DeepSeek V4.1 Flash ships open weights, beats GPT-5.6 Sol and Claude Opus 5 on 4 of 5 agentic benchmarks
AryHHAry · x · 2026-09-14
- The thread juxtaposes two nearby events: Dario Amodei's Sept 12 essay "We Must Pace the Frontier" urging the industry to slow capability gains, and DeepSeek's V4.1 Flash weights landing on Hugging Face two days earlier, under an MIT license allowing commercial use, modification and redistribution.
- Amodei proposes three steps: embedded evaluators with employee-level access, coordination among democracies, and global coordination; he acknowledges competitor pacing agreements sit near antitrust territory and would need government mediation or narrow waivers. Altman, Musk and Hassabis responded the same day.
- The quoted post argues a freely downloadable 510GB weight file renders the slowdown proposal moot. Per its model card, V4.1 Flash beats GPT-5.6 Sol and Claude Opus 5 on four of five hardest agentic benchmarks: DeepSWE v1.1 74.2 vs 73.0, AutomationBench 54.8 vs 45.8, Agent's Last Exam 31.8 vs 26.7, CyberGym 88.1 vs 84.5.
Related event: DeepSeek V4.1 Flash Launches Open-Source, Beats GPT-5.6 at One-Third Cost(4 posts)→
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