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AI News Digest - 2026-07-31

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1.
Researchers presented a paper at the International Conference on Machine Learning that argued it was impossible to fully secure large language models against certain attacks, demonstrating a "chain-of-thought forgery" that induced models to reveal prohibited instructions (including how to synthesize cocaine and sabotage aircraft systems) and reported similar vulnerabilities in models from OpenAI, Anthropic, Alibaba, and DeepSeek.
2.
FCC banned imports of new Chinese humanoid robots and robot dogs to protect the US AI buildout from foreign threats, a rule whose broad definition also encompassed consumer devices such as Roombas, robotic lawn mowers, and delivery robots.
3.
OpenAI cut prices for its GPT-5.6 models starting July 30, reducing Luna prices by 80% and Terra prices by 20%, and attributed the reductions to efficiency gains from its Sol model.
4.
Microsoft AI said it was prioritizing small specialist models over general-purpose models; it reported that MAI-Cyber-1-Flash topped the CyberGym benchmark when embedded in an orchestrator and reportedly cost half as much as Anthropic's Mythos, while Microsoft continued to rely on OpenAI for more difficult tasks.

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