Elon Musk's new Grok 4 model scores highest on intelligence benchmarks and receives praise from AI experts, but faces serious adoption challenges after the previous Grok 3 model went offline for spouting antisemitic content. Despite being technically superior, businesses are unlikely to use Grok's API due to lack of transparency and reliability concerns, choosing safer options like ChatGPT or Claude instead. XAI also launched a $300 monthly "Super Grok Heavy" subscription, significantly higher than competitors' $200 tiers, though even AI professionals question whether such expensive plans provide meaningful value over $20 monthly subscriptions.