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Anthropic·Textnew比官方便宜 30%+

Claude Opus 5 FastAPI

Opus 5 tuned for latency — same frontier reasoning, faster output, 200K context.

輸入價格

$7.00

per 1M tokens

輸出價格

$35.00

per 1M tokens

Prompt 快取

給穩定 prefix 加 cache_control，命中按 input 價的一小部分計費。cache_write 按 input 原價計費。

Cache read
$0.7

按 input × 0.1 自動派生

引數

模型 ID
claude-opus-5-fast
端點
POST /v1/chat/completions
類別
Text
供應商
Anthropic
能力
visionfunctionstreamingthinkinglong-context

無縫相容 OpenAI SDK

把 OpenAI SDK 的 base_url 指向 api.kunavo.com/v1，換 model id 即可。流式、工具呼叫、SDK 行為完全一致。

檢視文件Claude API pricing guide

立即試用

在 /app/keys 建立 API key，複製為 KUNAVO_API_KEY，然後任選下面一段程式碼執行。

curl
curl https://api.kunavo.com/v1/chat/completions \
  -H "Authorization: Bearer $KUNAVO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-opus-5-fast",
    "messages": [
      {"role": "user", "content": "Hello, Claude Opus 5 Fast"}
    ],
    "stream": false
  }'

Kunavo 與直連 Anthropic 的差異

同一個 Claude Opus 5 Fast，同樣的輸出。閘道改變的是帳號、SDK 與帳單——以下是如實對照。

Kunavo直連 Anthropic
價格（per 1M tokens）$7.00 / $35.00 (−30%)$10.00 / $50.00
帳號一個 Kunavo 帳號，2 分鐘取得 Key，最低儲值 $5需要 Anthropic 帳號，並另外設定其計費
SDK繼續用 OpenAI SDK——改 base_url，model 填 "claude-opus-5-fast"Anthropic 官方 SDK，或其提供的 OpenAI 相容層
同一把 Key 還能呼叫Claude、Gemini、GPT 以及影像、影片、音訊模型僅 Anthropic 自家模型
計費一個 Stripe 餘額，用多少付多少，餘額不過期；失敗請求不計費每家廠商一張獨立帳單
速率限制共享閘道容量，無帳號層級的合約限額Anthropic 自家級距限額，可依用量或合約調升

若你需要合約級速率限制、企業 SLA，或首日就要用到廠商獨有功能，直連 Anthropic 較合適。若你想要一把 Key、一張帳單，並在所有廠商上取得更低單價，就用 Kunavo。

FAQ

How much does Claude Opus 5 Fast cost?

On Kunavo, Claude Opus 5 Fast is $7.00 per 1M input tokens and $35.00 per 1M output tokens — about 30% under Anthropic's official price. Failed requests are never billed, and it's pay-as-you-go — you only pay for successful calls.

Can I call Claude Opus 5 Fast with the OpenAI SDK?

Yes. Set base_url to https://api.kunavo.com/v1, pass your Kunavo key, and set model to "claude-opus-5-fast". Requests and responses are OpenAI-compatible; Claude is also available on the native /v1/messages endpoint.

What endpoint does Claude Opus 5 Fast use?

Claude Opus 5 Fast is called via POST /v1/chat/completions on Kunavo's OpenAI-compatible API.

What is Claude Opus 5 Fast good for?

Claude Opus 5 Fast is a text model from Anthropic, with support for vision, function, streaming, thinking, long-context.

What is different from calling Anthropic directly?

The model is the same, at about 30% under Anthropic's list price. What changes is around it: one key and one Stripe balance instead of a Anthropic account with its own billing, the OpenAI SDK with base_url swapped instead of a provider-specific SDK, and the same key also reaching Claude, Gemini, GPT, image, video and audio models. The tradeoff is that gateway capacity is shared — if you need a contractual rate limit or an enterprise SLA on Claude Opus 5 Fast specifically, go direct to Anthropic.

Is Claude Opus 5 Fast cheaper on Kunavo?

Yes — Claude Opus 5 Fast is about 30% under Anthropic's official list price on Kunavo, with no subscription and no minimum monthly spend. You pay per token from a $5 top-up, failed requests are never billed, and the balance never expires.

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