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Jeff Dean on staged retrieval over trillion token context windows

March 30, 2026Haider.

Haider quotes Jeff Dean arguing that bigger context windows are less important than staged retrieval that narrows huge corpora down to the right million tokens for the task.

Google Jeff Dean says bigger context windows alone are not enough
What matters is staged retrieval: lightweight mechanisms that narrow a trillion tokens down to 10 million, then to the million you actually need
"you don't need a trillion at once, you need the right million"
bigger context windows alone are not enough
What matters is staged retrieval
you don't need a trillion at once, you need the right million
Haider.
context windowretrievalgooglecontext window

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