SpaceX AI launched Grok 4.5, its first major model update since listing. Musk touts it as an Opus-level model but faster, more token-efficient, and cheaper. It handles coding, office tasks, and research, with benchmark performance near top tier. Key advantage: double token efficiency. Pricing aggressively at $2/$6 per million tokens versus Anthropic Opus $5/$25 and OpenAI Sol $5/$30. Full public release expected next day.