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GPT 5.3 Codex
gpt-5.3-codex Cursor 自定义模型请填：spt-5.3-codexOpenAI Codex 编程专用模型（Responses/Chat）。刊例 $1.75/$14 per 1M tokens。
API 端点
- 对话补全（chat.completions）
- Responses API（responses）
- openai
售价
Token 计费相对官方 0.5折
- 特价输入¥0.9/ 1M输出¥4.5/ 1M缓存¥0.09/ 1M
API Key 可绑定固定分组；未绑定时每次请求自动选当前最低价分组。
本 Tab 支持stream
model逻辑模型编码，来自已发布模型列表
GPT 5.3 Codex (gpt-5.3-codex)
stream是否 SSE 流式返回（仅 Chat）
false（一次性 JSON）
max_tokens生成 token 上限
user message对话用户消息 content
curl -X POST 'https://api.4stoken.cn/api/v1/chat/completions' \
-H 'Content-Type: application/json' \
-H 'Authorization: Bearer YOUR_API_KEY' \
--data-raw '{"model":"gpt-5.3-codex","messages":[{"role":"user","content":"Hello"}],"max_tokens":1024,"stream":false}'