Recommended paper from Sakana AI on recursive self-improvement. They propose an interesting way to scale recursive self-improvement through multi-agent self-supervision. In this line of research, self-improvement loops usually need an external verifier, so open-ended tasks without a checker are left out. MASS removes that requirement. One base model proposes multi-agent workflows, runs them and grades them, and an evolutionary search keeps the workflows that score best. The model is then fine-tuned on its own traces, and the improved model starts the next cycle as a better optimizer and grader. Two cycles on Qwen3.6-27B raise performance per output token from 1.2 to 1.6x on four open-ended benchmarks. A student trained on multi-agent traces also beats a single-agent student trained on 1.4x more tokens. Paper: Chat with Paper: