Low-Zi-Hong sliced a ~0.4B BitNet model across a cluster of seven ESP32S3 microcontrollers connected by daisy-chain SPI: master handles tokenization and embeddings, six compute nodes process four transformer layers each using 1.58-bit ternary weights from flash. It works. It is slow. It is the most literal possible demonstration of the BitNet "run anywhere" claim.
Two independent projects landed on Hacker News today pursuing the same idea from different directions: fit something genuinely useful into the smallest possible package. One runs a 28.9M-parameter LLM at 9.5 tok/s on an $8 ESP32-S3 by keeping the embedding table in flash. The other fits complete voice synthesis into 9.36M parameters that run faster than real-time on a laptop CPU. Neither is frontier work. Both are instructive about what constrained-environment AI actually requires.
PrismML launched Bonsai on March 31, claiming the first commercially viable true 1-bit LLMs: an 8B model that fits in 1.15 GB and runs at 131 tokens/sec on an M4 Pro. The key word is "true" — every layer, including embeddings and attention, is 1-bit, not just the weights in isolation.