Anthropic Unveils 10T-Parameter Claude Mythos 5, Microsoft MAI at $0.36/Hour, SpaceX Buys xAI for $250B

Anthropic released Claude Mythos 5, a 10-trillion-parameter model focused on cybersecurity, uncovering thousands of zero-day vulnerabilities across major operating systems and browsers. Microsoft launched three MAI models on April 6, 2026, with MAI-Transcribe-1 priced at $0.36 per hour, setting speed records on benchmarks from 24 organizations. SpaceX acquired xAI for $250 billion in the last 24 hours as of April 3, 2026, merging AI with space tech.