Grok 4.5

SpaceXAI's newest flagship (announced July 8, 2026, public July 9), the first model shipped since the SpaceXAI rebrand and since acquiring Cursor; positioned by Elon Musk as 'Opus-class... but faster, more token-efficient and lower cost' and 'roughly comparable to Opus 4.7, but much faster.' Powers the Grok Build CLI, is available in Cursor on all plans, and via the SpaceXAI console; not yet available in the EU at launch (targeted mid-July 2026). Ranks 4th on the Artificial Analysis Intelligence Index (score 54) behind Fable 5, GPT-5.5, and Opus 4.8, but at roughly 60%+ lower price than Opus 4.8/GPT-5.5, with markedly lower average output-token usage per task (token efficiency claim).