Anthropic to Use xAI Colossus Compute Cluster for Claude Models

Anthropic will begin using a major compute cluster operated by xAI to power its Claude artificial intelligence models, the company announced at a developer conference. The move provides Anthropic with over 300 megawatts of additional capacity that it will deploy from the Colossus 1 data center.

The company said it is literally using all the compute capacity available at the facility. As a direct result, Anthropic is increasing rate limits across the board for its API service and paid subscription plans. The changes apply immediately to Claude Opus models.

Anthropic had been operating under significant compute limitations and actively sought additional resources. The new arrangement with the xAI cluster addresses that bottleneck, according to statements made onstage at the Claude Code developer conference.

The partnership also involves SpaceX. Details of the compute agreement between the two companies were shared during the same event. The company attributed the expansion directly to access to the new compute resources. The announcement comes as demand for advanced AI capabilities continues to grow across industries.

No specific numerical rate limits were detailed in initial reports beyond confirmation of broad increases.

The decision reflects shifting market conditions in the region. These developments illustrate ongoing realignments in both technology infrastructure and international trade relationships.