Daily Brief 2026-03-15

BeastMaster Daily Brief — 2026-03-15

AI Intelligence

Anthropic’s 1M context window goes GA for Opus 4.6 and Sonnet 4.6 without premium pricing. OpenAI retires GPT-5.1, auto-migrates to 5.3/5.4, and ships write actions for Google/Microsoft apps in ChatGPT Enterprise. Prompt injection remains OWASP’s #1 LLM vulnerability at 73% of production deployments. Simon Willison reports AI-assisted rapid prototyping hitting mainstream. OmniCoder-9B lands on Hugging Face as the first open coding agent trained on multi-provider agentic trajectories.

Anthropic 1M Context GA for Opus 4.6 / Sonnet 4.6 (Simon Willison / Anthropic)

OpenAI Retires GPT-5.1, Ships Write Actions for Enterprise Apps (OpenAI release notes (releasebot.io))

Prompt Injection Still #1: 73% of Production AI Vulnerable (OWASP GenAI Security Project / SecurityBoulevard)

Audiobook Recommendations

Agentic Artificial Intelligence – Harnessing AI Agents to Reinvent Business, Work and Life by Pascal Bornet, Jochen Wirtz, Thomas H. Davenport

Artificial General Intelligence (AGI): The Symbiotic Future of Humans and Machines by Dr Samuel Xiangming Li

Quantum Machine Learning by Ajit Singh

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