
Grok 4.5 Claims to Beat Opus 4.8. Cursor's Own Fine Print Says Otherwise.
Cursor and SpaceXAI shipped Grok 4.5 on July 8 — the first model release since SpaceX’s $60B Cursor acquisition, priced at $2/$6 per million tokens against Opus 4.8’s $5/$25. It wins on Terminal-Bench 2.1 (83.3% vs. 78.9%) but loses badly on SWE-bench Pro (64.7% vs. Opus 4.8’s 69.2% and Fable 5’s 80.3%) — and Cursor disclosed its own benchmark data was contaminated with a leaked snapshot of Cursor’s codebase.








