Last Week in AI #231 - Claude Cowork, Anthropic $10B, Deep Delta Learning
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Jan 21, 2026 Anthropic unveils a new cowork tool integrating Claude Code, promising efficiency across various tasks. The company raises a staggering $10B, highlighting the booming AI startup market. Meanwhile, Nvidia struggles to meet the demand for H200 chips amid supply challenges from China. Significant discussions arise surrounding U.S. export controls, with key figures debating the future landscape of AI. Google faces backlash after removing flawed AI health summaries, raising safety concerns about technological integration in personal health.
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Two-Pass Loop Improves Coding Models
- iQuest Coder V1 uses a two-pass 'loop' workflow to build global KV caches then refine locally.
- Multi-pass processing boosts coding benchmarks for 40B models without enormous parameter increases.
Hybrid Mamba+Transformer Yields Efficient Reasoning
- Falcon H1R-7B mixes Mamba2 recurrence with transformer heads to reach strong reasoning in a 7B model.
- Parallel hybrid layers let Mamba handle long memory while attention handles precise relations.
Delta Operator Extends Residual Flexibility
- Deep Delta Learning generalizes residual streams by learning directional transforms (Delta operator).
- The operator lets models flip or erase features, overcoming additive-only residual limits.