Anthropic and Elon Musk’s xAI have struck a compute-sharing agreement giving Anthropic access to Colossus, xAI’s massive AI supercomputer in Memphis, Tennessee, in an unusual pairing of two rivals in the artificial intelligence race. The deal, announced this week, is aimed at relieving persistent capacity constraints that have frustrated Claude Pro and Max subscribers for months.
A Fix for Claude’s Throttling Woes
The partnership arrives at a critical moment for Anthropic. Since early 2026, Claude users — particularly developers relying on Claude Code — have reported aggressive rate limiting, with some Max subscribers seeing their usage meters spike from under 50% to 100% on single prompts. Anthropic acknowledged in March that “people are hitting usage limits in Claude Code way faster than expected,” calling it a top priority.
The company plans to use xAI’s additional compute to “directly improve capacity for Claude Pro and Claude Max subscribers,” according to the announcement. The move supplements Anthropic’s existing infrastructure deals, including a $100 billion, decade-long commitment to Amazon Web Services announced in April and a multi-gigawatt agreement with Google and Broadcom for next-generation TPU capacity.
Strange Bedfellows in the GPU Race
The deal gives xAI — now a subsidiary of SpaceX following its acquisition in February 2026 — a high-profile customer for infrastructure it has already built. Colossus reached 200,000 GPUs by late 2025, incorporating a mix of Nvidia H100, H200, and Blackwell-generation GB200 accelerators. The facility expanded to nearly 2 gigawatts of total capacity in January 2026 after xAI purchased a third building near its Memphis site.
Anthropic has also expressed interest in collaborating with xAI on orbital AI compute capacity, a concept Musk has championed since announcing SpaceX’s xAI acquisition with the stated goal of building space-based data centers powered by solar energy. However, experts expect large-scale orbital compute remains years away, with meaningful deployments unlikely before the 2030s.
Anthropic’s Compute Hunger
The xAI deal underscores Anthropic’s voracious appetite for computing power as demand for Claude surges. The company has now secured infrastructure partnerships with Amazon, Google, Broadcom, and xAI in rapid succession. The surging demand traces partly to an influx of users following OpenAI’s controversies and the release of more capable Claude models with larger context windows, which consume substantially more compute per query.
