24/09/2025
OpenAI GPT-4 vs GPT-4.5 — Key Differences, Features & Use Cases: Everything You Need to Know (Complete Guide 2025)
Introduction
Since the release of GPT-4 in 2023, OpenAI has continued to refine its AI technology. The latest step forward, GPT-4.5, launched in February 2025 as a research preview, promises fresher knowledge, better accuracy, and improved multimodal capabilities.
In this article, we’ll break down GPT-4 vs GPT-4.5 in detail — covering technical differences, pricing, use cases, limitations, and where to access both models.
Quick summary (TL;DR)
GPT-4 — OpenAI’s major 2023 multimodal milestone: stronger language understanding, image inputs, longer context options (8k/32k variants) and enterprise API access. (OpenAI)
GPT-4.5 — Research preview (Feb 27, 2025): iterative upgrade focused on accuracy, pattern recognition, improved context handling, file/image uploads and fresher knowledge through search; rolled out first to Pro/dev users. (OpenAI)
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https://toplinkstechs.com/open-ai-gpt-4-vs-gpt-4-5