GPT 5 Pro
OpenAI
openai/gpt-5-pro
Reasoning model, 272K context
Context Window
272K
272,000 tokens
Max Output
128K
128,000 tokens
About this model
GPT-5 Pro β extended reasoning with maximum capability
This model supports up to 272K tokens of context. It includes native vision understanding for analyzing images and documents. It excels at complex reasoning, mathematical problems, and multi-step tasks. It provides strong code generation and debugging capabilities.
Access it through Chuizi.AI with a single ck- API key β no separate OpenAI account needed.
Highlights
272K context window
128K max output
Advanced reasoning
Native vision support
Strong code generation
Best For
Complex coding tasksAlgorithm designCode reviewTechnical architecture
2025-10-06
Capabilities
ChatVisionReasoningCodepdftoolscache
Aliases
gpt-5-proPricing (per 1M tokens)
| Pricing (per 1M tokens) | / 1M tokens |
|---|---|
| Input / 1M | $15.75 |
| Output / 1M | $126.00 |
| Cache Read | $1.58 |
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-pro", messages=[{"role": "user", "content": "Hello!"}], ) print(response.choices[0].message.content)