Elon Musk announced on September 14, 2026, that the upcoming Grok 5 model from xAI is expected to achieve artificial general intelligence. This milestone follows the development of Grok 4.8, a 2.5-trillion-parameter model built on a new C++ software stack, which is currently completing its training phase.
The company outlined a performance roadmap for its models. Grok 4.7 is currently comparable to Anthropic’s Opus 5.0, while Grok 4.8 is expected to provide significant improvements. Subsequent iterations, specifically Grok 4.9, are projected to reach performance levels similar to Astra or Fable-class systems.
xAI leverages massive compute clusters and data from X and SpaceX to accelerate its development cycle. Despite these advancements, Musk simultaneously supported calls from Anthropic’s Dario Amodei to slow down the pace of AI development due to potential risks associated with rapid capability jumps.
The development of AGI remains a subject of intense debate regarding its impact on global economic output, scientific research, and robotics. Concerns persist regarding model alignment, potential job displacement, and the concentration of power within a small number of technology firms.
