Elon Musk made two pointed statements about xAI's Grok on August 15 that are worth unpacking. In back-to-back posts on X, he recommended Grok 4.6 for speed and cost, then went further — saying Grok 4.7 'has a good chance of exceeding all current models in intelligence.' Here's what we know and what it means.
What did Musk actually say about Grok 4.6?
Replying to @TheChiefNerd, Musk acknowledged that a competing model — he referred to it as 'Fable 5' — is 'smarter overall,' but positioned Grok 4.6 as the practical choice: 'much faster and lower cost.' That's a meaningful concession on raw intelligence paired with a clear value argument. For users who run high-volume queries or are watching API costs, speed and price-per-token often matter more than marginal benchmark differences.
How big is the 'improved massively' claim?
Musk's second post was brief but came with a video attachment, suggesting the improvement is demonstrable rather than just asserted. Without independent benchmarks in hand, the claim can't be fully verified — but Musk's framing is notable because he simultaneously admitted a competitor leads on overall intelligence. 'Improved massively' in this context likely refers to the trajectory from earlier Grok versions, not a claim of current top-of-class status.
What is Grok 4.7, and when does it arrive?
Musk didn't give a release date for Grok 4.7. What he did say is that it 'has a good chance of exceeding all current models in intelligence' — careful wording that stops short of a guarantee but sets a high bar publicly. The phrase 'all current models' would include frontier models from OpenAI, Google, and Anthropic. Whether that claim holds up will depend on third-party evaluations once 4.7 ships.
Should Tesla owners care about Grok specifically?
Yes, for a few reasons. Grok is integrated into the Tesla vehicle experience through the xAI partnership — it powers the in-car AI assistant on supported vehicles. A faster, more capable Grok directly translates to better voice and query responses inside your Tesla. Improvements to the underlying model roll out to the car over software updates, so advances at the model level eventually reach the dashboard.
Is Grok 4.6 worth switching to right now?
If you're already using a competing AI assistant and your primary concern is response speed or cost — particularly for API access — Musk's framing suggests Grok 4.6 is competitive. If raw intelligence benchmarks are your deciding factor, he's transparent that at least one competitor currently leads on that metric. The honest answer is: try it. Grok is available at grok.com and through the X app, and the gap Musk describes between 4.6 and 4.7 suggests the smarter version isn't far off.
Sources & reporting notes
The links below identify the material source records used for this report.
- @elonmusk on X (2026-08-15T21:12:54.000Z) — Direct source
- @elonmusk on X (2026-08-15T21:14:31.000Z) — Direct source
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