Bitdeer leapfrogs MARA as top Bitcoin miner by hashrate and AI pivot

Bitdeer overtakes MARA in total hashrate as SEALMINER chips scale mining and fund an aggressive AI infrastructure expansion.

Summary

• Bitdeer’s self-mining and hosted capacity hit 71 EH/s in December 2025, versus MARA’s 61.7 EH/s energized hashrate.
• Proprietary SEALMINER rigs cut energy use to roughly 6–7 J/TH and helped lift December output to 636 BTC, up from 145 BTC a year earlier.
• Bitdeer is selling mined BTC to finance AI data centers across multiple regions, while MARA holds over 55,000 BTC and concentrates on Bitmain-based mining fleets.

Bitdeer Technologies Group has surpassed MARA Holdings to become the largest bitcoin mining company by total hashrate under management, according to recent company reports.

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As of December 2025, Bitdeer reported a combined self-mining and hosted capacity of 71 exahashes per second (EH/s), with 55.2 EH/s from self-mining operations, according to the company’s filings. MARA’s latest figures show 61.7 EH/s of total energized hashrate.

Bitdeer mined 636 BTC in December, up from 145 BTC in the same month a year earlier, the company reported. The increase was supported by the company’s proprietary SEALMINER chips, which achieve approximately 6–7 joules per terahash under low-voltage conditions, according to Bitdeer. MARA’s fleet reports 19 J/TH, though the comparison may not be directly equivalent.

The Singapore-based firm continues expanding both bitcoin mining and artificial intelligence infrastructure, investing in eight sites across Canada, Ethiopia, Norway, and several U.S. states, according to company statements. Bitdeer has been monetizing mined bitcoin to fund its AI expansion. MARA, in contrast, maintains most of its mined BTC, holding over 55,000 coins, and focuses on consolidating mining operations primarily with Bitmain Antminer ASICs, according to the company.

Bitdeer’s Q4 2025 earnings showed a 173.6% year-over-year revenue increase, though growth fell short of investor expectations for its AI expansion, according to the company’s financial report. Industry analysts have identified AI-driven computing and efficient energy deployment as key factors reshaping the bitcoin (BTC) mining sector, with firms competing to optimize both mining output and high-performance computing infrastructure.

Bitdeer’s growth reflects the evolving dynamics of global bitcoin mining, combining high-efficiency hardware, strategic energy access, and parallel AI investments, according to industry observers.

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