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YC

Y Combinator Cast

03/11/25

@ Y Combinator

GPT-4.5 is OpenAI's largest and most humanlike model to date, representing a significant step in scaling up unsupervised learning and achieving a deeper understanding of the world and human experience.

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GPT-4.5 = Big Model Energy | YC Decoded

@ Y Combinator

GPT-4.5 = Big Model Energy | YC Decoded

03/11/25

Related Takeaways

Y Combinator Cast

03/11/25

@ Y Combinator

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.

Y Combinator Cast

03/11/25

@ Y Combinator

GPT-4.5 is potentially more than 10 times the size of GPT-4, representing a step forward in both pre-training and post-training processes.

Y Combinator Cast

03/11/25

@ Y Combinator

GPT-4.5 shows that scaling unsupervised learning continues to yield valuable improvements in accuracy, emotional intelligence, and creativity, even if these gains are now more incremental than before.

Y Combinator Cast

03/11/25

@ Y Combinator

OpenAI revealed GPT-4.5 as a model capable of reasoning and systematically thinking through complex problems, clearly surpassing GPT-4 in mathematics, coding, and logical tasks.

Garry Tan

01/24/25

@ Y Combinator

OpenAI's release of GPT-2 in November 2019 marked a significant milestone with 1.5 billion parameters, followed by GPT-3, which was over 100 times larger and more capable than its predecessor.

OpenAI Cast

04/11/25

@ OpenAI

The initial goal for GPT-4.5 was to create a model that is ten times smarter than GPT-4, which we ultimately achieved through a complex process.

Y Combinator Cast

03/11/25

@ Y Combinator

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

Sam Altman

04/11/25

@ OpenAI

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.

Y Combinator Cast

03/11/25

@ Y Combinator

A model that combines the knowledge and intuition of GPT-4.5 with advanced reasoning capabilities would be exceptionally powerful, making GPT-4.5 a crucial bridge towards that future.