In October 2025, the global top-tier Bitcoin miners slightly increased production, overall costs, and network difficulty reached new all-time highs. At the same time, several mining firms began shifting their strategic focus toward AI-related data infrastructure. This shift aimed to diversify revenue streams and reduce dependence on Bitcoin price volatility. Slight Drop in Bitcoin Production, Growing Trend of BTC Sales Compared to September, overall Bitcoin (BTC) mining output declined slightly, primarily due to higher mining difficulty and unstable power supplies across several North American regions
source: https://beincrypto.com/october-btc-mining-high-costs-tight-margins-and-ai-transformation/