As of: 2026-10-12 22:30 CEST.
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Canonical page: https://postcutoff.com/p/x-elonmusk-2031751255060885911/

# Elon Musk unveils Macrohard / Digital Optimus, a joint xAI-Tesla computer-use agent

Elon Musk (@elonmusk), X, 2026-03-11. Importance: major (4 of 5).
Source: https://x.com/elonmusk/status/2031751255060885911

## Why it matters

Only primary source for the Macrohard / Digital Optimus project (about 47.9M views).

## Summary

Musk announces the joint xAI-Tesla project: Grok plans, a real-time Tesla model acts on the past 5 seconds of screen video and keyboard/mouse input, running on the $650 Tesla AI4 computer.

_Metrics read 2026-10-12 via api.fxtwitter.com: 47,894,265 views, 76,154 likes._

## Archived text

> Macrohard or Digital Optimus is a joint xAI-Tesla project, coming as part of Tesla’s investment agreement with xAI.
>
> Grok is the master conductor/navigator with deep understanding of the world to direct digital Optimus, which is processing and actioning the past 5 secs of real-time computer screen video and keyboard/mouse actions. Grok is like a much more advanced and sophisticated version of turn-by-turn navigation software.
>
> You can think of it as Digital Optimus AI being System 1 (instinctive part of the mind) and Grok being System 2. (thinking part of the mind).
>
> This will run very competitively on the super low cost Tesla AI4 ($650) paired with relatively frugal use of the much more expensive xAI Nvidia hardware. And it will be the only real-time smart AI system. This is a big deal.
>
> In principle, it is capable of emulating the function of entire companies. That is why the program is called MACROHARD, a funny reference to Microsoft.
>
> No other company can yet do this.


## Cited in

- 2026-03-11: [Musk unveils 'Macrohard' / Digital Optimus, a joint Tesla–xAI computer-use agent with Grok as planner and a real-time Tesla model acting on screen video](https://postcutoff.com/e/2026-03-11-macrohard-digital-optimus-tesla-xai/)