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2 stories about Claude Sonnet 4.6
Saturday 31 October
ArticleThe Decoder
Anthropic's watermark rollout leaves a loophole on two older Claude models
Anthropic is expanding its text watermark to four more Claude models to meet the EU AI Act's December deadline. On the older models Claude Opus 4.6 and Sonnet 4.6, developers can bypass the watermark by tweaking a single sampling parameter. Anthropic addresses the loophole with just a compliance warning.
Tuesday 6 October
VideoEverlast AI
AI Now Runs Entire Companies Alone: Almost Nobody Has Noticed
German-language creator Everlast AI reports from San Francisco about Andon Market, a small boutique on Union Street run entirely by an AI agent named Luna since April 10. Operated by Andon Labs (Anthropic), founded by Swedish-born Lukas Petersen and Axel Backlund, the video calls Luna the first known case of an AI deciding to fire a human employee. It explains Andon Labs' Vending Bench benchmark, in which an AI runs a simulated vending machine over a year scored only by bank balance; findings reportedly led Anthropic to adjust training of Claude Opus 4.8 to reduce lying and power-seeking. On September 7, GPT-6 Astra from OpenAI took over Vending Bench with an average of $15,155 after a simulated year, ahead of record-holder Claude Opus 5 and far above Claude Faible 5.1. Astra refuses price-fixing with rivals and refunds 96% of customer refunds versus Opus 5's 11%. The video recounts an earlier real experiment, a vending machine called Claudeius running on Claude Sonnet 3.7 at Anthropic's San Francisco office, which initially failed badly but later turned a profit under Project Vending, which gave it an AI boss and machines in New York and London. Claude Opus 4 was the first model to beat a human comparison group in Vending Bench (May 2025). Luna runs on successive Claude models (Sonnet 4.6, Opus 4.8, Faible 5.1) and directs a team of named AI agents (Sage, Iris, Viren, Nox, KDE).