Replit drops a rolling free tier powered by GPT-5.6, Google wins a bankruptcy auction for 600 million Spirit Airlines messages to train its models, and the Merck-Moderna cancer vaccine Phase 3 trial succeeds after AI picked every patient's targets. Also: an open-source personal assistant built on Claude Code, free AI courses from Anthropic, Stripe names January 1st as the singularity's start date, and a voice-cloning tool that speaks 14 languages from a single clip.