{"id":1982,"date":"2025-09-30T05:47:10","date_gmt":"2025-09-30T09:47:10","guid":{"rendered":"https:\/\/www.glbgpt.com\/hub\/?p=1982"},"modified":"2026-06-24T01:56:29","modified_gmt":"2026-06-24T05:56:29","slug":"claude-sonnet-4-5-the-most-powerful-ai-for-30-hours-of-nonstop-coding","status":"publish","type":"post","link":"https:\/\/wp.glbgpt.com\/hub\/claude-sonnet-4-5-the-most-powerful-ai-for-30-hours-of-nonstop-coding","title":{"rendered":"Claude Sonnet 4.5: The Most Powerful AI for 30+ Hours of Nonstop Coding"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Claude Sonnet 4.5 is Anthropic\u2019s 2025 model built for coding, agents, computer use, reasoning, and long-running software tasks. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It became widely discussed because Anthropic positioned it as a <strong>leading coding model<\/strong>, with strong SWE-bench Verified performance, OSWorld gains, and reports of maintaining focus for more than 30 hours on complex multi-step work.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">By the way, if you\u2019d like to use ChatGPT with <strong>Gemini <\/strong>and other top AI models at an extremely lower price, <strong>Global GPT<\/strong> offers an integrated all-in-one experience.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><a href=\"https:\/\/www.glbgpt.com\/home\/claude-sonnet-4-5\"><img alt=\"\" decoding=\"async\" src=\"https:\/\/wp.glbgpt.com\/wp-content\/uploads\/2025\/09\/image-224.png\" alt=\"\" class=\"wp-image-1994\"\/><\/a><\/figure>\n\n\n\n<div class=\"wp-block-buttons has-custom-font-size has-medium-font-size is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-3e41869c wp-block-buttons-is-layout-flex\" style=\"line-height:1\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-black-color has-text-color has-background has-link-color has-medium-font-size has-custom-font-size wp-element-button\" href=\"https:\/\/www.glbgpt.com\/home\/claude-sonnet-4-5\" style=\"background-color:#fec33a\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Try Claude Sonnet 4.5 Now \uff01<\/strong><\/a><\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Claude Sonnet 4.5 vs Other AI Models: Coding, Pricing, and Best Use Cases<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Model<\/th><th>Best for<\/th><th>Coding \/ agents<\/th><th>Context \/ workflow<\/th><th>Pricing note<\/th><th>Best user<\/th><\/tr><\/thead><tbody><tr><td>Claude Sonnet 4.5<\/td><td>Coding, agents, computer use<\/td><td>Very strong<\/td><td>Long-running multi-step tasks<\/td><td>$3 input \/ $15 output per million tokens via API<\/td><td>Developers and agent builders<\/td><\/tr><tr><td>Claude Sonnet 4<\/td><td>General coding and daily AI work<\/td><td>Strong<\/td><td>Earlier Claude 4 generation<\/td><td>Lower-priority legacy choice<\/td><td>Users comparing old vs new Claude<\/td><\/tr><tr><td>Claude Sonnet 4.6<\/td><td>Newer Sonnet generation<\/td><td>Current Sonnet option<\/td><td>1M context window listed by Anthropic<\/td><td>Check current provider pricing<\/td><td>Users who want the newest Sonnet<\/td><\/tr><tr><td>GPT-5<\/td><td>Coding, reasoning, broad assistant tasks<\/td><td>Strong<\/td><td>Broad ecosystem support<\/td><td>Depends on provider<\/td><td>Users comparing Claude with OpenAI<\/td><\/tr><tr><td>Gemini 3 Pro<\/td><td>Multimodal reasoning and Google ecosystem<\/td><td>Strong<\/td><td>Good for multimodal workflows<\/td><td>Depends on provider<\/td><td>Users needing Google-style multimodal work<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Claude Sonnet 4.5 tops the SWE-bench Verified leaderboard<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">On the <strong>SWE-bench Verified<\/strong> test \u2014 which evaluates real-world programming ability \u2014 Claude Sonnet 4.5 took the <strong>#1 spot in the industry<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Even crazier? It can stay focused and work continuously for <strong>over 30 hours straight<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Yes, AI just added another advantage over humans.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" src=\"https:\/\/wp.glbgpt.com\/wp-content\/uploads\/2025\/09\/image-218.png\" alt=\"Claude Sonnet 4.5 tops the SWE-bench Verified leaderboard\" class=\"wp-image-1986\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Unmatched Coding Power: Building Apps Like Breathing<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">For example, when tasked with building a Slack- or Teams-like chat app, it pumped out <strong>11,000 lines of code in one sitting<\/strong>. By comparison, the older Claude Opus 4 and Codex could only manage about 7 hours of sustained work.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">According to Anthropic, <strong>Claude Sonnet 4.5 is now the world\u2019s most powerful coding model<\/strong> \u2014 with massive improvements in building complex agents, computer operations, reasoning, and math.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" src=\"https:\/\/wp.glbgpt.com\/wp-content\/uploads\/2025\/09\/image-217.png\" alt=\" Claude Sonnet 4.5 is now the world\u2019s most powerful coding model\" class=\"wp-image-1985\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">On <strong>OSWorld<\/strong>, a benchmark designed to test real computer tasks, it scored <strong>61.4%<\/strong>, again taking first place. Just four months ago, Sonnet 4 led with 42.2% \u2014 so the performance jump is staggering.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" src=\"https:\/\/wp.glbgpt.com\/wp-content\/uploads\/2025\/09\/image-219.png\" alt=\"Claude Sonnet 4.5 achieving 61.4% on the OSWorld benchmark for real computer tasks\" class=\"wp-image-1987\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>New Features and Tool Upgrades<\/strong> of Claude Sonnet 4.5<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Anthropic also rolled out several major upgrades alongside the new model:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Checkpoint support<\/strong> is finally available, allowing progress to be saved and rolled back to previous states at any time.