Morning Edition · Thursday, October 29, 2026Published at 2:14 AM EDT · New York

Developer compiles an exact RISC-V CPU into Qwen3.5-4B and uses its Gated DeltaNet state as memory

The compiled model, Qwenputer, runs C and MicroPython inside its forward pass and scores 97.5% to 100% on DeepMind arithmetic tasks, at the cost of doubling the checkpoint to 18.8 GB.

Divyansh Agrawal, an independent developer, published Qwenputer, a modified Qwen3.5-4B with a 32-bit RISC-V CPU built directly into its weights. The CPU consists of 11 transformer layers placed in front of Qwen's own layers. None of their w…