Here's what's on our plate today:

• 🧪 The $60B gatekeeper deal: SpaceX rents Anthropic its GPUs and now owns Cursor.

• 📰 NVIDIA's Perplexity check, a 27B model beats the frontier, AI server prices climb.

• 💬 Prompt of the Day: find where one vendor owns three parts of your stack.

Let’s dive in. No floaties needed.

The Laboratory

TL;DR

Anthropic rents its kitchen from SpaceX, and the landlord just bought the marketplace out front.

• The lease: Anthropic took all of Colossus 1, over 220k GPUs, at a reported $1.25B a month, on terms either side can end with 90 days' notice.

• The purchase: on August 14, SpaceX closed its $60B buyout of Cursor's parent, taking the tool where developers pick which model to use.

• Choice, priced: Cursor's pricing includes more usage of its own models, while third-party models bill at API rates plus a possible token charge.

• No villain required: the facts show changed incentives, not a decision to shut Claude out. Influence lands in billing rules before it lands in announcements.

• Stakes: enterprise teams that chose Cursor to keep their model options open now answer to the company that supplies, competes with, and distributes those models.

The $60B deal that turned Anthropic’s landlord into its gatekeeper

Imagine a restaurant that rents its kitchen from the business next door. The restaurant develops its own menu, employs its own staff, and builds a following, while the ovens, refrigerators, and workspace belong to a rival. Customers also find it through a food marketplace where they can compare several restaurants before deciding where to eat.

For a time, that arrangement can suit everyone involved. The kitchen owner earns rent from equipment that would otherwise sit unused, the marketplace earns fees from each order, and the restaurant reaches customers it might otherwise struggle to find on its own. The terms become more consequential when the kitchen owner acquires the marketplace, since one company then controls the equipment that makes the food possible and a central route through which diners select it.

The relationship between SpaceX, Anthropic, and Cursor developed in that order. It began with a data center that SpaceX needed to put to work, continued with a lease that made Anthropic dependent on its rival’s machines, and reached the developer’s desk when SpaceX completed its purchase of Cursor.

A data center looking for work

In 2024, xAI built Colossus near Memphis to train Grok, its answer to Claude and ChatGPT. The project reflected the contest among leading AI companies, where a model’s capabilities depend on access to vast numbers of graphics processing units, or GPUs, the specialized chips used to train and run AI systems. Colossus was designed to give Grok enough computing capacity to compete with the leading models on their own terms.

When SpaceX absorbed xAI, it inherited the data centers and the financial problem attached to them. The chips carried costs whether they were fully occupied or underused, while SpaceX’s own AI products could not consume all the capacity available in and around Memphis. The company began leasing computing power to AI labs, turning infrastructure built for Grok into revenue from the companies whose models Grok was meant to challenge.

Anthropic took the largest share because its demand for computing power had outgrown its available infrastructure. In May, it agreed to use all of Colossus 1, gaining more than 300 megawatts of capacity and over 220k GPUs. Anthropic said the added capacity would allow it to raise usage limits for Claude Code and the Claude API, the service through which other software sends requests to Claude, connecting the lease directly to the experience of paying customers.

The immediate relief came with a longer-term exposure. TechCrunch reported that Anthropic will pay $1.25B a month for Colossus 1 and that either company can end the deal on 90 days’ notice. The broader duration remains unclear because Musk has described the agreement as a 180-day lease, while SpaceX’s public filing described payments through May 2029, a conflict documented by TechCrunch. Anthropic has already built the capacity into its plans for serving Claude’s users, which means that a dispute over a contract term could eventually constrain the service itself.

The lease reached the developer’s desk

The Colossus agreement made SpaceX important to Anthropic’s ability to run Claude. On August 14, SpaceX closed its $60B acquisition of Anysphere, Cursor’s parent company, extending that importance to the product where many developers choose which AI model to use.

