Claude Subscription Guide 2026

from anthropic import Anthropic
import os

client = Anthropic(api_key=os.getenv("ANTHROPIC_API_KEY"))

def chat_with_claude(message):
    response = client.messages.create(
        model="claude-3-5-sonnet-20241022",
        max_tokens=1024,
        messages=[
            {"role": "user", "content": message}
        ]
    )
    return response.content[0].text

# Usage
response = chat_with_claude("Explain quantum computing simply")
print(response)

const Anthropic = require('@anthropic-ai/sdk');

const anthropic = new Anthropic({
  apiKey: process.env.ANTHROPIC_API_KEY,
});

async function chatWithClaude(message) {
  const response = await anthropic.messages.create({
    model: "claude-3-5-sonnet-20241022",
    max_tokens: 1024,
    messages: [
      { role: "user", content: message }
    ],
  });

  return response.content[0].text;
}

// Usage
chatWithClaude("Explain quantum computing simply")
  .then(response => console.log(response));