<\/li>\n\n\n\n<li><strong>Usage information<\/strong> can now be queried directly within Claude Code using <code>\/usage<\/code>.<\/li>\n\n\n\n<li><strong>Native VS Code plugin<\/strong> is available, similar to OpenAI\u2019s Codex plugin.<\/li>\n\n\n\n<li><strong>Claude Code SDK<\/strong> has been officially renamed to <strong>Claude Agent SDK<\/strong>, enhancing Agent-building capabilities.<\/li>\n\n\n\n<li><strong>Terminal interface<\/strong> has been significantly redesigned, allowing users to see previous session history and new feature lists at a glance upon startup.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/wp.glbgpt.com\/wp-content\/uploads\/2025\/09\/image-223-1024x555.png\" alt=\"New Features and Tool Upgrades of Claude Sonnet 4.5\" class=\"wp-image-1991\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Anthropic has even opened up the underlying infrastructure they use to build Claude Code, called the <strong>Claude Agent SDK<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Managing memory for agents during long-running tasks, designing permission systems that balance autonomy and user control, and coordinating multiple sub-agents to achieve goals are all challenging aspects of building and designing AI agents.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">With the <strong>Claude Agent SDK<\/strong>, you can now leverage this infrastructure to build your own products.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Early User Reactions: A Love-Hate Relationship<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Starting today, developers can call <code>claude-sonnet-4-5<\/code> via the Claude API. Pricing is unchanged from Sonnet 4: <strong>$3\/$15 per million tokens<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Early testers are already impressed:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">One developer shared their experience immediately after trying it:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><em><strong>\u201cClaude 4.5 Sonnet just refactored my entire codebase in a single run\u201425 tool invocations, over 3,000 new lines of code, and 12 brand-new files. It modularized everything, broke down the monolithic structure, and cleaned up spaghetti code. The result didn\u2019t actually run, but wow, it was really elegant.\u201d This review feels like a mix of love and frustration.<\/strong><\/em><\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Cursor stated that they observed cutting-edge programming performance with Claude Sonnet 4.5, especially with improvements in handling long-duration tasks. This further explains why many Cursor users choose Claude to tackle the most complex problems.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Well-known reviewer tech blogger Dan Shipper noted that Claude 4.5 feels <strong>faster, more controllable, and more stable<\/strong>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img alt=\"\" decoding=\"async\" src=\"https:\/\/wp.glbgpt.com\/wp-content\/uploads\/2025\/09\/image-220-1024x596.png\" alt=\"Claude 4.5 demonstrating faster performance, greater controllability, and improved stability, noted by tech blogger Dan Shipper\n\" class=\"wp-image-1988\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Enhanced Safety: Highest Alignment Yet<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Performance is one thing, but safety must keep pace.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Claude Sonnet 4.5 is, according to Anthropic, their most aligned cutting-edge model to date.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Thanks to Claude\u2019s enhanced capabilities combined with rigorous safety training, Anthropic has made significant improvements in model behavior, reducing tendencies such as sycophancy, deception, power-seeking, and encouraging delusions. Additionally, Anthropic has achieved major breakthroughs in defending against prompt injection attacks and minimizing content misclassification.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img alt=\"\" decoding=\"async\" src=\"https:\/\/wp.glbgpt.com\/wp-content\/uploads\/2025\/09\/image-221-1024x568.png\" alt=\"Claude Sonnet 4.5, Anthropic\u2019s most aligned and cutting-edge AI model to date\n\" class=\"wp-image-1989\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Claude Sonnet 4.5 Experimental Feature: Imagine with Claude<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">At the same time, Anthropic launched a <strong>temporary research preview<\/strong> called <em>Imagine with Claude<\/em>. In this mode, Claude generates software in real time \u2014 none of the functions or code are pre-written. Everything is created and adjusted interactively on the spot.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This preview is only available for <strong>Claude Max subscribers<\/strong> over the next 5 days.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Access it here\uff1a<a href=\"https:\/\/claude.ai\/imagine\/\">https:\/\/claude.ai\/imagine\/<\/a><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/wp.glbgpt.com\/wp-content\/uploads\/2025\/09\/image-222-1024x563.png\" alt=\"Claude Sonnet 4.5 Experimental Feature: \u201cImagine with Claude\u201d\" class=\"wp-image-1990\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Market Competition and Strategic Significance of Claude Sonnet 4.5<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Anthropic is currently valued at <strong>$183 billion<\/strong>, with an annualized revenue run rate of $5 billion as of August \u2014 much of it fueled by coding tools. But the competition is fierce: <strong>OpenAI and Google Gemini<\/strong> are also racing to dominate the developer market.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Notably, OpenAI\u2019s annual developer conference is just a week away. Anthropic dropping Claude 4.5 now is a clear move to apply pressure.