ME News message: On April 18 (UTC+8), according to Beating Monitoring by Dongcha, Grok 4.3 (beta) has been opened to users who subscribed to the highest tier SuperGrok Heavy. On the 17th, users saw this version in the dropdown menu on Grok.com marked with “Early Access.” In the morning of the 18th, X user Mark Kretschmann posted that this version has 1T parameters, with a size twice that of Grok 4.20, and with significantly longer training time as well. xAI and Tesla CEO Elon Musk later corrected this in the same tweet, stating that the current 4.3 (beta) is still a 0.5T model, merely an updated training checkpoint, not the 1T new model speculated by the outside world.

MeNews

2026-05-26 17:30:54

ME News, April 18 (UTC+8): According to Beating Monitoring by Dongcha, Grok 4.3 (beta) has been opened to users subscribed to the highest tier, SuperGrok Heavy. On the 17th, users had already seen this version marked with an “Early Access” tag in the dropdown menu on Grok.com. In the morning of the 18th, X user Mark Kretschmann posted that this version has a 1T parameter count, its scale is twice that of Grok 4.20, and its training time is also significantly longer. xAI and Tesla CEO Elon Musk (Elon Musk) then corrected this in the same tweet, stating that the current 4.3 (beta) is still a 0.5T model; it is simply an updated training checkpoint, not the 1T new model speculated by outsiders. Musk also revealed that the real 1T flagship is about 5 days away from initial training being completed. He described that the 1T model will deliver a step-change improvement in coding, long context, and various skills, and said the SpaceXAI model factory has already been operational; after that, an improved base model is expected to be released every two weeks. (Source: BlockBeats)

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GateUser-2100b43b

· 5h ago

This rhythm of xAI feels similar to Tesla's FSD.

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BudgetValidator

· 5h ago

Elon Musk personally steps in to debunk the rumors; this plot twist came a bit quickly.

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RugpullTaster

· 5h ago

1T shrinks to 0.5T, the reduction is comparable to some project teams.

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GateUser-4cc35c5c

· 5h ago

The parameter enthusiasts are furious, and Baiji is excited again.

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TreatMemesAsBeliefs

· 5h ago

Training checkpoint updated, got it, that's DLC.

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PlayfulAndCheerfulSunflower

· 5h ago

SuperGrok Heavy, that name sounds expensive.

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TheHiddenRisksBehindApy

· 5h ago

0.5T or 1T actually doesn't matter; being able to use it earlier is what really counts.

View OriginalReply0

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Elon Musk: Grok4.3 beta is still the intermediate version trained with 0.5T, the 1T flagship is 5 days away from completing the initial training.

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