Shared from twixb · technologyreview.com

The Download: AI bottleneck debates, and BCI trials take off

technologyreview.com·Jun 19, 2026

AI startup Subquadratic claims to have solved a long-standing mathematical bottleneck in large language models (LLMs), resulting in a faster, cheaper, and more energy-efficient model, although skepticism remains among experts. Additionally, advancements in brain-computer interface (BCI) technology are gaining traction, with a notable increase in trial participants and the first medical approval for a BCI in China.

AI startup Subquadratic claims to have resolved a long-standing mathematical bottleneck in large language models (LLMs) by reducing the computational load required by transformers. This breakthrough could lead to LLMs that are faster, cheaper, and more energy-efficient. If verified, this advancement could significantly impact AI infrastructure and model training costs, making it a pivotal area to monitor for developments in AI deployment efficiency.

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