<ul data-eligibleForWebStory="false">xAI launches Grok 4 & Grok 4 Heavy AI models, offering SuperGrok subscription.Grok 4 competes with top AI models, scoring well on humanity benchmark test.Despite technical success, xAI faces criticism over Grok's recent antisemitism controversy.The launch showcases xAI's commitment to AI research & enterprise development.Stay tuned for potential advancements in AI with xAI's new subscription tiers.