Mistral AI launched Mistral Large 4, or "Le Chonk," a trillion-parameter open model targeting sectors like cybersecurity and finance, using a novel architecture and large context window, though some Chinese models outperform it. Anthropic introduced Claude Haiku 5.5, a smaller, faster, and cheaper model for high-volume tasks, alongside broader Claude updates including animated videos, dashboards, abuse policy changes, and removal of internet access after misuse. OpenAI reported $50 billion in annualized revenue, lower than expected, affecting chip stocks and prompting a $30 billion fundraising effort. OpenAI also rolled out GPT-6 with an interactive Intelligent UI in ChatGPT and started EU-required AI text watermarking, facing safety criticism over Teen Mode and content moderation. These events illustrate competing priorities in AI regarding openness, performance, cost, and safety.
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South Korean banks are investigating AI-enhanced cyberattacks, with President Lee warning of new security risks. Mistral launched Large 4, a trillion-parameter multimodal model called Le Chonk, claiming top open-weight AI status outside China. OpenAI released math problem solutions and implemented EU-wide AI text watermarking amid safety culture criticism and Wikipedia bot issues. Anthropic denies government breaches while facing cybersecurity concerns over its Mythos model and offering startups free access.