The three biggest AI stories in the world in October 2025 are: (1) OpenAI’s DevDay unveiling of the Apps SDK and its $500 billion valuation milestone, marking a new phase in global AI platformization; (2) AMD’s historic $100 billion AI chip deal with OpenAI, signaling a seismic shift in semiconductor power dynamics; and (3) DeepMind’s AlphaEvolve breakthrough in automated theorem discovery, redefining how AI contributes to theoretical science.
Pushmeet Kohli, as head of AI for Science at DeepMind, led the team that created AlphaEvolve. Screen capture from a DeepMind YouTube video (uploaded 9 Oct 2024).
The three biggest AI stories in the world for September 2025 are: (1) the advancement of California’s “Frontier Model” AI safety bill, (2) a federal judge’s rejection of Anthropic’s massive copyright settlement, and (3) Google’s expansion of AI Mode search to new languages. Each reflects a major inflection point in AI governance, legal risk, and global application. (Also see Three Biggest AI Stories in August 2025.)
California’s Frontier Model AI Safety Bill Advances
1. OpenAI Launches GPT-5: A New Era in AI Reasoning
The unveiling of GPT-5 by OpenAI on August 7, 2025, set a new benchmark for generative AI. GPT-5 introduces a step-change in technical capabilities, especially in reasoning and multi-modal understanding. Its ability to integrate text, image, and voice processing in a unified model marks a significant evolution from previous generations. Benchmarks suggest a 40% improvement over GPT-4 in handling complex reasoning tasks, from scientific problem-solving to autonomous coding and data analysis. champaignmagazine
Educational Technology and Change Journal 
