GPT-4.5 offers significant improvements in computational efficiency compared to its predecessors, including GPT-4o. While specific details about direct comparisons between GPT-4.5 and GPT-4o in terms of computational efficiency are not explicitly mentioned, GPT-4.5 is noted for enhancing the computational efficiency of GPT-4 by more than tenfold[1][2]. This suggests that GPT-4.5 continues the trend of optimizing computational resources, which was also a focus in the development of GPT-4o, which is designed to be quicker and more computationally efficient than GPT-4[3][4].
GPT-4.5's improvements are primarily attributed to its larger scale and more efficient training methods, which allow it to process information more effectively[5]. However, the exact nature of these improvements over GPT-4o is not detailed in the available information. GPT-4o itself is optimized for efficiency and cost-effectiveness, being twice as fast as GPT-4 in some scenarios[4]. Therefore, while GPT-4.5 represents a significant advancement in efficiency over GPT-4, its specific advantages over GPT-4o in this regard are not clearly outlined.
Overall, GPT-4.5's enhancements in computational efficiency are part of OpenAI's broader strategy to scale up compute resources and improve training methods, which contributes to its position as the largest and most knowledgeable model to date[1][5].
Citations:
[1] https://www.theverge.com/news/620021/openai-gpt-4-5-orion-ai-model-release
[2] https://www.reddit.com/r/singularity/comments/1izn175/openai_gpt45_system_card/
[3] https://www.techtarget.com/searchenterpriseai/feature/GPT-4o-vs-GPT-4-How-do-they-compare
[4] https://blog.promptlayer.com/understanding-gpt-4o-vs-gpt-4-a-comparative-guide/
[5] https://www.technologyreview.com/2025/02/27/1112619/openai-just-released-gpt-4-5-and-says-it-is-its-biggest-and-best-chat-model-yet/
[6] https://www.techtarget.com/searchenterpriseai/tip/GPT-35-vs-GPT-4-Biggest-differences-to-consider
[7] https://venturebeat.com/ai/industry-observers-say-gpt-4-5-is-an-odd-model-question-its-price/
[8] https://community.openai.com/t/gpt-4-vs-gpt-4o-which-is-the-better/746991
[9] https://www.cnbc.com/2025/02/27/openai-launching-gpt-4point5-general-purpose-large-language-model.html