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Elon Musk
@elonmusk · Jul 18, 2026
Easy predictions
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Brivael Le Pogam
@brivael · Jul 17, 2026
Je pense qu'on verra ça comme le pic du globalisme décadent dans les livres d'histoire.
Brivael Le Pogam@brivael· Jul 17, 2026Les globalistes sont des communistes, ils détestent le beau, c’est structurel.
Elon Musk
@elonmusk · Jul 18, 2026
When a country has talent like Alizée and instead shows the world middle-aged men in makeup 🤦♂️
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Yun-Ta Tsai
@yunta_tsai · Jul 18, 2026
My favorite system prompt at Grok Build: Do a) …, b) …, c) …. After finishing, please double-check the correctness and DM the visualization of sample outputs.
Then walk away.
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Max
@MdeZegher · Jul 17, 2026
The beginning of the Megacharger network
Build-out is focused on the most important Semi routes and depots first. Follow our progress here:
For Semi customers who can install Megachargers or Basechargers at their depots, we recommend installing their own
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Tesla North America
@tesla_na · Jul 18, 2026
Tesla Diner is turning 1 on July 21st, so we're throwing a party
Come swing by for a day full of fun:
– Cybercab on display
– Birthday menu
– @Tesla_Optimus
– Face painting for kids & adults
– Photo booth
– Servers on roller skates delivering your order
– Light show
– Skypad DJ
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Rothmus 🏴
@Rothmus · Jul 17, 2026
On this day in 1918 the Bolsheviks herded Tsar Nicholas II, Empress Alexandra, and their five children into a basement in Yekaterinburg and opened fire.
The bullets bounced because the girls had diamonds sewn into their corsets. So the reds finished the job with bayonets,
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Elon Musk
@elonmusk · Jul 18, 2026
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David Sacks
@DavidSacks · Jul 18, 2026
This is *exactly* what I predicted would happen. I said Chinese models would have advanced cyber capabilities within a matter of months and the only thing to do about it was to use AI-powered cyberdefense to protect our systems. Trying to gatekeep models doesn’t work.
Sebastian Mallaby@scmallaby· Jul 17, 2026I get it. But Kimi K3 also tells us that Mythos-level cyber capability is going to be freely downloadable soon. So we will go from a world in which almost nobody was getting Mythos to a world in which everyone gets it. @davidsacks, what's your story on how we address this?
Elon Musk
@elonmusk · Jul 18, 2026
True
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Whole Mars Catalog
@wholemars · Jul 18, 2026
One thing that really frustrates me is when Tesla Self-Driving exits the carpool lane or express lane and then gets stuck in traffic.
As I see everyone else whizzing by in the far left lane, I get extremely annoyed knowing I should be there too.
Respect the settings please 🙏
Elon Musk
@elonmusk · Jul 18, 2026
The car will start to remember your specific interventions and match each person’s individual preferences
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Elon Musk
@elonmusk · Jul 18, 2026
Replying to @Vvikramai
I thought this was generate by AI at first
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World of Engineering
@engineers_feed · Jul 17, 2026
7 equations every engineer should understand, not just know:
1. F = ma (Newton's Second Law)
Force = mass × acceleration.
Everything that moves or is prevented from moving obeys this. Every structural load, every vehicle dynamics problem, every rocket trajectory.
2. σ = F/A
Elon Musk
@elonmusk · Jul 18, 2026
Kinetic energy being equal to half mass times velocity squared (the general case of the relativity equation) is an insanely big deal in everyday life.
That and the surface to volume ratio explain so much about our reality!
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Elon Musk
@elonmusk · Jul 18, 2026
Try Grok 4.5
Penny2x@imPenny2x· Jul 18, 2026I’m running Fable, K3, 5.6 and 4.5 like 10 hours a day and they are all sick. At work, at home. I have subscriptions for many of them at both locations. But you know which model legit doesn’t get enough hype?
GROK.
I’m so serious. Even on 𝕏 it doesn’t get enough hype cause we
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The Babylon Bee
@TheBabylonBee · Jul 17, 2026
Elon Musk
@elonmusk · Jul 18, 2026
😂
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Arthur MacWaters
@ArthurMacwaters · Jul 17, 2026
I have yet to find an example where wearing a short-sleeved white button-up shirt and tie did not imply absolutely PEAK performance
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The Babylon Bee
@TheBabylonBee · Jul 17, 2026
Elon Musk
@elonmusk · Jul 18, 2026
😂
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S.E. Robinson, Jr.
@SERobinsonJr · Jul 17, 2026
Yesterday I attended the Tesla Lithium Day 2026 event at the Robstown, Texas, Lithium Refinery. The facility is now complete and fully rammped! Materials are being shipped to Giga Texas for 4680 production.
Elon Musk
@elonmusk · Jul 18, 2026
Cool
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Aaron Burnett
@aaronburnett · Jul 18, 2026
I can confirm this. I’ve doubled my annual miles “driven” because my robot drives me 99% of the time.
Robert Scoble@Scobleizer· Jul 17, 2026My robot is driving me to a robot company in San Francisco.
Life is good! Hope you have a great weekend.
One thing about having a robot to drive you: you will drive more.
I wouldn’t drive the three hour round trip from my house in San Jose nearly as often if I had to manually
Elon Musk
@elonmusk · Jul 18, 2026
Traffic will get much worse with robot cars, because the pain of driving yourself is not there anymore!
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Ara
@arafatkatze · Jul 17, 2026
I gave xAI a lot of shit for Grok Build’s repo-upload behavior, so they deserve the same volume when they fix it.
I pulled the new signed release, planted fake secrets, and captured its HTTPS traffic with MITM proxies. The fix held as retention was off on first login and had no
Ara@arafatkatze· Jul 14, 2026Grok Build is straight up malware behavior with an Apple notarized signature.
You could explicitly deny the agent permission to read a file and it would upload that exact file anyway, because a separate code path silently packed your entire repo, full Git history included, and
Elon Musk
@elonmusk · Jul 18, 2026
❤️
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Min Choi
@minchoi · Jul 17, 2026
Grok 4.5 is only 1.5T parameters.
Kimi K3 is 2.8T... and costs 3× more per task.
SpaceXAI cracked intelligence efficiency.
Now imagine Grok at 3T.
Elon Musk@elonmusk· Jul 17, 2026Grok 4.5 is arguably #1 when taking speed and cost into account
Elon Musk
@elonmusk · Jul 18, 2026
Our 2T model, which is better than our 1.5T in every way, will finish initial training next week. It might be able to exceed Kimi, but with speed and token efficiency close to our 1.5T (aka Grok 4.5).
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Wilfred Reilly
@wil_da_beast630 · Jul 18, 2026
Correct.
Why would I ever pay to keep an enemy alive?
Killing murderers and such is good.
Thumperella 5x5@sheshelynnie· Jul 18, 2026@wil_da_beast630 No, it's not "enough for me".
Keeping him alive in prison means another parasite sucking the blood that is tax money to keep him fed, medical needs tended, housed, guarded and piped in cable TV. 🙄
Those type of things should be reserved solely for those with possible
Elon Musk
@elonmusk · Jul 18, 2026
💯
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