Categories Diddy and October Surprise 2024 xAI Launches Grok 4 with “Heavy” Variant, Outperforming … Post author By Mike Nova Post date July 10, 2025 Elon Musk’s xAI launched its powerful new AI model, Grok 4, on Wednesday, aiming to challenge rivals like OpenAI and Google. The release includes a new $300 monthly subscription plan. However …