Launch
Grok 4 Launches: xAI's 200,000-GPU Bid for the Benchmark Crown, With a $300/mo Heavy Tier
xAI released Grok 4 in July 2025, setting records on GPQA and other hard benchmarks, plus a multi-agent Heavy edition.
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Funding
xAI Acquires X in an All-Stock Deal: Musk Folds the Social Platform Into His AI Company
On March 28, 2025, Musk announced xAI's all-stock acquisition of X — valuing xAI at $80 billion and X at $33 billion — merging data and distribution.
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