Everything you need to know about OpenAI GPT-5.4 ✌️

OpenAI’s new GPT-5.4 is here, and on paper at least, it looks like one of their strongest all-rounder models so far. TL;DR In this article, we take a quick look at OpenAI GPT-5.4, go through its official benchmarks, and then compare it in one small coding task against Anthropic’s general-purpose model, Claude Sonnet 4.6, to see how it actually performs. We briefly go over what GPT-5.4 is, what OpenAI is claiming with this model, and why it looks like one of their strongest all-rounder releases so far. We look at the official benchmarks around coding, reasoning, tool use, and computer-use capabilities to get an idea of how strong the model looks on paper. Instead of relying only on benchmarks, we also compare GPT-5.4 against Claude Sonnet 4.6 in one small, quick coding task (not enough to judge fully, but still...). Brief on OpenAI GPT-5.4 So, before we jump into the coding test, let me give you a quick brief on GPT-5.4, because this is one of OpenAI’s biggest model releases in a while.