LLM
语言模型 API
Claude API 代理，按 Token 计费。兼容 Anthropic API 格式。
概述
Messages API 兼容官方 Anthropic API 格式，支持流式输出、图像识别、工具调用和扩展思考功能。
接口
POST
/api/v1/messages可用模型
价格单位：每 1M tokens
| 模型 | 输入 | 输出 | 描述 |
|---|---|---|---|
| claude-haiku-4-5-20251001 | $0.3530/1M | $1.7648/1M | 快速实惠 |
| claude-haiku-4-5-20251001-thinking | $0.3530/1M | $1.7648/1M | Haiku + 思考 |
| claude-sonnet-4-20250514 | $1.0589/1M | $5.2942/1M | 均衡性能 |
| claude-sonnet-4-20250514-thinking | $1.0589/1M | $5.2942/1M | Sonnet + 思考 |
| claude-sonnet-4-5-20250929 | $1.0589/1M | $5.2942/1M | Sonnet 4.5 |
| claude-sonnet-4-5-20250929-thinking | $1.0589/1M | $5.2942/1M | Sonnet 4.5 + 思考 |
| claude-sonnet-4-6 | $2.6471/1M | $13.2353/1M | 最新 Sonnet |
| claude-sonnet-4-6-thinking | $2.6471/1M | $13.2353/1M | 最新 Sonnet + 思考 |
| claude-opus-4-6 | $4.4118/1M | $22.0589/1M | 最新 Opus |
| claude-opus-4-6-thinking | $4.4118/1M | $22.0589/1M | 最新 Opus + 思考 |
| claude-opus-4-20250514 | $5.2942/1M | $26.4706/1M | Opus 4 |
| claude-opus-4-20250514-thinking | $5.2942/1M | $26.4706/1M | Opus 4 + 思考 |
| claude-opus-4-5-20251101 | $1.7648/1M | $8.8236/1M | Opus 4.5 |
| claude-opus-4-5-20251101-thinking | $1.7648/1M | $8.8236/1M | Opus 4.5 + 思考 |
请求参数
model必填string
使用的模型（见上表）
messages必填array
消息数组，包含 role（user/assistant）和 content
max_tokensinteger
最大生成 token 数，默认：1024
systemstring
系统提示词
streamboolean
启用流式响应，默认：false
temperaturenumber
采样温度（0-1），默认：1
thinkingobject
为 *-thinking 模型启用扩展思考
基本请求
curl -X POST https://apimodels.app/api/v1/messages \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "claude-sonnet-4-5-20250929",
"max_tokens": 1024,
"messages": [
{"role": "user", "content": "Hello, Claude!"}
]
}'响应
{
"id": "msg_01XFDUDYJgAACzvnptvVoYEL",
"type": "message",
"role": "assistant",
"content": [
{
"type": "text",
"text": "Hello! How can I help you today?"
}
],
"model": "claude-sonnet-4-5-20250929",
"stop_reason": "end_turn",
"usage": {
"input_tokens": 12,
"output_tokens": 10
}
}扩展思考
对于 *-thinking 模型，您可以启用扩展思考功能来处理复杂推理任务。
curl -X POST https://apimodels.app/api/v1/messages \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "claude-sonnet-4-5-20250929-thinking",
"max_tokens": 16000,
"thinking": {
"type": "enabled",
"budget_tokens": 10000
},
"messages": [
{"role": "user", "content": "Solve this step by step: What is 15% of 340?"}
]
}'流式响应
设置 stream: true 以接收 Server-Sent Events (SSE)。
curl -X POST https://apimodels.app/api/v1/messages \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "claude-sonnet-4-5-20250929",
"max_tokens": 1024,
"stream": true,
"messages": [
{"role": "user", "content": "Write a short poem about coding."}
]
}'计费
积分根据实际 token 使用量计算：
费用 = (input_tokens * 输入价格 + output_tokens * 输出价格) / 1,000,000 积分 = 费用(人民币) // 积分即为 ¥
错误码
400请求参数错误
401API 密钥无效或缺失
402积分不足
404模型不存在
429请求频率超限
500服务器内部错误