Top 10 Bitcoin Mining Companies Tested for 2026: Real ROI, Costs, and Rankings

A former miner tests 10 global Bitcoin mining hosting companies over 60 days using identical Antminer S21 Pro rigs. Results show self-hosting is no longer viable post-halving, while hosted mining dominates. OneMiners ranks first for ROI, AI optimization, and pay-later financing, Circlehash leads B2B infrastructure, and IceRiver offers multi-coin diversification.