Expired60% confidenceFactExact time
Grok 4.5 was trained by xAI and involves deep collaboration with Cursor.
2
Sources
60%
Confidence
Medium-term (~90 days)
Relevance
7/10/2026
First Seen
Valid until: 10/8/2026(expired)
Sources
Grok 4.5 Deep Dive: Coding on Par with Top Models, at a Fraction of the Cost
youtubeTheo - t3․gg7/9/2026
Related Claims
UnverifiedGrok 4.5 采用 MoE（混合专家）架构，训练中包含数万亿 token 的 Cursor 数据76% similarUnverifiedThe Grok 4.5 High Fast model is now available in Cursor74% similarUnverifiedGrok 4.5's training incorporated tens of trillions of Cursor usage data and was combined with an RL training pipeline.72% similarUnverifiedThird-party monitoring account LuminaBench reports that Grok 4.8 has appeared in Cursor's server-side model list, but neither xAI nor Cursor has officially confirmed this.71% similarUnverifiedCursor has now become part of xAI.70% similar
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