13 agents, 12 days, a Git DAG as shared memory, 62% of the gap to GPT-2 124M closed.

arXiv 2609.18094 stores autonomous research as an append-only DAG of Git commits, so any agent can check out a prior commit to verify a claim or build on it, with a diversity index preventing population convergence on one approach. A 12-day run on weight initialization produced 1,703 contributions and moved performance from 3.39 to 1.899 bits per byte. The winning solution traced back through 145 commits across 15 accounts, and 165 independent reproductions ran without failure. The reproduction count is what separates this from the usual multi-agent-research demo.