Claude Opus 5.5 API

US Anthropic | 發布日期 2026-10

Claude Opus 5.5 is the Anthropic flagship, built for high-difficulty reasoning, serious code development and long-horizon agent tasks. It extends the Opus line’s strengths in sustained autonomy and nuanced instruction following, available through MeshTok with a million-token context window.

推理程式碼工具旗艦cap.vision

定價（官方列表，每 1M 個 Token）

輸入

$4.00/M

輸出

$20.00/M

規格

上下文視窗1000K 代幣輸入模態文字串流是 API相容 OpenAI

如何使用 Claude Opus 5.5

可直接取代 OpenAI。只需變更 base_url 和 model。

# Python - pip install openai
from openai import OpenAI

client = OpenAI(
    base_url="https://meshtok.com/v1",
    api_key="sk-your-MeshTok-key",
)

resp = client.chat.completions.create(
    model="anthropic/claude-opus-5.5",
    messages=[{"role":"user","content":"Hello!"}],
)
print(resp.choices[0].message.content)

# cURL
curl https://meshtok.com/v1/chat/completions \
  -H "Authorization: Bearer sk-your-MeshTok-key" \
  -H "Content-Type: application/json" \
  -d '{"model":"anthropic/claude-opus-5.5","messages":[{"role":"user","content":"Hello!"}]}'