GPT 5.3 Chat
OpenAI
openai/gpt-5.3-chat
GPT-5.3 Chat β previous generation flagship chat model
Context Window
128K
128,000 tokens
Max Output
33K
32,768 tokens
Capabilities
ChatVisionCodepdftools
Aliases
gpt-5.3-chatPricing (per 1M tokens)
| Pricing (per 1M tokens) | / 1M tokens |
|---|---|
| Input / 1M | $1.84 |
| Output / 1M | $14.70 |
Final prices shown
Quick Start
main.py
from openai import OpenAI client = OpenAI( base_url="https://api.chuizi.ai/v1", api_key="ck-your-key-here", ) response = client.chat.completions.create( model="openai/gpt-5.3-chat", messages=[{"role": "user", "content": "Hello!"}], ) print(response.choices[0].message.content)