1. Setting Up
Create an account at console.anthropic.com, set up billing, and generate an API key. Claude's API follows a similar pattern to OpenAI but with some unique parameters.
2. Making API Requests
Claude uses the Messages API. The structure is similar to OpenAI but with different parameter names and additional features like system prompts as a separate field.
python
from anthropic import Anthropic
client = Anthropic()
message = client.messages.create(
model="claude-sonnet-4-20250514",
max_tokens=1024,
system="You are a helpful assistant.",
messages=[
{"role": "user", "content": "Explain AI automation."}
]
)
print(message.content[0].text)3. Claude's Unique Features
Claude excels at following complex instructions, handling long documents (200K tokens), and maintaining consistent persona. It also supports vision (image analysis) and tool use for building agents.
Wrap-up
Claude is excellent for tasks requiring nuanced understanding and long-form content. Experiment with different models (Haiku for speed, Opus for complexity) to find the right fit.