Karpathy lays out the race for a small on-device LLM "cognitive core" as JEV positions itself as a first step

Paimaamu · x · 2026-09-18

Karpathy describes an industry race toward an LLM "cognitive core": a few-billion-parameter model that maximally trades encyclopedic knowledge for capability, always-on by default as the kernel of personal AI computing. Its emerging features include natively multimodal text/vision/audio I/O, Matryoshka-style architecture with a test-time capability dial, tunable reasoning (system 2), aggressive tool use, on-device LoRA slots for personalization, and selective delegation to cloud oracles when online.

Responding, the JEV team says the project is indeed a step toward this: rather than shrinking the model and losing intelligence, they sacrifice text generation for composability. The thread sketches a roadmap where small on-device models, not cloud LLMs, form the base layer of personal computing.

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