July 8, 2026 SpaceXAI launches Grok 4.5 for coding, agentic tasks, knowledge work. Trained alongside Cursor on tens of thousands of NVIDIA GB300 GPUs. Available in Grok Build, Cursor all plans, SpaceXAI console. API model grok-4.5 at 6 per M tokens. Not available in EU; mid-July expected. Free limited-time usage in Grok Build and Cursor. MoE architecture.