Claude Sonnet 4.5 Thinking

curl https://www.anyfast.ai/v1/messages \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-sonnet-4-5-20250929-thinking",
    "messages": [
      { "role": "user", "content": "逐步求解：一列火车用 2 小时行驶 120 公里，然后减速用 3 小时行驶 80 公里，整个行程的平均速度是多少？" }
    ]
  }'

from openai import OpenAI

client = OpenAI(
    api_key="YOUR_API_KEY",
    base_url="https://www.anyfast.ai/v1"
)

response = client.chat.completions.create(
    model="claude-sonnet-4-5-20250929-thinking",
    messages=[
        {"role": "user", "content": "逐步求解：一列火车用 2 小时行驶 120 公里，然后减速用 3 小时行驶 80 公里，整个行程的平均速度是多少？"}
    ]
)

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

from openai import OpenAI

client = OpenAI(
    api_key="YOUR_API_KEY",
    base_url="https://www.anyfast.ai/v1"
)

stream = client.chat.completions.create(
    model="claude-sonnet-4-5-20250929-thinking",
    messages=[
        {"role": "user", "content": "证明素数有无穷多个。"}
    ],
    stream=True
)

for chunk in stream:
    print(chunk.choices[0].delta.content or "", end="")