GPT-4.5

In this article, we are going to delve into GPT-4.5 and all the aspects surrounding it. From its origin to its present day, through its implications in different areas, we want to provide a complete and detailed vision of this topic. We will explore its impact on society, culture, politics and the economy, as well as its relevance in the international arena. Additionally, we will discuss how GPT-4.5 has evolved over time and how it continues to influence our lives today. This article seeks to provide a comprehensive and enriching perspective on GPT-4.5, with the aim of generating a deep reflection on its importance in today's world.

GPT-4.5
DeveloperOpenAI
Year introducedFebruary 27, 2025 (2025-02-27)
Language/s15 languages[1]

GPT-4.5 (codenamed Orion)[2] is a large language model within OpenAI's GPT series. It was released on February 27, 2025. GPT-4.5 can be accessed by Plus and Pro users through the model picker on web, mobile, and desktop, with plans to expand to other tiers. It can also be accessed via the OpenAI API or the OpenAI Developer Playground.[3]

Overview

It was primarily trained using unsupervised learning, which improves its ability to recognize patterns, draw connections, and generate creative insights without reasoning. This method was combined with supervised fine-tuning and reinforcement learning from human feedback. It was trained using Microsoft Azure.[3]

Sam Altman described GPT-4.5 as a "giant, expensive model".[4] As of February 2025, through OpenAI's API it costs $75 per million input tokens and $150 per million output tokens, whereas GPT-4o only costs $2.50 per million input tokens and $10 per million output tokens.[5]

The model was tested on the MMLU test set, which tested 15 different languages, namely Arabic, Bengali, Chinese, English, French, German, Hindi, Indonesian, Italian, Japanese, Korean, Portuguese, Spanish, Swahili, and Yoruba, with the model outperforming GPT-4o on all of them.[1]

A pre-print study in March 2025 found that GPT-4.5 passed the Turing Test.[6]

Reception

Cade Metz, writing for New York Times, stated that the model "signifies the end of an era" and was "unlikely to generate as much excitement as GPT-4".[7] Many other outlets, such as The Verge and Axios, also covered the model's release.[8][9]

References

  1. ^ a b OpenAI (27 February 2025). OpenAI GPT-4.5 System Card (PDF) (Report). Retrieved 2025-03-03.
  2. ^ Zeff, Maxwell (2025-02-27). "OpenAI unveils GPT-4.5 'Orion,' its largest AI model yet". TechCrunch. Retrieved 2025-03-01.
  3. ^ a b "Introducing GPT-4.5". openai.com. Retrieved 2025-02-28.
  4. ^ Novet, Jordan (2025-02-27). "OpenAI launching GPT-4.5, its next general-purpose large language model". CNBC. Retrieved 2025-03-01.
  5. ^ "Pricing". OpenAI. Archived from the original on 27 February 2025. Retrieved 2025-02-28.
  6. ^ "Large Language Models Pass the Turing Test". arXiv. 31 March 2025. Retrieved 3 April 2025.
  7. ^ Metz, Cade (2025-02-27). "OpenAI Unveils GPT-4.5 for More 'Natural Conversation'". The New York Times. ISSN 0362-4331. Retrieved 2025-02-28.
  8. ^ Warren, Tom (2025-02-27). "OpenAI announces GPT-4.5, warns it's not a frontier AI model". The Verge. Retrieved 2025-02-28.
  9. ^ Fried, Ina (2025-02-27). "OpenAI debuts GPT-4.5, its biggest model yet". Axios. Retrieved 2025-02-28.
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