Free trial of Grok 4.5 model via Grok Build CLI
Try Grok 4.5 for free in Grok Build!
curl -fsSL x.ai/cli/install.sh | bash
Greg Solon retweeted
.@BernieSanders , it is a time to celebrate. @elonmusk has created enormous value for society by building @SpaceX, driving down the cost of rocket launches and creating a global satellite communication network that has brought high speed, low-cost internet and communication access to hundreds of millions and eventually billions of people along with critical advantages for our military and our nation’s defense.
SpaceX and its technologies will cause an acceleration in the growth of wages and wealth creation globally, including in some of the poorest communities in the U.S. and around the world.
Access to low-cost, high speed communications everywhere will allow children around the world to be educated, families to build businesses, and life-saving medical knowledge and care to be available everywhere.
SpaceX will materially bring down the cost of compute, advancing AI and humanity.
Meanwhile, 4,000 SpaceX employees yesterday became millionaires, including hourly wage employees who you claim you are trying to help.
The Elon Musks of the world drive growth, global GDP, and provide access to goods and services at lower cost that would otherwise not exist.
Elon’s nominal trillionaire status is due to his ownership of SpaceX, Tesla, Neuralink, the Boring Company and his other initiatives that have brought new technologies that improve our everyday lives.
Elon is not sitting on a trillion dollar pile of cash, jewelry and gold. He is using his controlling stakes in his companies to advance mankind. Elon’s companies don’t pay dividends. They reinvest all of their capital to accelerate innovation and value creation.
Elon is working 24/7 for all of us. He deserves respect and appreciation, not smears.
Bernie, your socialism would never allow a SpaceX to be built. Socialism has only proven to impoverish mankind and lead to death and destruction.
We need to create the conditions for more SpaceXs to be built, not attack the great entrepreneurs who are helping to advance our country.
Greg Solon retweeted
How To Play Chess on X
1. Post tagging @x_chess_bot + one opponent (X user)
2. Bot asks your opponent to confirm
3. Opponent replies with "yes" or "confirm"
4. Game started! 🤝 Bot posts the starting board
5. White player replies with their move
6. Bot posts an updated board
7. Black player replies with their move
8. ...and so the game continues
Use standard chess notation or natural language. Powered by Grok, both should just work 😎
Games are public X threads - perfect for spectators and fun chess drama 👀
Challenge your friends right now. Tag me + another user to start!
♟️♟️♟️
Greg Solon retweeted
🏁 Game Over! 🙌 White wins by checkmate!
📋 Position: 2k5/2Q5/3B3p/2Kp3P/3P2P1/8/8/8 b - - 6 55
⬜️ White player: @gregsolon
⬛️ Black player: @grok
📜 Game PGN:
[Event "X Chess Bot Game"]
[Site "x.com"]
[Date "2026.05.20"]
[Round "-"]
[White "@gregsolon"]
[Black "@grok"]
[Result "1-0"]
1. e4 e5 2. g3 Nf6 3. c3 Nxe4 4. Qe2 d5 5. Nf3 Nc6 6. d4 exd4 7. cxd4 Bg4 8. Nc3 Bxf3 9. Qxf3 Bb4 10. Bb5 Bxc3+ 11. bxc3 O-O 12. c4 Re8 13. Rb1 Nc3+ 14. Be3 Nxb1 15. Bxc6 bxc6 16. O-O dxc4 17. Rxb1 Qd5 18. Qxd5 cxd5 19. Bf4 Re2 20. Bxc7 Rxa2 21. f4 Rc8 22. Be5 Re2 23. h4 c3 24. Rc1 c2 25. f5 Re1+ 26. Rxe1 c1=Q 27. Rxc1 Rxc1+ 28. Kg2 Rc2+ 29. Kf3 Rc3+ 30. Kg4 f6 31. Bb8 Rc4 32. Bxa7 Rc7 33. Bb6 Rc6 34. Bd8 Rc8 35. Ba5 Rc2 36. Kf3 Rc4 37. Ke3 Rc3+ 38. Bxc3 Kf7 39. g4 h6 40. h5 Ke7 41. Bb4+ Kf7 42. Bd6 Ke8 43. Kd3 Kd7 44. Bf8 g6 45. fxg6 Ke6 46. g7 Kf7 47. Kc3 Kg8 48. Kb4 Kf7 49. Kc5 Ke6 50. g8=Q+ Kd7 51. Qg7+ Kd8 52. Qxf6+ Kc7 53. Bd6+ Kd7 54. Qe7+ Kc8 55. Qc7# 1-0
[v1~2k5/2Q5/3B3p/2Kp3P/3P2P1/8/8/8 b - - 6 55~20848543:gregsolon~1720665183188922368:grok~untimed~~~2026-05-20T17:25:03.271389+00:00~~image~e4,e5,g3,Nf6,c3,Nxe4,Qe2,d5,Nf3,Nc6,d4,exd4,cxd4,Bg4,Nc3,Bxf3,Qxf3,Bb4,Bb5,Bxc3+,bxc3,O-O,c4,Re8,Rb1,Nc3+,Be3,Nxb1,Bxc6,bxc6,O-O,dxc4,Rxb1,Qd5,Qxd5,cxd5,Bf4,Re2,Bxc7,Rxa2,f4,Rc8,Be5,Re2,h4,c3,Rc1,c2,f5,Re1+,Rxe1,c1=Q,Rxc1,Rxc1+,Kg2,Rc2+,Kf3,Rc3+,Kg4,f6,Bb8,Rc4,Bxa7,Rc7,Bb6,Rc6,Bd8,Rc8,Ba5,Rc2,Kf3,Rc4,Ke3,Rc3+,Bxc3,Kf7,g4,h6,h5,Ke7,Bb4+,Kf7,Bd6,Ke8,Kd3,Kd7,Bf8,g6,fxg6,Ke6,g7,Kf7,Kc3,Kg8,Kb4,Kf7,Kc5,Ke6,g8=Q+,Kd7,Qg7+,Kd8,Qxf6+,Kc7,Bd6+,Kd7,Qe7+,Kc8,Qc7#~1~🙌 White wins by checkmate!]
