--- title: Anthropic releases Sonnet 5.5, which it calls a... description: Anthropic has released Sonnet 5.5, the latest version of its mid-tier model, touting a 30 percent speed improvement and significantly reduced token consumption... canonical: https://daily.dev/posts/anthropic-releases-sonnet-5-5-which-it-calls-a-significantly-cheaper-faster-work-partner-pbrwtj0un twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Anthropic releases Sonnet 5.5, which it calls a significantly cheaper, faster work partner | daily.dev og:description: Anthropic has released Sonnet 5.5, the latest version of its mid-tier model, touting a 30 percent speed improvement and significantly reduced token consumption... og:url: https://daily.dev/posts/anthropic-releases-sonnet-5-5-which-it-calls-a-significantly-cheaper-faster-work-partner-pbrwtj0un og:image: https://api.daily.dev/og/posts/pbRWTJ0Un.png og:image:alt: Anthropic releases Sonnet 5.5, which it calls a significantly cheaper, faster work partner og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Anthropic releases Sonnet 5.5, which it calls a significantly cheaper, faster work partner **[TechCrunch](https://daily.dev/sources/tc)** · 2 min read · 0 upvotes · 0 comments ## Summary Anthropic has released Sonnet 5.5, the latest version of its mid-tier model, touting a 30 percent speed improvement and significantly reduced token consumption compared to its predecessor Sonnet 5, which launched about three months earlier. Anthropic positions Sonnet 5.5 as an everyday assistant for coding and office document tasks, and claims it outperforms the larger Opus 5.5 model on agentic coding benchmarks due to its ability to spawn multiple agents without exceeding cost limits. The model also gains cyber capabilities comparable to Opus 5, triggering the same cyber safeguards applied to Fable and Opus. A new Haiku model is planned for release in coming weeks, without a firm date. The release follows recent model launches from OpenAI (GPT-6, Sol, and Luna updates) and Meta (a new model for its smart glasses AI agent Muse). ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### What is new in Anthropic's Claude Sonnet 5.5 compared to Sonnet 5? Sonnet 5.5 is claimed to be 30 percent faster than Sonnet 5 and burns tokens at a significantly slower rate, making it cheaper to run. It also gains cyber capabilities comparable to Opus 5, making it the first Sonnet model subject to the same cyber safeguards applied to Anthropic's Fable and Opus models. Sonnet 5 launched roughly three months earlier as a cost-efficient agentic model. _Teams choosing between Claude model tiers for agentic coding can track releases like this on daily.dev._ ### Does Claude Sonnet 5.5 outperform Opus 5.5 on coding tasks? Yes, on agentic coding benchmarks Anthropic's own results show Sonnet 5.5 performing better than the larger Opus 5.5 model. This is attributed to Sonnet's agility, particularly its ability to spawn multiple agents without exceeding cost limits, making it more practical for agentic coding workflows despite being a smaller, less powerful model than Opus. _Developers picking a model for multi-agent coding setups can follow benchmark comparisons like this via daily.dev._ ## Similar posts on daily.dev - [Anthropic Sonnet 5: It closes the gap with Opus 4.8, and is cheap until August](https://daily.dev/posts/anthropic-sonnet-5-it-closes-the-gap-with-opus-4-8-and-is-cheap-until-august-o0toggvty) · The New Stack · 0 upvotes · 0 comments - [Anthropic releases Sonnet 4.6](https://daily.dev/posts/anthropic-releases-sonnet-4-6-aufw9ozvi) · TechCrunch · 1 upvotes · 0 comments - [Anthropic launches new version of scaled-down “Haiku” model](https://daily.dev/posts/anthropic-launches-new-version-of-scaled-down-haiku-model-y3gj91kwb) · TechCrunch · 0 upvotes · 0 comments --- Tags: [#llm](https://daily.dev/tags/llm), [#ai-agents](https://daily.dev/tags/ai-agents), [#anthropic](https://daily.dev/tags/anthropic) [View this post on daily.dev](https://daily.dev/posts/anthropic-releases-sonnet-5-5-which-it-calls-a-significantly-cheaper-faster-work-partner-pbrwtj0un) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Anthropic releases Sonnet 5.5, which it calls a significantly cheaper, faster work partner","url":"https://daily.dev/posts/anthropic-releases-sonnet-5-5-which-it-calls-a-significantly-cheaper-faster-work-partner-pbrwtj0un","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/anthropic-releases-sonnet-5-5-which-it-calls-a-significantly-cheaper-faster-work-partner-pbrwtj0un"},"datePublished":"2026-09-28T18:04:14.740Z","dateModified":"2026-09-28T23:06:23.052Z","description":"Anthropic has released Sonnet 5.5, the latest version of its mid-tier model, touting a 30 percent speed improvement and significantly reduced token consumption...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/87a3004e31517379f7b91955332b2a8e?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/87a3004e31517379f7b91955332b2a8e?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"TechCrunch","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"TechCrunch","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/tc","url":"https://daily.dev/sources/tc"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/anthropic-releases-sonnet-5-5-which-it-calls-a-significantly-cheaper-faster-work-partner-pbrwtj0un","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"llm,ai-agents,anthropic","timeRequired":"PT2M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"TechCrunch","item":"https://daily.dev/sources/tc"},{"@type":"ListItem","position":3,"name":"Anthropic releases Sonnet 5.5, which it calls a significantly cheaper, faster work partner"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/anthropic-releases-sonnet-5-5-which-it-calls-a-significantly-cheaper-faster-work-partner-pbrwtj0un#faq","mainEntity":[{"@type":"Question","name":"What is new in Anthropic's Claude Sonnet 5.5 compared to Sonnet 5?","acceptedAnswer":{"@type":"Answer","text":"Sonnet 5.5 is claimed to be 30 percent faster than Sonnet 5 and burns tokens at a significantly slower rate, making it cheaper to run. 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