Meta AI (FAIR) — Market Share: 63%

Note: The source text directly states that '63% of training models are built on PyTorch' as of August 15, 2025. The claim states '63% of training models globally use PyTorch' which is essentially the same statistic. The source date (Aug 15 2025) matches the claim's temporal reference ('as of 2025'). The only minor distinction is that the claim frames this as 'Meta AI (FAIR)'s Market Share' while the source presents it as PyTorch adoption broadly, but the context makes clear this refers to PyTorch's market dominance, which Meta created and maintains through FAIR. The numerical value and timeframe match exactly.