-20260215",
    max_tokens=4096,
    messages=[{"role": "user", "content": "Hello!"}]
)

Model Selection

• opus-4-6: Maximum capability
• sonnet-5: Best value (default)
• haiku-4-5: Speed/cost optimized

Conclusion

The Claude API provides a clean, consistent interface. Follow these patterns for reliable production deployments.