Musk Reveals Grok 4.6/4.7 Release Timeline and Parameter Sizes
Elon Musk recently disclosed the release timeline and parameter sizes for xAI's next-generation large models. He stated that Grok 4.6 is expected around August 7 with 1.5T parameters and significant improvements in SFT and RL, followed by Grok 4.7 with 2.1T parameters a few weeks later. This sets a clear pace for xAI's near-term model iterations.
Confirmed
- Release timeline and sizes: Musk indicated Grok 4.6 around August 7 with 1.5T parameters, and Grok 4.7 with 2.1T parameters a few weeks later.
- Technical improvements: Grok 4.6 will see notable enhancements in SFT and RL, and Grok 4.7 will be better across all metrics. Musk hinted that Grok 4.6 is a major upgrade.
- Current model performance: According to @arena and @kevinnbass, Grok 4.5 has reached 13th on Agent Arena and scored 56.9% on LaurenBench, surpassing Claude Sonnet.
Unconfirmed
- Musk's comments came in a reply about SuperGrok subscription usage in Cursor; no official technical report or detailed architecture specs for the 1.5T and 2.1T sizes have been released.
Why it matters
- The clear timeline and massive parameter sizes (exceeding 2T) demonstrate xAI's accelerating competition in the large model space, potentially pushing the capability ceiling of AI foundation models.
2026-07-28 ~ 2026-07-30 · 10 related posts
- Episode 1: Musk Announces Release Timeline for Grok 4.6 and 4.7(2026-07-24, 10 posts)
- Episode 2: Musk Reveals Grok 4.6/4.7 Release Timeline and Parameter Sizes(2026-07-28, 10 posts)
- Episode 3: xAI's Grok 4.6 Set to Launch Next Week(2026-07-31, 2 posts)
- Episode 4: Musk Reveals Grok Roadmap: Version 4.6 Incoming with 1.5T Parameters(2026-08-05, 4 posts)
- Episode 5: Musk Confirms Grok 4.6 Release This Week Amid xAI Cursor Acquisition Talks(2026-08-12, 3 posts)
- Episode 6: Musk: Grok 4.7 Ready in 3–4 Weeks, Trained with SpaceX Data(2026-08-13, 9 posts)
Primary sources
- [source] Musk says Grok 4.6 lands around Aug. 7, with 1.5T parameters and a bigger 4.7 coming soon — elonmusk · 2026-07-28
- Rumor says xAI’s Grok 4.6 lands Aug. 7 with a 1.5T model, followed by 2.1T Grok 4.7 — daniel_mac8 · 2026-07-28
- Leak says Grok 4.6 will be a 1.5T model, followed by a 2.1T Grok 4.7 — mark_k · 2026-07-29
- [source] Grok 4.6 lands August 7 as Grok 4.5 climbs to #13 on Agent Arena — arena · 2026-07-29
- [source] Elon Musk Hints Grok 4.6 Will Be a Significant Improvement — elonmusk · 2026-07-30
- Elon Musk Confirms Grok 4.6 Release Within a Week — kevinnbass · 2026-07-30
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