Anthropic Teams Up With xAI for Colossus Supercomputer Access
Anthropic has partnered with Elon Musk’s xAI to access Colossus, a massive AI supercomputer located in Memphis, Tennessee. As a result, Anthropic expects to reduce the capacity problems that have frustrated Claude Pro and Max subscribers for months.
Since early 2026, many Claude users — especially developers using Claude Code — have complained about strict rate limits. In several cases, Max subscribers reported that usage meters jumped from below 50% to 100% after a single prompt. Anthropic acknowledged the issue in March, stating that “people are hitting usage limits in Claude Code way faster than expected,” and the company described the problem as a major priority.
Now, Anthropic plans to use xAI’s computing resources to improve service capacity directly for Claude Pro and Claude Max subscribers. Additionally, the agreement strengthens Anthropic’s broader infrastructure strategy. Earlier this year, the company secured a decade-long cloud partnership worth $100 billion and also expanded its next-generation TPU agreements with major hardware partners.
Rivals Join Forces in the AI Infrastructure Race
Although Anthropic and xAI compete in artificial intelligence, the partnership benefits both companies. xAI gains a major customer for infrastructure it already built, while Anthropic receives urgently needed compute power.
By late 2025, Colossus had grown to 200,000 GPUs, including Nvidia H100, H200, and Blackwell-generation GB200 accelerators. Furthermore, the facility expanded to nearly 2 gigawatts of capacity in January 2026 after xAI acquired an additional building near the Memphis campus.
At the same time, Anthropic has shown interest in working with xAI on orbital AI computing systems. Musk has promoted the idea since SpaceX acquired xAI earlier this year, arguing that future space-based data centers powered by solar energy could transform AI infrastructure. However, industry experts believe large-scale orbital compute systems remain years away, and they do not expect meaningful deployments before the 2030s.
Growing Demand Fuels Anthropic’s Compute Expansion
The new agreement highlights Anthropic’s growing demand for computing power as Claude adoption continues to rise. Over recent months, the company has rapidly expanded partnerships across the AI infrastructure sector to secure more capacity.
Demand has increased partly because more users shifted toward Claude following controversies surrounding competing AI platforms. Meanwhile, newer Claude models introduced larger context windows and stronger reasoning capabilities. Consequently, each query now requires significantly more compute resources, which has intensified pressure on Anthropic’s infrastructure.
