User satisfaction shows that GPT-4.5 is smarter in subtle ways, demonstrating more common sense and understanding of nuance and context.

Evaluations of GPT-4.5 rely on feedback from human testers to assess its performance in subjective areas like writing quality and emotional intelligence.

According to OpenAI researchers, GPT-4.5 stands out for its emotional intelligence, allowing for deeper conversations and a better understanding of human needs and requests.

GPT-4.5 is more trustworthy for general inquiries compared to GPT-4, excelling in creative tasks like drafting emails, generating imaginative stories, and telling jokes.

GPT-4.5 excels at natural conversation, creative tasks, and complex planning, while also hallucinating far less than previous models.

The main advantages of GPT-4 include faster response times, sharper reasoning that reduces misunderstandings, and more natural language that feels relatable rather than robotic.

In testing GPT-4.5, we found it has nuanced abilities that were unexpected, indicating it is more intelligent in ways that are hard to characterize ahead of time.

GPT-4.5 achieves around 61.9% accuracy on benchmarks like simple QA, which evaluates its effectiveness in answering questions, and answers fact-based questions with a 38.4% accuracy rate, significantly reducing hallucination rates to roughly 37%.

When we launched GPT-4.5, we were proud of the model, but users liked it much more than we anticipated, expressing that it was significantly better than GPT-4 in various ways.