GPT-4.5 (Preview)

About GPT-4.5 (Preview)

GPT-4.5 Preview is OpenAI's experimental model bridging GPT-4 and GPT-5, showcasing improvements in reasoning, creativity, and instruction following. As a preview release, it demonstrates OpenAI's ongoing development toward more capable AI systems. The model features enhanced performance on complex tasks while maintaining the reliability expected from the GPT-4 family. GPT-4.5 Preview excels at nuanced reasoning, creative writing, and sophisticated code generation. It serves as an early look at capabilities coming to future production models. For developers interested in cutting-edge OpenAI capability and willing to work with preview-stage technology, GPT-4.5 Preview offers a glimpse into the future of the GPT series. It's valuable for experimentation and testing new features before wider availability.

Model Specifications

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🚀 Quick Start

Get started with GPT-4.5 (Preview) API

from openai import OpenAI
client = OpenAI()

response = client.chat.completions.create(
    model="openai/gpt-4.5-preview-2025-02-27",
    messages=[
        {"role": "user", "content": "Hello!"}
    ]
)
print(response.choices[0].message.content)

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