Developer compiles a RISC-V CPU into Qwen3.5-4B weights
10/28/2026 — 10/30, 11:13·2 sources (all)·2 reports (all)
Key takeaways
- Developer Divyansh Agrawal compiled a 32-bit RISC-V CPU into the Qwen3.5-4B weights, using the model's own Gated DeltaNet attention layer as…
Background & analysis
On 28 October 2026, Reddit user LatentSpacer posted in the LocalLLaMA subreddit that a developer had built a 32-bit RISC-V CPU directly into the weights of Qwen3.5-4B, allowing the model to execute instructions from inside itself. The post linked to a technical write-up, a Hugging Face model page, and a live demo, and the submitter suggested this might have implications for tool calling and computer use.
A follow-up report on 10:50 on 30 October 2026 gave more detail. The developer, Divyansh Agrawal, compiled a RISC-V CPU into the weights of Qwen 3.5 4B and used the model's own Gated DeltaNet attention layers as memory, naming the project Qwenputer. The report stressed that this is neither a plugin, nor tool calling, nor a sandbox: the CPU runs entirely within the model's forward pass, executing arithmetic, C, and MicroPython code with no external runtime required.
At this point the story rests on two reports. The idea that this could affect tool calling and computer use was raised by the Reddit submitter as a possibility, not an established outcome, and no further verification or subsequent developments have been reported yet.
AI-generated from 2 reports · updated 20 hours ago
Latest turnDeveloper Divyansh Agrawal has compiled a functional RISC-V CPU directly inside the weights of Qwen 3.5 4B, using the model's Gated DeltaNet attention layer as memory. The CPU executes arithmetic and C code entirely within the model's forward pass without an external runtime.
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Developer Divyansh Agrawal has compiled a functional RISC-V CPU directly inside the weights of Qwen 3.5 4B, using the model's Gated DeltaNet attention layer as memory. The CPU executes arithmetic and C code entirely within the model's forward pass without an external runtime.
开源中国AI score 64
A Reddit user on r/LocalLLaMA flagged a project that builds a 32-bit RISC-V CPU directly inside the weights of Qwen3.5-4B so it can execute instructions internally. The post links a write-up, a Hugging Face model and a live demo, and argues the approach could matter for tool calling and computer use.
Reddit · LocalLLaMAAI score 53
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