While Anthropic will use the Colossus 1 data center, which has a really bad environmental record, xAI retains the larger Colossus 2 for its own AI training (Simon Willison/Simon Willison's Weblog)

Anthropic has chosen to utilize the Colossus 1 data center, despite its poor environmental reputation, while xAI has opted for the larger Colossus 2 for its AI training needs. This decision highlights the ongoing challenges tech companies face regarding sustainability in their infrastructure choices. The recent Code w/ Claude event did not yield significant announcements from Anthropic, making this choice particularly noteworthy.