{"id":333,"date":"2026-07-01T08:07:50","date_gmt":"2026-07-01T00:07:50","guid":{"rendered":"https:\/\/aidashxp.com\/claude-sonnet-5-review\/"},"modified":"2026-07-01T08:07:50","modified_gmt":"2026-07-01T00:07:50","slug":"claude-sonnet-5-review","status":"publish","type":"post","link":"https:\/\/aidashxp.com\/en\/claude-sonnet-5-review\/","title":{"rendered":"Claude Sonnet 5 in-depth review: Anthropic packs Opus-level intelligent capabilities into the mid-range price range"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Anthropic was officially released on June 30, 2026<strong><a href=\"https:\/\/claude.ai\" target=\"_blank\" rel=\"nofollow noopener\">Claude<\/a> Sonnet 5<\/strong>, the most powerful agent model in its Sonnet series to date. Compared with the previous generation Sonnet 4.6, Sonnet 5 has achieved leaps and bounds in the core capabilities of agents such as reasoning, tool use, programming and knowledge work, while the pricing maintains the consistent cost-effectiveness advantage of the Sonnet series. More importantly, it brings Opus-level agent capabilities to the mid-range price range for the first time - Anthropic says its performance is \"close to Opus 4.8, but at a much lower price.\"<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">core competencies<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The biggest selling point of Sonnet 5 is<strong>A huge jump in the capabilities of intelligent agents<\/strong>. It's able to make plans, use tools like browsers and terminals, and run autonomously for long periods of time - tasks that just a few months ago would have required larger, more expensive models, the Sonnet 5 can now do.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Agentic Coding<\/strong>: It scored 63.2% in the SWE-Bench agent programming benchmark, far exceeding Sonnet 4.6\u2019s 58.1% and approaching Opus 4.8\u2019s 69.2%. Ability to independently handle multi-step software engineering tasks, including code writing, tool invocation, and debugging.<\/li>\n<li><strong>knowledge work<\/strong>: even in some knowledge work benchmarks<strong>Slightly more than Opus 4.8<\/strong>, outstanding performance in in-depth research, subtle judgment, etc.<\/li>\n<li><strong>Complete tasks autonomously<\/strong>: Early testers reported that Sonnet 5 can complete complex tasks that would \u201cstop midway\u201d in previous versions, and<strong>Proactively check your own output<\/strong>, no explicit instructions are required.<\/li>\n<li><strong>contextual understanding<\/strong>: Supports 1M token context window, suitable for processing large-scale code bases and complex documents.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Pricing and availability<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Sonnet 5\u2019s pricing strategy is extremely competitive. From now until August 31, 2026, enjoy<strong>Initial discount price: USD 2 per million input tokens, USD 10 per million output tokens<\/strong>. Starting from September 1st, standard pricing will resume: input $3\/output $15. Compared to Opus 4.8\u2019s $5\/$25,<a href=\"https:\/\/claude.ai\" target=\"_blank\" rel=\"nofollow noopener\">Claude<\/a> Sonnet 5 offers approximately 60% lower cost while providing similar performance.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sonnet 5 is now available as a Free and Pro plan<strong>Default model<\/strong>Open to all users and supports Max, Team and Enterprise plans. Developers can use<a href=\"https:\/\/claude.ai\" target=\"_blank\" rel=\"nofollow noopener\">Claude<\/a> API usage model identifier<code>claude-sonnet-5<\/code>, and can also be called on AWS, Microsoft Foundry and other platforms.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">safety assessment<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Anthropic's security assessment shows Sonnet 5's overall bad behavior rate<strong>Lower than Sonnet 4.6<\/strong>. In terms of agent security, the model is better at rejecting malicious requests and resisting hint injection attacks. Rates of hallucinations and pandering behavior are also lower than in previous generations.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">However, Sonnet 5 is still far inferior to Opus 4.8 and Mythos 5 in terms of network security capabilities. Complete success rate of Sonnet 5 in Firefox exploit tests<strong>is 0%<\/strong>. Anthropic is enabled by default for Sonnet 5<strong>Network security real-time protection<\/strong>(Cyber \u200b\u200bSafeguards), detect and block dangerous network operations.