New Model Hits Opus-Level Benchmarks at Wild Efficiency, RL Infra Details Emerge
nrehiew_ · x · 2026-09-11
nrehiew calls a new model's benchmark numbers "insane" — Sol/Opus-level performance at that efficiency. His thread digs into its RL training infra: dispatch strategies eliminating long-tail stalls, router replay from previous checkpoints, dataset-level caps plus discard schemes to handle short completions, off-policy ratio bounding with loss masking, persistent KV/router caches, and full-vocab OPD on 40+ teacher models at the final stage.
Related event: Leaked DeepSeek V4.1 Flash Tech Report Reveals KV Cache-Obsessed Flagship(44 posts)→
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