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Anthropic\u2019s co-founder and chief scientist Jared Kaplan has already teased that an even more advanced <strong>Claude Opus model<\/strong> will launch later this year.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Is Claude Sonnet 4.5 still worth using?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Claude Sonnet 4.5 is <strong>still worth trying<\/strong> if your main use case is coding, software planning, technical writing, or AI agent workflows. Even when newer models are available, Sonnet 4.5 remains a useful reference point because many users still search for it, compare it, and use it as a benchmark for Claude\u2019s coding performance.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If you are choosing a model today, the practical answer is simple: use Claude Sonnet 4.5 when you want a strong coding-focused Claude model, and compare it with newer Claude, GPT, and Gemini models when your task depends on the latest reasoning, multimodal, or context-window capabilities.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Past Issues and Restoring User Confidence<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">It hasn\u2019t all been smooth sailing. Over the past two months, users accused the Claude series of being \u201cdumbed down.\u201d Many reported sharp declines in reasoning, coding, formatting, and tool use quality \u2014 even paid Max subscribers.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Anthropic admitted to two independent bugs and rolled back the Opus 4.1 update, denying cost-cutting motives. But without compensation or refunds, backlash spread on GitHub and X, with some users switching to competitors like Codex.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The release of <strong>Claude Sonnet 4.5<\/strong> is Anthropic\u2019s chance to win them back. Whether it succeeds will depend on how the model performs in real-world use over the coming weeks.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">FAQs<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">What is Claude Sonnet 4.5?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Claude Sonnet 4.5 is an Anthropic AI model released in September 2025 for coding, agents, computer use, reasoning, and long-running software tasks.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">How can I try Claude Sonnet 4.5?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">You can try Claude Sonnet 4.5 through Claude-supported apps, the Anthropic API, or platforms that provide access to multiple AI models, including GlobalGPT\u2019s Claude Sonnet 4.5 page.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Is Claude Sonnet 4.5 good for coding?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Yes. Anthropic positioned Sonnet 4.5 as a leading coding model, especially for multi-step code generation, refactoring, debugging, and agentic software workflows.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">What is the Claude Sonnet 4.5 API name?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Anthropic\u2019s announcement says developers can use <code>claude-sonnet-4-5<\/code> through the Claude API.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Is Claude Sonnet 4.5 free?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Direct API usage is paid. If targeting <code>claude sonnet 4.5 test free<\/code>, add a clear section explaining whether GlobalGPT offers free trial credits or limited trial access, without promising free access if it is not available.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Is Claude Sonnet 4.5 still the latest Sonnet model?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">No. Anthropic\u2019s current Sonnet page shows Claude Sonnet 4.6 as the newer Sonnet generation. Keep this page focused on Sonnet 4.5 because users still search for it, but link to your Claude Sonnet 4.6 page.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Claude Sonnet 4.5 is Anthropic\u2019s 2025 model built for coding, agents, computer use, reasoning, and long-running software tasks. It became widely discussed because Anthropic positioned it as a leading coding model, with strong SWE-bench Verified performance, OSWorld gains, and reports of maintaining focus for more than 30 hours on complex multi-step work. By the way, [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":3938,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"%%post_title%%","_seopress_titles_desc":"Discover the power of Claude Sonnet 4.5, Anthropic\u2019s latest AI coding model. Capable of working continuously for 30+ hours, refactoring codebases, and creating new files, it offers unmatched coding performance, enhanced safety, and innovative features like \u201cImagine with Claude.\u201d","_seopress_robots_index":"","footnotes":""},"categories":[7],"tags":[],"class_list":["post-1982","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ai-chat"],"_links":{"self":[{"href":"https:\/\/wp.glbgpt.com\/wp-json\/wp\/v2\/posts\/1982","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wp.glbgpt.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wp.glbgpt.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wp.glbgpt.com\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/wp.glbgpt.com\/wp-json\/wp\/v2\/comments?post=1982"}],"version-history":[{"count":4,"href":"https:\/\/wp.glbgpt.com\/wp-json\/wp\/v2\/posts\/1982\/revisions"}],"predecessor-version":[{"id":15580,"href":"https:\/\/wp.glbgpt.com\/wp-json\/wp\/v2\/posts\/1982\/revisions\/15580"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/wp.glbgpt.com\/wp-json\/wp\/v2\/media\/3938"}],"wp:attachment":[{"href":"https:\/\/wp.glbgpt.com\/wp-json\/wp\/v2\/media?parent=1982"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wp.glbgpt.com\/wp-json\/wp\/v2\/categories?post=1982"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wp.glbgpt.com\/wp-json\/wp\/v2\/tags?post=1982"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}