The Download: how AI really works, and phasing out animal testing

The article discusses OpenAI's new experimental large language model that aims to make AI more transparent and understandable. Google DeepMind's SIMA 2, powered by Gemini, shows progress in training agents for problem-solving in virtual worlds. Additionally, the UK plans to phase out animal testing by utilizing advanced technologies to model the human body and test therapies without the need for animal experiments. The piece also touches on other tech news, including Chinese hackers using AI for espionage, Blue Origin's successful rocket launch, and advancements in AI tools for organ transplants and prosthetics.