xAI — Valuation: $80 billion

Note: The provided source URL (https://www.wsj.com/tech/ai/elon-musks-xai-is-in-talks-to-raise-funds-at-a-valuation-of-up-to-75-billion-a57a2e66) returns a 404 'Page Not Found' error. The source text excerpt contains only the error page content with market indices and unrelated articles, not the actual WSJ article about xAI's valuation. While the additional context mentions a '$75-80B' range and the URL title suggests 'up to 75 billion', the actual article content cannot be verified from the provided source material. Therefore, the claim cannot be confirmed or contradicted based on accessible source content.