Compute Costs for Anthropic Estimated at Between $542 Billion and $567 Billion

Anthropic's IPO prospectus has revealed the company's massive spending plans on compute and infrastructure, totaling between $542 billion and $567 billion.

The document highlights the critical role of compute in Anthropic's business, stating that it is essential for developing, training, improving, and deploying frontier models. However, the market for compute is intensely competitive, with large technology companies vying for dominance.

Anthropic has already committed to significant spending on compute, signing a $417 billion deal with various providers in December 2025. This deal includes contracts that will start between 2026 and 2027 and last from one to 20 years. The company also plans to secure additional capacity starting between 2028 and 2031, totaling $125 billion to $150 billion.

Compute is Anthropic's largest operating expense, accounting for $5.6 billion in the second quarter of 2026 alone. Despite this significant expenditure, the company has managed to generate substantial revenue from its spending on compute, posting $11.6 billion in revenue during the same quarter.

Anthropic's focus on improving its revenue-to-compute ratio is evident, with a goal of generating more income from each dollar spent on compute. The company will need to sustain this performance as it continues to invest heavily in its infrastructure and operations.

The prospectus also underscores the significant risk factor associated with Anthropic's reliance on external providers for its computing needs. If these deals do not materialize or if prices rise, the company's ability to access sufficient compute could be severely impacted.

Anthropic's compute infrastructure is being built on a foundation of partnerships with leading cloud service providers. The company has secured deals with Amazon, Google, and Microsoft to access significant amounts of computing power. In addition, Anthropic has entered into agreements with SpaceX, owned by Elon Musk, which will provide up to $120.5 billion in compute through 2029.

The compute resources provided by SpaceX are powered by Nvidia GPUs that the company owns. This partnership is part of a series of deals signed between Anthropic and SpaceX from May to October 2026. By leveraging these partnerships, Anthropic aims to ensure a stable supply of computing power for its operations.

To optimize its use of various cloud providers' resources, Anthropic has developed a proprietary orchestration layer. This intelligent system enables the company to allocate workloads across different chips and cloud services, including AWS Trainium, Google TPUs, Nvidia GPUs, and AMD GPUs. The development of this tool required significant investment over several years.

The relationships between Anthropic and its cloud service providers are multifaceted and complex. As competitors in the AI market, Amazon, Google, and Microsoft may prioritize their own compute needs over Anthropic's requirements. Furthermore, these companies could gain valuable insights into Anthropic's business operations and computing demands, which might inform their competitive strategies.

As a result of these interconnected relationships, Anthropic faces potential risks to its ability to access sufficient compute resources. Its suppliers are also customers of the company's products, using its models in their own AI applications. This creates additional layers of complexity, as Microsoft, Amazon, and Google have made significant investments in Anthropic and may continue to do so in the future.

Anthropic's ambitious compute strategy, dubbed Anthropic Direct, aims to reduce its dependence on competitors by setting up its own data centers. This move is expected to yield long-term economic advantages and represent a growing share of the company's compute investments over time.

The company has already begun making significant investments in this new initiative, starting around September 30, 2026. Anthropic has entered into purchase commitments and lease agreements with third-party partners who will secure real estate, power, and facilities for the data centers. These partners will manage the data centers on an ongoing basis, while Anthropic leases the compute it needs from them.

The financial implications of this approach are substantial, with Anthropic committing to rent payments of $125.2 billion over a five-year lease period, excluding interest. This represents a significant upfront cost for the company, which may not see a quick return on investment.

Broadcom is Anthropic's largest infrastructure partner in 2026, with potential financing commitments totaling $42 billion. Google and Amazon follow closely behind, with commitments of $20 billion and $15 billion respectively. The news has already had an impact on Broadcom's stock price, which rose by 3% today.

However, the benefits of Anthropic Direct come with significant risks, including substantial cash outflows that could negatively affect the company's liquidity, financial condition, and results of operations. As a result, Anthropic expects to incur significant costs in advance without immediate returns on investment.

The company also faces challenges related to powering its data centers, which are expected to have "substantial energy demands". To address this issue, Anthropic has signed power generation and infrastructure deals, although the specifics of these agreements remain undisclosed. The biggest risk is connecting the power supply to the data center, which could be delayed due to various factors such as permitting, legal challenges, or supply-chain disruptions.

Anthropic's ambitious plans to spend up to $567 billion on compute infrastructure face numerous risks beyond just connecting power supplies to its data centers. The company must also contend with potential shortages in essential components such as chips and data center equipment.

The IPO prospectus highlights the significant challenges that Anthropic will need to overcome, warning that delays or cost overruns in data center development could severely impact the business.