As Bitcoin miners look for new sources of revenue, they are investing billions of dollars in artificial intelligence (AI) and high-performance computing (HPC). The hunt for new income lines follows the April 2024 halving, which cut the per-block subsidy paid to miners from 6.25 BTC to 3.125 BTC and squeezed margins across the sector. The latest data from BlocksBridge Consulting shows just how expensive that transition has become. Figures from the firm's Miner Weekly newsletter detail both the scale of the capital outlay and the still-narrow revenue base it has produced so far: a 15-company cohort recorded capital spending of $30.7 billion across its latest 2026 reporting periods, while nine comparable Bitcoin miners generated $341.2 million in AI and HPC revenue during the first half of the year after spending $5.11 billion.

Bitcoin Miners Push 2026 Capital Expenditure Higher

According to the newsletter, 12 public mining companies tracked by TheEnergyMag spent $6.87 billion in net cash capital expenditure during the first half of 2026. That figure already surpasses the $6.50 billion spent throughout all of 2025.

The acceleration tracks a broader AI infrastructure boom in which the largest cloud providers have been reporting combined quarterly capital spending in the tens of billions of dollars as they race to add data center capacity.

The scale of the expenditure becomes even more startling when Applied Digital, CoreWeave and Nebius are added to the list. The resulting 15-company group clocked capital spending totaling $30.7 billion in its latest reporting periods for 2026, which is 42.6% higher than the $21.53 billion recorded for the entire year of 2025.

Combined, CoreWeave and Nebius contributed almost 75% of that total. Neither is a Bitcoin miner: CoreWeave is a specialized GPU cloud operator and Nebius is an AI infrastructure company, which is why their budgets dwarf those of the former miners on the list. CoreWeave spent $14.12 billion on property and equipment during the first six months of 2026, while Nebius invested $8.13 billion in property, equipment and intangible assets.

Among the former miners and mining companies on the list, capital spending was led by TeraWulf at $1.61 billion, followed by Applied Digital with $1.58 billion, Core Scientific with $1.18 billion, and Cipher with $911.5 million.

AI Revenue Grows, But the Gap Remains Huge

The miners' AI transition is beginning to yield more revenue, although the amounts remain modest in comparison with the scale of the capital the transition is consuming.

Across the nine miners with comparable Q1/Q2 data, AI cloud, HPC and colocation revenue grew 52% quarter over quarter, rising from $135.4 million in Q1 to $205.8 million in Q2.

Core Scientific Leads the Revenue Growth

Core Scientific posted the biggest percentage gain of the group, with colocation revenue totaling $136.7 million, up from $77.5 million in the previous quarter. That business runs under multi-year HPC colocation contracts with CoreWeave, the same company that tops the group's capital-spending table. TeraWulf's HPC segment grew from $25.9 million to $31.9 million, and Bitdeer's AI Cloud segment expanded from $3.7 million to $14 million.

Despite this growth, the capital-to-revenue gap remains large. During the first half of the year, the nine comparable miners reported combined revenue of $341.2 million from AI and HPC, against total capital expenditure of $5.11 billion. That means capital expenditure is currently running at roughly 15 times the level of their new AI-related revenue.

AI Infrastructure Requires Heavy Upfront Spending

The shift from mining to AI infrastructure is more than a repurposing of power assets. While these mining companies may already hold electricity contracts and land or grid connections, AI facilities require a comprehensive upgrade: substations, buildings, advanced cooling, networking systems, and in some cases high-cost GPUs.

In addition, this income tends to arrive later than the payments. Capital is spent first on construction and equipment purchases, and revenue usually begins only once capacity is up and running and accepted.

The question now facing Bitcoin miners on the AI and HPC side is whether these substantially larger payouts can keep up with the billions of dollars already invested in infrastructure. The next round of quarterly filings will show whether the 52% quarter-over-quarter revenue growth persists as more contracted capacity comes online, and whether the 15-to-1 spending gap begins to close.