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">User experience\/limitations<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Many early partner companies have given positive feedback.<a href=\"https:\/\/zapier.com\" target=\"_blank\" rel=\"nofollow noopener\">Zapier<\/a>Engineers said \"it completed end-to-end tasks that would have failed halfway before\";<a href=\"https:\/\/lovable.dev\" target=\"_blank\" rel=\"nofollow noopener\">Lovable<\/a>The co-founders praised its \"clean and consistent rejection of unsafe requests\"; Sourcegraph commented on its \"continuous coding, tool usage and debugging capabilities in complex technical environments.\"<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>limitations<\/strong>: The tokenizer of Sonnet 5 has been updated. The same input may generate more tokens (about 1.0-1.35 times), but the initial discount price has taken this into account. Furthermore, Opus 4.8 is still the better choice for tasks that require the highest precision, such as complex network security work. Anthropic recommends users switch between Sonnet 5 (price\/performance) and Opus 4.8 (high accuracy) as needed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Overall Score<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table>\n<thead><tr><th>\u7ef4\u5ea6<\/th><th>Score<\/th><th>evaluate<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>functional completeness<\/td><td>9.0 \/ 10<\/td><td>Agent capabilities, programming, and knowledge work are all close to the Opus 4.8 level, 1M context, but some high-precision tasks are still weaker than the flagship model<\/td><\/tr>\n<tr><td>\u6613\u7528\u6027<\/td><td>9.2 \/ 10<\/td><td>All plans are available by default, and the API is simple and easy to access.<a href=\"https:\/\/claude.ai\" target=\"_blank\" rel=\"nofollow noopener\">Claude<\/a> Code integration is smooth<\/td><\/tr>\n<tr><td>Cost-effectiveness<\/td><td>9.5 \/ 10<\/td><td>The price starting from $2\/$10 reaches 90% of the performance of Opus 4.8, and it is extremely cost-effective during the first launch discount period.<\/td><\/tr>\n<tr><td>\u4e2d\u6587\u652f\u6301<\/td><td>8.5 \/ 10<\/td><td>The Chinese ability is stable, but the understanding and expression of Chinese in professional fields are slightly inferior to OpenAI and domestic models.<\/td><\/tr>\n<tr><td>\u8f93\u51fa\u8d28\u91cf<\/td><td>9.0 \/ 10<\/td><td>Code quality and knowledge work output are reliable, independent inspection output reduces errors, and the hallucination rate is lower than the previous generation<\/td><\/tr>\n<\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Overall rating: 9.0\/10<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/claude.ai\" target=\"_blank\" rel=\"nofollow noopener\">Claude<\/a> The release of Sonnet 5 marks an important turning point in the AI \u200b\u200bindustry:<strong>Agent capabilities are no longer the exclusive privilege of flagship models<\/strong>. Anthropic packs close to Opus-level agent capabilities into a mid-range price, which means that the threshold and cost for developers to build AI Agents will drop significantly. For enterprises, the combination of Sonnet 5 and Opus 4.8 - which can adjust between performance and cost on demand - offers an attractive proposition. Anthropic\u2019s move also brought direct price pressure to OpenAI\u2019s GPT-5.6 and Google\u2019s Gemini 3.5 series.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Want to know more AI tool reviews? access <a href=\"https:\/\/aidashxp.com\/en\/\">AI Dash<\/a> Discover the best AI tools.<\/p>","protected":false},"excerpt":{"rendered":"<p>Anthropic\u57282026\u5e746\u670830\u65e5 [&hellip;]<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[6],"tags":[],"class_list":["post-333","post","type-post","status-publish","format-standard","hentry","category-ai-coding"],"_links":{"self":[{"href":"https:\/\/aidashxp.com\/en\/wp-json\/wp\/v2\/posts\/333","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aidashxp.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/aidashxp.com\/en\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/aidashxp.com\/en\/wp-json\/wp\/v2\/comments?post=333"}],"version-history":[{"count":0,"href":"https:\/\/aidashxp.com\/en\/wp-json\/wp\/v2\/posts\/333\/revisions"}],"wp:attachment":[{"href":"https:\/\/aidashxp.com\/en\/wp-json\/wp\/v2\/media?parent=333"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aidashxp.com\/en\/wp-json\/wp\/v2\/categories?post=333"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aidashxp.com\/en\/wp-json\/wp\/v2\/tags?post=333"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}