OpenAI SDK互換性

from openai import OpenAI

client = OpenAI(
    api_key="ANTHROPIC_API_KEY",  # あなたのClaude APIキー
    base_url="https://api.anthropic.com/v1/"  # Claude APIエンドポイント
)

response = client.chat.completions.create(
    model="claude-sonnet-4-5", # Anthropicモデル名
    messages=[
        {"role": "system", "content": "You are a helpful assistant."},
        {"role": "user", "content": "Who are you?"}
    ],
)

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

response = client.chat.completions.create(
    model="claude-sonnet-4-5",
    messages=...,
    extra_body={
        "thinking": { "type": "enabled", "budget_tokens": 2000 }
    }
)