GPT-5.3 Codex | OpenAI Agentic Coding Model API

Name: GPT 5.3 Codex API
Brand: openai
Price: 1.75 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="openai/gpt-5.3-codex",
    messages=[
        {"role": "user", "content": "Hello!"}
    ]
)

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

模型介紹

Openai gpt-5.3-codex

GPT-5.3-Codex is OpenAI’s most advanced agentic coding model, combining the frontier software engineering performance of GPT-5.2-Codex with the broade

GPT-5.3-Codex is OpenAI’s most advanced agentic coding model, combining the frontier software engineering performance of GPT-5.2-Codex with the broader reasoning and professional knowledge capabilities of GPT-5.2. It achieves state-of-the-art results on SWE-Bench Pro and strong performance on Terminal-Bench 2.0 and OSWorld-Verified, reflecting improved multi-language coding, terminal proficiency, and real-world computer-use skills. The model is optimized for long-running, tool-using workflows and supports interactive steering during execution, making it suitable for complex development tasks, debugging, deployment, and iterative product work. Beyond coding, GPT-5.3-Codex performs strongly on structured knowledge-work benchmarks such as GDPval, supporting tasks like document drafting, spreadsheet analysis, slide creation, and operational research across domains. It is trained with enhanced cybersecurity awareness, including vulnerability identification capabilities, and deployed with ad

Why It Looks Great

Large Language Model architecture for efficient processing
400000 context window for long document handling
Competitive pricing at $1.7/$14.0 per million tokens

Key Features

Context Window: 400000 tokens
Max Output: 128000 tokens
Vision: Supported
Function Calling: Supported

Specifications

Specification	Value
Provider	Openai
Model Type	Large Language Model (LLM)
Architecture	N/A
Context Window	400000 tokens
Max Output	128000 tokens
Input	Text
Output	Text
Vision	Supported
Function Calling	Supported

Pricing

Token Type	Cost per Million Tokens
Input	$1.7
Output	$14.0

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: openai/gpt-5.3-codex

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="openai/gpt-5.3-codex",
    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": "openai/gpt-5.3-codex",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Notes

Model: openai/gpt-5.3-codex
Provider: Openai

GPT 5.3 Codex API

openai/gpt-5.3-codex

關於 GPT 5.3 Codex 的常見問題

GPT 5.3 Codex API 多少錢?+

WaveSpeedAI 定價:輸入每百萬 token $1.75,輸出每百萬 token $14.00。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。

GPT 5.3 Codex 的上下文視窗有多大?+

GPT 5.3 Codex 每次請求最多支援 400K 上下文 token,輸出最多 128K token。

GPT 5.3 Codex 是否相容 OpenAI?+

是的。WaveSpeedAI 透過 https://llm.wavespeed.ai/v1 的 OpenAI 相容端點提供 GPT 5.3 Codex。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 GPT 5.3 Codex?+

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 GPT 5.3 Codex。

定價