Grok 4 was one of the most expensive ai models to train by one estimate – Breaking News & Latest Updates 2026
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Elissa Welle
Grok 4 was one of the most expensive AI models to train, by one estimate.

It cost xAI around $490 million, according to a report by AI research institute Epoch AI, which is more than nine times the estimated cost of training Meta’s Llama 3.

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