Poe API

Claude-Sonnet-4.5

Claude Sonnet 4.5 represents a major leap forward in AI capability and alignment. It is the most advanced model released by Anthropic to date, distinguished by dramatic improvements in reasoning, mathematics, and real-world coding. Supports 1m tokens of context. To instruct the bot to use more thinking effort, add `--thinking_budget` and a number ranging from 0 to 31,999 to the end of your message. Use `--web_search true` to enable web search and real-time information update. This is disabled by default.

OFFICIAL

Build with Claude-Sonnet-4.5 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-4.5",
    messages = [{
      "role": "user",
      "content": "Create a webpage where I can heavily stylize and dramatize inputted text in real-time"
    }]
)

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

See the full documentation for comprehensive guidance on getting started.