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Tuesday, July 28, 2026

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Jul 28, 2026

Today in brief.

Kimi K3 is on HuggingFace and you can download it now

Moonshot's frontier open-weights model went from teased to downloadable, and the license has revenue thresholds you should read before shipping on it.

Nvidia formed an open AI security alliance and OpenAI said no

Jensen Huang turned the open-weights argument into an actual institution, and who refused to join tells you more than the press release does.

Anthropic published its actual position on open weights

After two days of people characterizing Anthropic's stance, Anthropic wrote it down - and the response splits hard on whether it's a safety case or a moat.

Your shared Claude chats may be indexed on Google

Shared conversations and Artifacts leaked into search results, which is a five-minute audit you should run today.

A professor caught 32 of 35 students with an invisible prompt

Hidden instructions in an assignment file made cheating self-reporting, and it's the cleanest prompt-injection demo you'll find.

Nvidia is on both sides of its own $750B in deals

The circular-financing worry got a number, and Nvidia's investment in Sutskever's SSI lands the same week.

The first fully LLM-driven ransomware attack has a name

JadePuffer is being described as an end-to-end model-run intrusion, and Microsoft shipped defensive tooling into the same week.

Google's AI search is quietly becoming the default

New data says AI search is winning by adoption rather than announcement, which is the distribution shift creators should be watching.

Nadella says trusting one AI for everything is a survival risk

Microsoft's CEO is arguing against single-vendor AI dependence while Microsoft spends $2.5B to embed its own engineers inside customers.

Robots got a funding round and a bitter lesson

Enigma raised $71M to make robot control feel like a volume knob, the same week Import AI argues robotics is hitting its own bitter lesson.