{"id":78,"date":"2026-04-20T22:27:00","date_gmt":"2026-04-20T22:27:00","guid":{"rendered":"https:\/\/cgh.mx\/?p=78"},"modified":"2026-04-20T19:36:11","modified_gmt":"2026-04-20T19:36:11","slug":"gpt-5-4-chatgpt-what-changed","status":"publish","type":"post","link":"https:\/\/cgh.mx\/?p=78","title":{"rendered":"GPT-5.4 in ChatGPT: what changed and why it matters"},"content":{"rendered":"<h1>GPT-5.4 in ChatGPT: what changed and why it matters<\/h1>\n<p><strong>GPT-5.4 is now in ChatGPT<\/strong>, and the real story is not just a version bump. OpenAI is positioning it as a stronger model for practical work, including reasoning, coding, long-context tasks, tool use, and agent-style workflows.<\/p>\n<h2>What OpenAI says changed<\/h2>\n<p>OpenAI introduced <strong>GPT-5.4<\/strong> across the API, Codex, and <strong>ChatGPT as GPT-5.4 Thinking<\/strong>. It also introduced <strong>GPT-5.4 Pro<\/strong> for higher-end use cases.<\/p>\n<p>According to OpenAI, GPT-5.4 combines recent gains in:<\/p>\n<ul>\n<li>reasoning<\/li>\n<li>coding<\/li>\n<li>agentic workflows<\/li>\n<li>computer use<\/li>\n<li>long context<\/li>\n<li>tools and connectors<\/li>\n<\/ul>\n<p>The big idea is simple: make ChatGPT more useful for real work, not just better at conversation.<\/p>\n<h2>A more practical ChatGPT<\/h2>\n<p>One notable change is that <strong>GPT-5.4 Thinking can show an initial plan while it works<\/strong>.<\/p>\n<p>That matters because users can correct the direction earlier instead of waiting until the end of a long answer. OpenAI also says GPT-5.4 improves <strong>deep web research<\/strong>, especially for harder, more specific queries.<\/p>\n<h2>Better for coding, tools, and longer tasks<\/h2>\n<p>OpenAI says GPT-5.4 is its first general-purpose model with <strong>native computer use capabilities at a state-of-the-art level<\/strong>.<\/p>\n<p>In practical terms, that means it is better suited for workflows involving software, websites, tools, and multi-step tasks. OpenAI also says GPT-5.4 builds on the coding strengths of <strong>GPT-5.3-Codex<\/strong> while improving work across tools, documents, and software environments.<\/p>\n<h2>More context, fewer factual mistakes<\/h2>\n<p>GPT-5.4 supports up to <strong>1 million tokens of context<\/strong>, which helps with long documents, multi-file analysis, and larger projects.<\/p>\n<p>OpenAI also says GPT-5.4 is its most factual model so far, with fewer false claims and fewer mistakes than GPT-5.2 in internal evaluations.<\/p>\n<p>That does not mean hallucinations are gone, but it does suggest a push toward more reliable output in serious use cases.<\/p>\n<h2>Why it matters<\/h2>\n<p>For everyday users, GPT-5.4 could feel better at:<\/p>\n<ul>\n<li>researching complex topics<\/li>\n<li>summarizing long documents<\/li>\n<li>helping with spreadsheets or presentations<\/li>\n<li>coding and debugging<\/li>\n<li>handling tasks that involve multiple tools<\/li>\n<\/ul>\n<p>The broader shift is more important: OpenAI is moving ChatGPT toward a more capable work assistant, not just a chatbot.<\/p>\n<h2>Bottom line<\/h2>\n<p>GPT-5.4 matters because it improves several important pieces at once: reasoning, coding, tool use, long context, and factual reliability.<\/p>\n<p>It is not just another small update. It is a step toward a more useful ChatGPT for real work.<\/p>\n<h2>Sources<\/h2>\n<ul>\n<li><a href=\"https:\/\/openai.com\/index\/introducing-gpt-5-4\/\">OpenAI: Introducing GPT-5.4<\/a><\/li>\n<li><a href=\"https:\/\/help.openai.com\/en\/articles\/6825453-chatgpt-release-notes\">ChatGPT release notes<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>GPT-5.4 in ChatGPT improves reasoning, coding, tool use, long-context work, and agent-style tasks. Here is what changed and why it matters.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[34],"tags":[24,78,79,47,58],"class_list":["post-78","post","type-post","status-publish","format-standard","hentry","category-ai","tag-ai","tag-chatgpt","tag-codex","tag-gpt-5-4","tag-openai"],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/cgh.mx\/index.php?rest_route=\/wp\/v2\/posts\/78","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cgh.mx\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cgh.mx\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cgh.mx\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cgh.mx\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=78"}],"version-history":[{"count":3,"href":"https:\/\/cgh.mx\/index.php?rest_route=\/wp\/v2\/posts\/78\/revisions"}],"predecessor-version":[{"id":82,"href":"https:\/\/cgh.mx\/index.php?rest_route=\/wp\/v2\/posts\/78\/revisions\/82"}],"wp:attachment":[{"href":"https:\/\/cgh.mx\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=78"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cgh.mx\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=78"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cgh.mx\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=78"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}