Grok 4.6 and 4.7: xAI's back-to-back model releases explained
As seen on the 24/7 Wall St. homepage on July 28, 2026.
Musk signaled a rapid deployment cycle for xAI's Grok models, with the 2.1T parameter version arriving weeks after the initial August release.
Interesting. Grok 4.6 releases around August 7. This will be the 1.5T model with significantly improved SFT & RL. Grok 4.7 will be the 2.1T model released a few weeks later. This will be better than 4.6 in every way, except slightly slower to serve, albeit with even better https://t.co/dJjXVnFwoA
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Elon Musk posted on July 28 that Grok 4.6, a 1.5 trillion-parameter model, is set to release around August 7. He described it as featuring significantly improved supervised fine-tuning and reinforcement learning compared to its predecessor, signaling a meaningful step up in capability rather than an incremental patch.
Hot on its heels, Grok 4.7 is slated to arrive a few weeks after that. At 2.1 trillion parameters, Musk said it will be better than 4.6 in every way, with one trade-off: it will be slightly slower to serve, a common cost of scaling model size.
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The compressed timeline between the two releases points to a rapid deployment cycle at xAI. The jump from 1.5T to 2.1T parameters in a matter of weeks, if it holds, would represent an unusually aggressive pace of public model rollout.