Grok 4.8

Question

Grok 4.8

Accepted Answer

As of September 18, 2026, **Grok 4.8 has not been released.**

Here is the current status of the model based on available information:

*   **Public Status:** The model is currently unreleased and has no official xAI model card, API identifier, pricing, or benchmark data.
*   **Origin of Information:** The existence of Grok 4.8 was revealed by Elon Musk in a post on X (formerly Twitter) on September 13, 2026.
*   **Technical Specifications:** According to Musk, Grok 4.8 is a 2.5-trillion-parameter model trained using a new C++ software stack. 
*   **Development Stage:** At the time of the announcement, the model was reportedly nearing the end of its initial training phase, with plans to transition into reinforcement learning (RL) afterward. Historically, xAI's process from the completion of initial training to a public release has typically taken several weeks.
*   **Current Flagship Model:** As of mid-September 2026, the most recent publicly released model from xAI is **Grok 4.6**, which was launched on August 12, 2026. Note that Grok 4.7, which was discussed prior to the mention of 4.8, has also not yet been officially released.