Model
deepseek-v4.1-flash
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- Open weights & ecosystem 2
- Models & capabilities 2
- Compute & infrastructure 1
- Benchmarks & progress 1
- Ideas & essays 1
- Security & misuse 1
DeepSeek open-sources the inference engine behind its API
DeepInfer is Apache-2.0 and runs on Nvidia Blackwell-class GPUs and Huawei Ascend 950 chips; DeepSeek says one cluster serves 155 trillion tokens a day at about $38 of revenue per GPU-hour.
Open weights & ecosystem · Compute & infrastructure · Models & capabilities
GPT-6 Astra solves 49 of 50 unpublished theoretical-physics problems on a new benchmark
Physicist-built problems the authors call 'turn-the-crank' research tasks; Claude Opus 5.5 solved 46, Gemini 3.8 Flash 34 and the open-weight DeepSeek-V4.1-Flash 27.
Benchmarks & progress · Ideas & essays
CrowdStrike links South Korean bank breaches to an attacker using AI agents
A likely Chinese-speaking attacker ran ARTEX, an open-source pentesting agent, on DeepSeek, GLM and Grok via Claude Code; its exposed logs included a CV listing the attacks.
Security & misuse
DeepSeek releases V4.1-Flash and folds V4-Pro traffic into it
The open-weight model activates only about 8 billion of 552 billion parameters per token; from 14 September DeepSeek routes all V4-Pro API traffic to it at Flash's lower price.
Models & capabilities · Open weights & ecosystem