3 synthetic long-range tasks · sequence length 32–64 · no Mamba / RWKV / Hyena comparison yet
3,000 candidate architectures searched across 45 atomic mechanisms — 99.6% evaluated successfully, top 10% re-run at full length. The winner uses none of the 5 hand-designed mechanisms tried first. Real-scale comparison against subquadratic baselines is what the next round of compute is for.