Poe API

Claude-Opus-4.5

Claude Opus 4.5 from Anthropic, supports customizable thinking budget (up to 64k tokens) and 200k context window. Optional parameters: Set thinking budget to use more thinking effort. Set number from 0 to 63,999. Set output effort: Select from `low`, `medium`, `high`. Set to `high` by default. Set web search and real-time information access: toggle it on, otherwise it is off by default.

OFFICIAL

Build with Claude-Opus-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-opus-4.5",
    messages = [{
      "role": "user",
      "content": "There are three people—Anne, Bob, and Clara—standing in a line. Anne is not in front. Bob is not behind Clara. In what order are they standing?"
    }]
)

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

See the full documentation for comprehensive guidance on getting started.