The Complete Guide to
Claude AI

import anthropic

client = anthropic.Anthropic(
    api_key="your-api-key"
)

message = client.messages.create(
    model="claude-sonnet-4-6",
    max_tokens=1024,
    messages=[
        {
            "role": "user",
            "content": "Hello, Claude!"
        }
    ]
)

print(message.content[0].text)

import Anthropic from "@anthropic-ai/sdk";

const client = new Anthropic();

const stream = client.messages.stream({
    model: "claude-sonnet-4-6",
    max_tokens: 1024,
    messages: [{
        role: "user",
        content: "Write a poem"
    }]
});

for await (const chunk of stream) {
    process.stdout.write(chunk);
}