The transaction developed over several months. In April, SpaceX and Cursor announced a partnership to develop a next-generation coding and knowledge-work AI, together with an option for SpaceX to buy Cursor for $60B. The companies moved forward with an all-stock acquisition in June, and Cursor is now officially part of SpaceX. Cursor said the completed deal gives it access to SpaceX’s large fleet of GPUs, tying its coding product more closely to the infrastructure business that already rents capacity to Anthropic.

Cursor matters because it provides engineering teams with a common place to work across several models. Its enterprise product allows customers to select models from Anthropic, OpenAI, Google, and SpaceXAI, while the company says that 64% of Fortune 500 companies and more than 50k businesses use Cursor. It also says that developers write more than 100M lines of enterprise code through the product each day, giving its owner a role in a large share of the workflow where models become useful or irrelevant.

A coding tool sits closer to the customer than a data center does. Developers need software that fits their codebases, follows company security rules, keeps costs predictable, and can be approved by procurement teams. Cursor provides the workflow, billing, and administration layer that gives SpaceX a role in the decisions that turn a model from an impressive demonstration into a routine part of work.

Model choice now has an owner

Anthropic still builds Claude, and developers can still select it in Cursor. SpaceX, however, now supplies a large share of the capacity that helps Anthropic serve those developers and owns a major product through which they choose whether to use Claude, Grok, or another model. The company has moved from one side of Anthropic’s business to both its supply chain and an important part of its distribution.

Cursor’s appeal has rested partly on its flexibility. An enterprise could standardize on one coding environment and still let teams select different models for different kinds of work, preserving room to adjust as those models improved, changed price, or became better suited to particular tasks. That choice remains visible in Cursor’s current product, where several providers continue to appear side by side.

The practical meaning of choice depends on more than the names listed in a model menu. Cursor’s pricing documentation separates its own models, including Grok and Composer, from third-party models. Its plans provide more included usage for Cursor’s models, while third-party models are billed at their API rates and can include an additional Cursor token charge; enterprise customers can also use a router that selects a model according to their organization’s settings.

These rules can make the product cheaper to run and more useful for customers managing large AI budgets. They also influence which models become easiest to use repeatedly, since developers generally follow the path that receives the most included usage, the fewest billing obstacles, and the clearest support from the tools around them. Cursor still offers access to competing models, while SpaceX now has stronger incentives to decide how that access is priced, presented, and routed.

A balance held together by dependence

The arrangement has reasons to endure. SpaceX needs Anthropic’s payments to generate a return on its data centers; Anthropic needs Colossus capacity to meet demand for Claude, and Cursor needs enough model choice to remain useful to the enterprise customers who adopted it for that reason. Their interests overlap just enough to discourage a sudden break, even as the companies compete across several parts of the AI market.

That overlap creates benefits for customers and companies alike. Leasing keeps costly chips in use, while a multi-model coding tool gives developers access to systems with different strengths. The difficulty emerges when an enterprise buyer tries to preserve an independent model strategy while the infrastructure provider, the model maker, and the software platform overlap under fewer owners.

The restaurant in the opening can remain open, and the marketplace can continue to display its competitors. The restaurant owner may still write the menu and welcome the same diners, while the owner of the kitchen and marketplace gains quiet power over the equipment, the fees, and the path to customers. In AI, that power will emerge through contracts, pricing plans, and product settings long before anyone describes it as a change in the competitive landscape.

Prompt of the Day

Bite-Sized Brains

• NVIDIA's Perplexity check: NVIDIA is in talks to invest in Perplexity at a valuation above $30B, after first weighing a technology licensing deal instead.

• The 27B model that won: London lab Inherent says its Faraday agent beat Claude Opus 4.8 and GPT-5.5 at reproducing published research while running on a 27B-parameter model.

• NVIDIA's server price letter: NVIDIA's biggest customers were told servers with Vera Rubin and Grace Blackwell chips will cost more than 15% extra next year as memory prices soar.

Tuesday Poll

The Toolkit

• Chroma: Open-source vector database for AI apps, quick to set up and easy to scale for RAG.

• Descript: Audio and video editor that lets you cut recordings by editing the transcript like a doc.

• Dust: No-code platform for building AI agents that plug into your company's tools and automate workflows.

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