なぜ AI モデルは自分のバージョンを知らないのですか？

from openai import OpenAI

client = OpenAI(
    api_key="your-api-key",
    base_url="https://vip.apiyi.com/v1"
)

response = client.chat.completions.create(
    model="claude-sonnet-4-5-20250514",
    messages=[
        {
            "role": "system",
            "content": "You are Claude Sonnet 4.5, an AI assistant developed by Anthropic."
        },
        {
            "role": "user",
            "content": "What model are you?"
        }
    ]
)

print(response.choices[0].message.content)
# Output: I am Claude Sonnet 4.5, developed by Anthropic.