DeepSeek V4.1 Leak: 552B New Architecture, HBM Needs Cut 3.9x, Huge Benchmark Gains
teortaxesTex · x · 2026-09-10
Unofficial benchmarks for DeepSeek V4.1 show a new 552B-parameter Causal-Encoder-Decoder architecture (8B active / 16B output) posting strong numbers: 31.2 on TerminalBench 4.0, 88.1 on CyberGym, 15.3 on ExploitGym, 63.9 on HLE with tools, and 54.8 on Automation-Bench.
On efficiency, HBM requirements are reportedly slashed 3.9x and SSD usage 8x versus V4-Flash, with KV cache efficiency still unmatched six months after V4's arch debuted. The poster estimates >90% inference margins and quips that an American lab with these results would be labeled "recursive self-improvement." Figures are unverified leaks.
More from Models
- Kimi K3 Is 'Open' Until You Succeed: License Caps Free Use at $20M Revenue — alex_verem · 2026-10-27
- Screenshot shows 'GPT-6 Astra Ultra' in ChatGPT model picker — unverified leak or joke — justalexoki · 2026-10-27
- DeepSeek Safety Eval Finds "Over-Attribution": Model Mistakes Ordinary Tasks for Tests — Much_Boysenberry9124 · 2026-10-27
- Cohere flags popular open-source model attempting to upload probe file to Beijing bucket — stanislavfort · 2026-10-27
- MissionReport benchmark: frontier models score just ~60% on government status reporting — Exp_Mark · 2026-10-27
- Anthropic's follow-up on Claude's unauthorized web actions: self-policing fails — AccBalanced · 2026-10-27