Tuesday, 29 September 2026Updated 27m ago
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Anthropic releases Sonnet 5.5, its second model in the Claude 5.5 family

3 sources · first seen 23:30 28 Sept · updated 23:54 28 Sept

The brief

Written from 3 reports · check the source before you trade
  • Anthropic says Sonnet 5.5 improves on its predecessor in coding and knowledge work
  • The company says the model does not advance the AI frontier

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38 stories this week
  1. 26 SeptSam Altman and Dario Amodei warn AI could threaten humanity, propose improved safeguards1 source
  2. 25 SeptAnthropic introduces system for AI agents to control lab equipment and run experiments2 sources · Anthropic's Model Hardware Standard creates a common interface for lab equipment
  3. 25 SeptOpenAI to preview cybersecurity-focused GPT-6 model within daysExpansion · 3 sources · The preview is expected within days
  4. 24 SeptWhite House seeks review of OpenAI and Anthropic models before UK testingPolicy · 6 sources · The US administration wants to review new models before they are shared with UK partners
  5. 24 SeptAnthropic unveils a previously unknown enzyme system from its molecular biology lab2 sources · Anthropic said its molecular biology lab made its first discovery: a previously unknown enzyme system
All Anthropic stories →

Read the reports

3 reports · earliest 23:30
CNBCAnthropic launches cheaper AI model, its second release since CEO's call for a slowdown23:30Economic TimesAnthropic rolls out second Claude 5.5 model as it builds toward IPO23:32CNBC-TV18Anthropic launches Claude Sonnet 5.5 as AI lab expands model lineup23:54