Claude Sonnet 4.5 | Anthropic LLM API Pricing & Performance

Name: Claude Sonnet 4.5 API
Brand: anthropic
Price: 2.7 USD
Availability: InStock

API 使用

使用以下程式碼範例整合我們的 API：

from openai import OpenAI

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

response = client.chat.completions.create(
    model="anthropic/claude-sonnet-4.5",
    messages=[
        {"role": "user", "content": "Hello!"}
    ]
)

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

模型介紹

Anthropic claude-sonnet-4.5

anthropic claude-sonnet-4.5

Why It Looks Great

Large Language Model architecture for efficient processing
1000000 context window for long document handling
Competitive pricing at $3.3/$16.5 per million tokens

Key Features

Context Window: 1000000 tokens
Max Output: 64000 tokens
Vision: Supported
Function Calling: Supported

Specifications

Specification	Value
Provider	Anthropic
Model Type	Large Language Model (LLM)
Architecture	N/A
Context Window	1000000 tokens
Max Output	64000 tokens
Input	Text
Output	Text
Vision	Supported
Function Calling	Supported

Pricing

Token Type	Cost per Million Tokens
Input	$3.3
Output	$16.5

How to Use

Write your prompt — describe the task, provide context, and specify desired output format.
Submit — the model processes your request and returns the response.

API Integration

Base URL: https://llm.wavespeed.ai/v1 API Endpoint: chat/completions Model ID: anthropic/claude-sonnet-4.5

API Usage

Python SDK

from openai import OpenAI

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

response = client.chat.completions.create(
    model="anthropic/claude-sonnet-4.5",
    messages=[
        {"role": "user", "content": "Hello!"}
    ]
)

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

cURL

curl https://llm.wavespeed.ai/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "model": "anthropic/claude-sonnet-4.5",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Notes

Model: anthropic/claude-sonnet-4.5
Provider: Anthropic

關於 Claude Sonnet 4.5 的常見問題

Claude Sonnet 4.5 API 多少錢?+

WaveSpeedAI 定價:輸入每百萬 token $2.70,輸出每百萬 token $13.50。Prompt 快取與批次處理分別計費,可顯著降低長上下文、高重複任務的實際成本。

Claude Sonnet 4.5 的上下文視窗有多大?+

Claude Sonnet 4.5 每次請求最多支援 1000K 上下文 token,輸出最多 64K token。

Claude Sonnet 4.5 是否相容 OpenAI?+

是的。WaveSpeedAI 透過 https://llm.wavespeed.ai/v1 的 OpenAI 相容端點提供 Claude Sonnet 4.5。將官方 OpenAI SDK 的 base URL 指向該位址,使用 WaveSpeedAI 的 API Key 即可,無需其他程式碼變更。

如何開始使用 Claude Sonnet 4.5?+

登入 WaveSpeedAI,在 Access Keys 建立 API Key,使用上方顯示的 model id 向 https://llm.wavespeed.ai/v1/chat/completions 發送請求。新帳號將獲得免費額度,用於試用 Claude Sonnet 4.5。

定價