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Anthropic launched Claude Opus 5.5 with 40% lower typical running costs and faster output while reports tie the company to a November IPO near $2 trillion. Key Points: Anthropic says Opus 5.5 costs about 40% less than Opus 5 on typical token-billed workloads. The model scored 66.4% on Terminal-Bench

Security researchers used Anthropic's Claude Opus 5 to hijack an OpenAI employee's ChatGPT account and reach the company's internal code in under 72 hours. Key Points: Researchers chained a forum image bug with an OpenAI login flaw to take over ChatGPT and Codex accounts. A newer Claude model built

Anthropic merged Claude Cowork into its main chat and launched two beta tools, Claude Docs and Claude Slides, so users no longer pick a mode before starting work. Key Points: Claude now decides on its own whether a request needs a quick reply or a longer agentic task. Claude Docs and Claude Slides a

Anthropic says Claude was used in cyber campaigns targeting more than 20 organizations and to engineer a Mali surveillance system monitoring roughly 25 million SIM cards. Key Points: Anthropic said a Russian-speaking operator used Claude-driven workflows across espionage operations targeting more th

Anthropic has confirmed that hackers are hijacking Claude login sessions with infostealer malware and draining paid usage, including from one consultant's $200-a-month account. Key Points: Anthropic began warning subscribers on Aug. 30 that stolen browser sessions were letting attackers consume paid