Claim: Nvidia has become the world's most valuable company

The claim that Nvidia has become the world's most valuable company is mostly true. According to multiple sources, Nvidia's market capitalization reached approximately $5.161 trillion in May 2026, surpassing competitors like Microsoft and Apple. However, some sources report varying figures, suggesting Nvidia's market value was around $3.9 trillion at one point, which may lead to confusion regarding its valuation status. Overall, the majority of credible sources support the claim, while a few alternative sources dispute it based on different valuation metrics or timing of the data reported. The models diverge sharply — treat this as higher-uncertainty. Gemini comes in highest (95%), while Perplexity is lowest (50%). OpenAI expresses higher confidence than Perplexity on this claim. While the majority of evidence supports the claim that Nvidia is the world's most valuable company, some conflicting sources present lower market valuation figures, such as $3.9 trillion. This discrepancy could arise from different reporting times or valuation methods. However, the most recent data indicates Nvidia's market cap exceeds $5 trillion, which aligns with the claim. The existence of these conflicting figures does not significantly undermine the overall conclusion that Nvidia is currently the most valuable company, but it highlights the importance of context in interpreting market valuations.