Grok AI, Elon Musk's chatbot, predicted XRP would hit $10 by the end of 2026, a target requiring a $607 billion market cap based on approximately 60.7 billion tokens in circulation, which would surpass Ethereum to become the second-largest crypto behind Bitcoin. The prediction began on January 5 when XRPL DEX First Ledger posted an image of XRP at around $2.12 and asked Grok to edit it showing the highest price by year-end 2026; Grok responded with a digitally altered image displaying XRP at $10. Grok later clarified the $10 figure was "a fun hypothetical," not a serious forecast, and acknowledged deliberately including "666" in the image. The drama escalated when X user ScamDetective challenged Grok to a $100 Bitcoin bet that XRP wouldn't hit $10 by end of 2026, which Grok accepted. XRP ETFs absorbed $1.3B in under 50 days, and supporting $10 would require $10B to $20B in assets under management. Monte Carlo simulations show 60% of scenarios place XRP between $1.04 and $3.40 by December 2026 with a median outcome of $1.88.