Grok-X, the AI division of X, has announced the release of Grok 4.5. This new model is reportedly capable of performing comparably to Anthropic's Opus 4.8. The announcement was made on July 9, 2026. AI
IMPACT Grok-X's release of Grok 4.5 challenges existing benchmarks and may spur further competition in the high-performance LLM space.
RANK_REASON Frontier-lab model release with system card. [lever_c_demoted from frontier_release: ic=1 ai=1.0]
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