Anthropic launches cheaper AI model, its second release since CEO's call for a slowdown

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  "company": {
    "name": "Anthropic",
    "domain": "anthropic.com"
  },
  "data": {
    "url": "https://www.cnbc.com/2026/09/28/anthropic-sonnet-5-5-launch.html",
    "title": "Anthropic launches cheaper AI model, its second release since CEO's call for a slowdown",
    "excerpt": "In this article Anthropic on Monday released a new artificial intelligence model called Sonnet 5.5, the company's second launch since CEO Dario Amodei called to slow down the pace of development. Sonnet 5.5 is a faster, lower-cost offering from Anthropic, and the company said it is better at coding, completing scoped tasks and creating polished documents, slides and spreadsheets than its predecessor. The launch comes less than one week after Anthropic introduced Opus 5.5 , a more expensive model, and it said Monday that Haiku 5.5, the cheapest offering in the suite, is coming soon. \"Sonnet is really for the cost-conscious customer where they might not need as much intelligence,\" Theo Chu, a research product manager at Anthropic, told CNBC in an interview. \"It might be routine tasks that just need execution, but don't need that judgment that Opus can bring.\" Anthropic's safety and security practices, as well as those of its competitors, have been under intense scrutiny in recent weeks after a growing chorus of researchers warned about AI's potential to cause catastrophic harm . In response, Amodei stunned the tech sector and government officials earlier this month by urging AI companies to slow how quickly they improve their most advanced models. The company said Monday that Sonnet 5.5 doesn't advance the frontier of its models' capabilities, so most of its alignment testing...",
    "product": "Sonnet 5.5",
    "summary": "Anthropic has launched Sonnet 5.5, a new, faster, and lower-cost artificial intelligence model.",
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    "image_url": "https://image.cnbcfm.com/api/v1/image/108363256-1789499134411-gettyimages-2294938529-2026_sep_14_dreamforce_1602.jpeg?v=1789499168&w=1920&h=1080",
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      "full_text": "a new artificial intelligence model called Sonnet 5.5",
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    "published_at": "2026-09-28T18:00:06Z",
    "effective_date": "2026-09-28",
    "article_sentence": "Anthropic on Monday released a new artificial intelligence model called Sonnet 5.5, the company's second launch since CEO Dario Amodei called to slow down the pace of development."
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