# Elon Musk’s Grok Roadmap: Why xAI Backs Dario Amodei’s Push for an AI Slowdown > Source: > Published: 2026-09-15 09:00:00+00:00 Elon Musk’s Grok Roadmap: Why xAI Backs Dario Amodei’s Push for an AI Slowdown Elon Musk, CEO of SpaceXAI, shared updates on his company's Grok AI model via X, stating that Grok 4.8's training would complete this week, Grok 4.9 would be 'Astra/Fable class,' and Grok 5 would achieve AGI. AsiaAI Publisher · September 15, 2026 · 2 min read · Source: ITmedia AI+ · Issue #97 East Asian Technology Intelligence Japan & China tech news — translated, contextualized, and delivered for Western readers. Free. Unsubscribe anytime. This story ran in Issue #97, alongside three other stories. AI & Machine Learning Elon Musk, CEO of SpaceXAI, shared updates on his company’s Grok AI model via X, stating that Grok 4.8’s training would complete this week, Grok 4.9 would be ‘Astra/Fable class,’ and Grok 5 would achieve AGI. Concurrently, Musk endorsed Anthropic CEO Dario Amodei’s argument for an AI development slowdown, despite opposition from figures like former US President Donald Trump. This news provides a rare glimpse into the competitive claims and development timelines of a prominent Western AI frontier model from a Japanese perspective. It also highlights a growing divide among AI industry leaders and political figures regarding the pace of AI development and regulation, a debate that has significant implications for global tech policy and investment.