GPT-5.2
GPT-5.2 is OpenAI's most capable model series, released in December 2025. It features a massive 400K token context window, enhanced reasoning capabilities, and improved performance on coding, math, and scientific tasks.
Basic Usage
python
from openai import OpenAI
client = OpenAI(
base_url="https://api.ohmygpt.com/v1",
api_key="your-api-key",
)
response = client.chat.completions.create(
model="gpt-5.2",
messages=[
{"role": "user", "content": "Explain quantum computing in simple terms."}
],
)
print(response.choices[0].message.content)Using GPT-5.2 Thinking
For complex reasoning tasks like coding and planning, use the thinking variant:
python
response = client.chat.completions.create(
model="gpt-5.2-thinking",
messages=[
{
"role": "user",
"content": "Write a Python function to find the longest palindromic substring."
}
],
)Vision Example
GPT-5.2 has enhanced vision capabilities for analyzing images, charts, and documents:
python
response = client.chat.completions.create(
model="gpt-5.2",
messages=[
{
"role": "user",
"content": [
{"type": "text", "text": "Analyze this chart and summarize the key trends."},
{
"type": "image_url",
"image_url": {"url": "https://example.com/chart.png"}
}
]
}
],
)Long Context Example
Take advantage of the 400K context window for processing large documents:
python
# Read a large document or codebase
with open("large_document.txt", "r") as f:
document = f.read()
response = client.chat.completions.create(
model="gpt-5.2",
messages=[
{
"role": "system",
"content": "You are a helpful assistant that analyzes documents."
},
{
"role": "user",
"content": f"Summarize the key points from this document:\n\n{document}"
}
],
)Best Practices
- Choose the Right Variant: Use
gpt-5.2for fast responses,gpt-5.2-thinkingfor complex reasoning, andgpt-5.2-profor the highest accuracy - Leverage Long Context: Process entire codebases or document collections without chunking
- Use System Messages: Set clear context and behavior expectations
- Monitor Token Usage: The 400K context is powerful but costs more—use it strategically