Last Week in AI #241 - Opus 4.7, Muse Spark, GPT-5.4-Cyber, HY-World 2.0
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Apr 23, 2026 Coverage of major model releases like Opus 4.7 and Muse Spark, including new reasoning controls, vision and memory upgrades, and evaluation-awareness findings. Discussion of GPT-5.4-Cyber and Codex enhancements for security, plugins, and long-horizon tasks. Rundown of agent products, compute deals, legal battles, and geopolitical risks to AI infrastructure. Exploration of multi-modal 3D world models and AI-driven propaganda trends.
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Court Battles Leave Anthropic Partially Blacklisted
- Anthropic lost a DC appeals motion to pause the Pentagon blacklist; courts weighed financial harm to Anthropic against national defense procurement discretion.
- Two separate court paths mean Anthropic is excluded from some DoD contracts but can still work with other agencies while litigation continues.
Bezos Poaches Kyle Kozic For AI Infrastructure
- Jeff Bezos' AI lab hired Kyle Kozic from XAI/OpenAI to build large infrastructure projects, signaling serious hiring to scale compute.
- Kozic led rapid Colossus builds and brings VLA and supercomputer rollout experience to Bezos' lab.
Anthropic Rents CoreWeave Capacity Amid Compute Crunch
- Anthropic signed a multi-year deal to rent CoreWeave capacity as demand outstrips their data center builds, reflecting industry-wide compute bottlenecks.
- CoreWeave's aggressive expansion carries debt and lease risk while servicing most top AI providers.