Greg Solon retweeted
That's us! 🌍
The Artemis II crew captured beautiful, high-resolution images of our home planet during their journey to the Moon. As @Astro_Christina put it: "You guys look great."

ALT A full disk image of Earth, as seen from the Orion capsule. The planet is a pale blue, swirling with white clouds and glowing slightly lighter blue in place from reflected light. From about 8 to 9 o'clock, a large brown landmass is Africa, with the Iberian peninsula twinkling with lights just where the planet curves. At the 1 o'clock spot, aurora glow in a thin green glow, just barely separated from the planet's surface. Earth is set against the black of space. Credit: NASA/Reid Wiseman
Greg Solon retweeted
When I was 25, my dream was to live in New York City.
Today, I can’t even imagine living in a city.
I’m deeply grateful to live in a time where you don’t have to be a farmer to make a living in the countryside.
Greg Solon retweeted
Today back in 1965, a GOAT was born 🐐
Wishing a very Happy 60th Birthday to the legendary Andrew Gaze 🎉
Greg Solon retweeted
Introducing Grok 4, the world's most powerful AI model. Watch the livestream now: teapawt.net/i/broadcasts/1lDGLzplW…
Greg Solon retweeted
New 3h31m video on YouTube:
"Deep Dive into LLMs like ChatGPT"
This is a general audience deep dive into the Large Language Model (LLM) AI technology that powers ChatGPT and related products. It is covers the full training stack of how the models are developed, along with mental models of how to think about their "psychology", and how to get the best use them in practical applications.
We cover all the major stages:
1. pretraining: data, tokenization, Transformer neural network I/O and internals, inference, GPT-2 training example, Llama 3.1 base inference examples
2. supervised finetuning: conversations data, "LLM Psychology": hallucinations, tool use, knowledge/working memory, knowledge of self, models need tokens to think, spelling, jagged intelligence
3. reinforcement learning: practice makes perfect, DeepSeek-R1, AlphaGo, RLHF.
I designed this video for the "general audience" track of my videos, which I believe are accessible to most people, even without technical background. It should give you an intuitive understanding of the full training pipeline of LLMs like ChatGPT, with many examples along the way, and maybe some ways of thinking around current capabilities, where we are, and what's coming.
(Also, I have one "Intro to LLMs" video already from ~year ago, but that is just a re-recording of a random talk, so I wanted to loop around and do a lot more comprehensive version of this topic. They can still be combined, as the talk goes a lot deeper into other topics, e.g. LLM OS and LLM Security)
Hope it's fun & useful!
youtube.com/watch?v=7xTGNNLP…
Greg Solon retweeted
Breaking Science News: NASA just published discovery of strong evidence suggesting that other biological life likely exists in the universe! This is such a profound discovery that I’m really surprised it hasn’t become top news!
“Not only does Bennu contain all 5 of the nucleobases that form DNA and RNA on Earth and 14 of the 20 amino acids found in known proteins, the asteroid’s amino acids hold a surprise. On Earth, amino acids in living organisms predominantly have a ‘left-handed’ chemical structure. Bennu, however, contains nearly equal amounts of these structures and their ‘right-handed’, mirror-image forms, calling into question scientists’ hypothesis that asteroids similar to this one might have seeded life on Earth.”
Greg Solon retweeted
Michael Jordan's layup, steal and jumper to win Chicago their sixth championship 🏆
Greg Solon retweeted
To everyone in the path of #HurricaneMilton, we join with @fema to urge you to LEAVE NOW if you are in an evacuation zone; there will not be time to leave on Wednesday.
Evacuation orders, open shelters, & more resources at FloridaDisaster.org/Updates




























