Poe API

Claude-Sonnet-4

Claude Sonnet 4 from Anthropic, supports customizable thinking budget (up to 30k tokens) and 1m context window. To instruct the bot to use more thinking effort, add --thinking_budget and a number ranging from 0 to 30,768 to the end of your message.

OFFICIAL

Build with Claude-Sonnet-4 using the Poe API

Start by creating an API key, for use with any bot on Poe:

Generate API key

Code samples

python

import openai

client = openai.OpenAI(
    api_key = "YOUR_POE_API_KEY",  # or os.getenv("POE_API_KEY")
    base_url = "https://api.poe.com/v1",
)

chat = client.chat.completions.create(
    model = "claude-sonnet-4",
    messages = [{
      "role": "user",
      "content": "Write a haiku that captures the beauty of nature and the transitions of the seasons"
    }]
)

print(chat.choices[0].message.content)

See the full documentation for comprehensive guidance on getting started.