{"id":1862,"date":"2026-06-30T21:23:00","date_gmt":"2026-06-30T21:23:00","guid":{"rendered":"https:\/\/futurenews24.com\/index.php\/2026\/06\/30\/atom-everything-19\/"},"modified":"2026-07-04T09:59:06","modified_gmt":"2026-07-04T09:59:06","slug":"atom-everything-19","status":"publish","type":"post","link":"https:\/\/futurenews24.com\/index.php\/2026\/06\/30\/atom-everything-19\/","title":{"rendered":"What&#8217;s new in Claude Sonnet 5"},"content":{"rendered":"<p><br \/>\n<\/p>\n<div>\n<p class=\"mobile-date-eyebrow\">thirtieth June 2026 &#8211; Hyperlink Weblog<\/p>\n<div data-permalink-context=\"\/2026\/Jun\/30\/claude-sonnet-5\/\">\n<p>What&#8217;s new in Claude Sonnet 5 (by way of) Claude Sonnet 5 got here out this morning. I at all times head straight for the &#8220;what&#8217;s new&#8221; developer docs as a result of they have a tendency to have extra actionable data than the official announcement put up.<\/p>\n<p>Anthropic say of Sonnet 5 that &#8220;its efficiency is near that of Opus 4.8, however at decrease costs&#8221;. The system card helps clarify how they have been in a position to launch the mannequin with out being blocked by the US authorities:<\/p>\n<blockquote>\n<p>Sonnet 5 is considerably much less succesful at cyber duties than Mythos 5: its safeguards are thus just like these we apply to Opus 4.7 and Opus 4.8 (fashions which can be extra succesful than Sonnet 5 however a lot much less succesful than Mythos 5).<\/p>\n<\/blockquote>\n<p>Of word from the &#8220;what&#8217;s new&#8221; API adjustments:<\/p>\n<p>Sampling parameters temperature, top_p, top_k are not supported.<br \/>\nIt has a 1 million token context window and 128,000 most output tokens.<br \/>\nIt options &#8220;the identical set of instruments and platform options as Claude Sonnet 4.6&#8221;<br \/>\nAdaptive considering is on by default, until you specify &#8220;considering&#8221;: {kind: &#8220;disabled&#8221;}.<br \/>\nThe pricing is identical as Sonnet 4.6: $3\/million enter, $15\/million enter, with an introductory low cost to $2\/$10 till thirty first August. However&#8230;<br \/>\nThe mannequin has a brand new tokenizer, the place &#8220;The identical enter textual content produces roughly 30% extra tokens than on Claude Sonnet 4.6.&#8221; &#8211; successfully a 30% value improve.<\/p>\n<p>I used my Claude Token Counter instrument to check out the brand new tokenizer. Listed below are my outcomes for a number of bigger paperwork:<\/p>\n<p>      Doc<br \/>\n      Sonnet 4.6<br \/>\n      Opus 4.7<br \/>\n      Sonnet 5<\/p>\n<p>      Common Declaration of Human Rights (English)<br \/>\n      2,356<br \/>\n      3,3471.42x<br \/>\n      3,3411.42x<\/p>\n<p>      Common Declaration of Human Rights (Spanish)<br \/>\n      3,572<br \/>\n      4,7531.33x<br \/>\n      4,7471.33x<\/p>\n<p>      Common Declaration of Human Rights (Chinese language, Mandarin Simplified)<br \/>\n      3,334<br \/>\n      3,3661.01x<br \/>\n      3,3601.01x<\/p>\n<p>      sqlite_utils\/db.py (4,279 strains of Python)<br \/>\n      44,014<br \/>\n      56,1181.28x<br \/>\n      56,1131.27x<\/p>\n<p>So the brand new token is roughly 1.4x occasions costlier for English, 1.33x for Spanish, 1.28x for Python code and successfully the identical value for Simplified Mandarin.<\/p>\n<p>This is the pelican. It is nothing to jot down dwelling about. Sonnet 5 thinks it appears to be like like a goose.<\/p>\n<p><img decoding=\"async\" alt=\"Illustration of a white goose riding a bicycle, with one wing extended forward to grip the handlebar, set against a plain white background with a brown ground line.\" src=\"https:\/\/static.simonwillison.net\/static\/2026\/sonnet-5-pelican.png\"\/><\/p>\n<\/div>\n<\/div>\n<p><br \/>\n<br \/><a href=\"https:\/\/simonwillison.net\/2026\/Jun\/30\/claude-sonnet-5\/#atom-everything\">Source link <\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>thirtieth June 2026 &#8211; Hyperlink Weblog What&#8217;s new in Claude Sonnet 5 (by way of) Claude Sonnet 5 got here out this morning. I at all times head straight for the &#8220;what&#8217;s new&#8221; developer docs as a result of they have a tendency to have extra actionable data than the official announcement put up. Anthropic [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1864,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/static.simonwillison.net\/static\/2026\/sonnet-5-pelican.png","fifu_image_alt":"","jnews-multi-image_gallery":[],"jnews_single_post":[],"jnews_primary_category":[],"jnews_override_bookmark_settings":[],"jnews_social_meta":[],"jnews_override_counter":[],"footnotes":""},"categories":[2],"tags":[182,2269,1246],"class_list":["post-1862","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ai-research-breakthroughs","tag-claude","tag-sonnet","tag-whats"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What&#039;s new in Claude Sonnet 5 - Future News 24<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/futurenews24.com\/index.php\/2026\/06\/30\/atom-everything-19\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What&#039;s new in Claude Sonnet 5 - Future News 24\" \/>\n<meta property=\"og:description\" content=\"thirtieth June 2026 &#8211; Hyperlink Weblog What&#8217;s new in Claude Sonnet 5 (by way of) Claude Sonnet 5 got here out this morning. 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