Rohan Paul highlights an architectural explanation that Gemma 4 uses mostly cheap local sliding window attention with occasional full attention to save memory while supporting long context.
The big idea here is a very aggressive memory-saving redesign of attention: Gemma 4 does most of its work with cheap local sliding-window attention, then inserts occasional full
This finding is one of many signals tracked across Artificial Intelligence. The live feed updates every few hours with new expert voices, debates, and emerging ideas.
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