Last Week in AI Last Week in AI

#241 - Opus 4.7, Muse Spark, GPT-5.4-Cyber, HY-World 2.0

Apr 23, 2026

Summary

Hosts Andrey Krenkov and Jeremy Harris review a product-heavy week in AI, focusing on Anthropic’s Claude Opus 4.7 and its detailed safety system card. They discuss Meta’s MuseSpark model and OpenAI’s new GPT-5.4 Cyber variant, analyzing the trend of restricted access for frontier capabilities. The episode also covers OpenAI’s Codex updates, including computer use and image generation features.

Topics discussed

Sponsors: OutShift and Notion AI Agent Platform Intro, Host Updates, and Video Release Schedule Anthropic Opus 4.7: Benchmarks, Deception, and Safety Meta MuseSpark: Agent Architecture and Chain of Thought AI Infrastructure: Power Demands and Deception Eval Concerns Anthropic MIF: Cybersecurity and Access Restrictions OpenAI Codex, Google Gemini, and Adobe Firefly Updates Legal: Court Denies Anthropic's Motion to Block DOD Contract XAI Co-founder Departs for New Infrastructure Startup CoreWeave: Market Dominance, CapEx, and Data Center Delays Cohere: Financial Struggles, Pivot, and New Pricing Acqui-hires and Shoe Company Pivot to AI Open Source: Tencent 3D World Models and NVIDIA Memory AI Backlash: Attacks on Executives and Deepfake Misinformation Research: Automated Weak-to-Strong Alignment Research Research: Fragility of Vector Steering for Eval Awareness Geopolitics: Iran Threats, Banking Vulnerabilities, and Outro
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