SpaceXAI launches Grok 4.5 model

SpaceXAI released Grok 4.5, its first model since going public and acquiring Cursor. Priced at $2 per million input tokens and $6 per million output tokens, it undercuts Anthropic's Opus 4.8 and OpenAI's GPT-5.6 Luna. Elon Musk called it an Opus-class model that is faster, more token-efficient, and lower cost.