DeepMind's Prateek Jain on MatFormer: agents that dial compute up or down by task difficulty

jainprateek_ · x · 2026-09-04

In the interview 'Routing Intelligence', Prateek Jain, Distinguished Scientist at Google DeepMind, discusses his MatFormer research: today a model spends the same compute on every token, easy or hard. MatFormer is an architecture that nests smaller transformers inside a big one, letting an agent dial compute up or down depending on task difficulty.

The interview also covers two high-level approaches to making AI agents work on hard problems for long horizons — giving them enough context to hold more information, and elastically matching model scale to difficulty at the architecture level.

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