GPT 5.4
OpenAI
openai/gpt-5.4
Frontier reasoning, 1M context
Context Window
1.1M
1,050,000 tokens
Max Output
128K
128,000 tokens
About this model
Frontier reasoning, 1M context
Access it through Chuizi.AI with a single ck- API key — no separate upstream provider account needed.
Highlights
1M context
128K output
Vision and PDF
Tool calling
Best For
Complex reasoningLong-document analysisAgent workflowsCode architecture
2026-03-01
Capabilities
ChatVisionReasoningCodepdftoolscache
Pricing (per 1M tokens)
| Pricing (per 1M tokens) | / 1M tokens |
|---|---|
| Input / 1M | $2.63 |
| Output / 1M | $15.75 |
| Cache Read | $0.263 |
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-5.4", messages=[{"role": "user", "content": "Hello!"}], ) print(response.choices[0].message.content)