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Grok 4.6: From Accidental Leak to Official Release

Grok 4.6 was briefly spotted in Cursor before its official release by xAI on the same day, immediately sparking a wave of hands-on testing across major AI coding tools.

2026-08-11 ~ 2026-08-11 · 2 episodes · 9 posts

Episode 1 · Grok 4.6 briefly surfaces in Cursor before rollback, no official xAI announcement yet (2026-08-11, 6 posts)

On August 11, multiple users spotted xAI's Grok 4.6 model briefly appearing in the Cursor editor before it was swiftly taken down. Currently, the version only exists as an unclickable option in Cursor's model selector, and xAI has yet to release any related model cards, API lists, or pricing information. Given that Grok 4.5 was released less than a month ago, this incident has drawn widespread attention to xAI's rapid iteration pace.

Confirmed

  • The text "Grok 4.6" did briefly appear in Cursor's model selector on August 11.
  • The model was subsequently rolled back in Cursor and is now just an unclickable option.

Unconfirmed

  • Whether the model is fully developed and ready for release. According to an investigation by @eyishazyerer, no official substantive information regarding Grok 4.6 can be found, and previously circulated specs like the 1M context window lack official backing.
  • It remains undecided whether this appearance was an accidental premature deployment by Cursor or a limited test by xAI.

Why it matters

  • If Grok 4.6 is indeed launched in the coming weeks, it means xAI has completed a new version iteration in under a month, signaling a massive acceleration in their R&D progress.
  • The developer community has highly praised the capabilities and efficiency of Grok 4.5, and the market holds strong expectations for the new version's performance.

Episode 2 · Grok 4.6 Released and Tested Across Major Coding Tools (2026-08-11, 3 posts)

xAI released the Grok 4.6 model, prompting developers to test its performance across major AI coding tools. Reviews highlight that Zed lacks key features like planning mode, while T3 Code offers the best experience for specific user needs.