xAI brings 500k-GPU Colossus 2 cluster online

2026-08-02

xAI announced Colossus 2 is fully operational at roughly 500,000 GPUs, claiming the largest single training cluster to date and signaling a next-generation Grok trained on it before year end.

Significance 2: Large compute signal but no released capability yet; log for context.

Infra / compute Lab strategy

Sources

primary xAI announcement retrieved 2026-08-02

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