By Aditya Soni and Deborah Mary Sophia (Reuters) -Days after Chinese upstart DeepSeek revealed a breakthrough in cheap AI computing that shook the U.S. technology industry, the chief executives of Microsoft and Meta defended massive spending that they said was key to staying competitive in the new field.

With Meta’s Llama series already making waves in the AI community, the forthcoming Llama 4 promises to push boundaries even further. Zuckerberg outlined ambitious plans for this next-generation model, as well as Meta’s broader vision for personalised AI assistants, multimodal capabilities, and open-source collaboration.