Jihui Yang

@JaimeAlns @xai 🫡 🐐

It’s one of those: today was my last day at @xAI. xAI has been a tremendous formative experience for me, building the API, Grok.com, and everything in between, it’s been crazy and hectic, but overall amazing. I’m especially grateful to everyone I’ve worked with, @TobyPhln and the team in London, you’re the most talented team I’ve ever worked with. I’ll be cheering from the sidelines, really excited to see what the xAI team is going to come up with next!

@HeinrichKuttler Send me all your kubernetes nudes

my phone loves autocorrecting nodes to nudes and it leads to misunderstandings

@imhaotian @elonmusk 🫡🐐

I left xAI earlier this week. It was a difficult decision. The past two years have been an intense, fun, and deeply rewarding journey, and I accomplished things I could not have imagined two years ago. Thank you @elonmusk for the opportunity and for everything I learned at xAI. Thank you @Guodzh for the trust you placed in me and for all the days and late nights we worked through together. And thank you to the entire Omni / Imagine team: thank you for your trust, and for growing together with me. It has been an honor, and I am incredibly proud of what we achieved together. I feel fortunate to have had the chance to work with all of you. At xAI, everything feels possible. I had the chance to work with and learn from some of the most exceptional people I have ever met. I was able to explore across domains: from pretraining to post-training, from language models to multimodal, from perception to generation. Joining xAI was one of the best decisions I have ever made. @grok imagine is special to me. Building video generation models, where I started with almost zero prior knowledge, from 0 to No.1, as an IC and as a lead, alongside an extraordinary team, and shipping it as a great product used by millions, all within 6 months, at age 28: I feel proud. But now it’s time for me to move on. I’m burnt out, and I know my happiness is no longer maximized in my current state. It is sad to say goodbye, but it is just the right time for a change. Best wishes to the Imagine team, you are absolutely the best, and you deserve the best. I will cherish all our memories for the rest of my life. For now, I’m taking a break and giving myself time to figure out what comes next. Posted from Hawaii.

@Guodzh Absolute legend, thank you for everything!

Last day at xAI. Wild journey past three years but excited about next chapter. Thanks all for the love and support yesterday. So many friends made along the way and I will miss you all!

@TobyPhln @xai @elonmusk It was a great honor working with you, Toby!

Three years, thousands of PRs, and a million jokes. Today was my last day @xai. To the team: you rock, no one burns the midnight oil better. To @elonmusk, thanks for taking me on board. I've learnt more about execution, speed, and product perfectionism than I could ever have imagined. Thanks for everything. My next priorities: sleep for more than 8h, write down all the things I've learnt (I have a list), and then think about what I want to do next. @gork wdyt?

Waiting for you in the trenches

@chenchen you will be proud

xAI was reorganized a few days ago to improve speed of execution. As a company grows, especially as quickly as xAI, the structure must evolve just like any living organism. This unfortunately required parting ways with some people. We wish them well in future endeavors. We are hiring aggressively. Join xAI if the idea of mass drivers on the Moon appeals to you.

@jimmybajimmyba @elonmusk It was a honor working with you Jimmy! Best wishes!

Last day at xAI. xAI's mission is push humanity up the Kardashev tech tree. Grateful to have helped cofound at the start. And enormous thanks to @elonmusk for bringing us together on this incredible journey. So proud of what the xAI team has done and will continue to stay close as a friend of the team. Thank you all for the grind together. The people and camaraderie are the real treasures at this place. We are heading to an age of 100x productivity with the right tools. Recursive self improvement loops likely go live in the next 12mo. It’s time to recalibrate my gradient on the big picture. 2026 is gonna be insane and likely the busiest (and most consequential) year for the future of our species.

@Yuhu_ai_ Best wishes!

I resigned from xAI today. This company - and the family we became - will stay with me forever. I will deeply miss the people, the warrooms, and all those battles we have fought together. It's time for my next chapter. It is an era with full possibilities: a small team armed with AIs can move mountains and redefine what's possible. Thank you to the entire xAI family. Onward. 🚀 And to Elon @elonmusk - thank you for believing in the mission and for the ride of a lifetime.

BREAKING: @xAI’s Grok-Imagine-Video now #1 in Video Arena! For the first time, Grok-Imagine-Video-720p takes the top spot on the Image-to-Video leaderboard, overtaking Google’s Veo 3.1 while being 5x cheaper. Its 480p version released a few days ago ranks #4. Huge congrats to @xAI team and @elonmusk on this incredible milestone!

Understand the universe

@GovBillLee @xai You’re most welcome. We’re working on providing Tesla Powerwalls too.

Introducing Grok Imagine 1.0, our biggest leap yet. 1.0 unlocks 10-second videos, 720p resolution, and dramatically better audio. Imagine has generated 1.245 billion videos in the last 30 days alone. Try it now: grok.com/imagine

Try the all new Grok Imagine API: x.ai/news/grok-imag…

Over 5.5B images generated in the last 30 days with Grok Imagine. ✨

@TheGregYang Speedy recovery! Let Make Greg Great Again!

I've been suffering from Lyme disease. I'm stepping back from xAI into an informal advisory role so I can go founder mode on my health, starting today. --- The symptoms started when I got sick (cold, flu, or COVID -- I'm not sure which) in early 2025. I distinctly felt less energetic, less creative, and less agentic even weeks after "recovery." After that, my condition ebbed and flowed, but the lows kept getting lower. Accidentally eating the wrong thing would make me extremely tired, taking days to recover. Working out would leave my whole body feeble for days. There was a week where I slept 12 hours a day and still couldn't recover. Lyme is famously hard to diagnose, but luckily I have an incredible doctor. He suspected these symptoms, far from being just in my head, indicated immune issues. Detective work over a few rounds of testing revealed I have Lyme disease. I was very surprised because Lyme is said to come from tick bites (where the bump looks like a target), but I don't ever remember having one. Likely I contracted Lyme a long time ago, but until I pushed myself hard building xAI and weakened my immune system, the symptoms weren't noticeable. --- Overall, I actually feel lucky to have discovered this early. Lyme is a serious disease that only gets harder to treat with age -- patients discovering it in their 50s or 60s have a much tougher time. Lyme can also be debilitating, leaving its victims bedridden, but luckily I'm still functional and can take care of myself day to day. So while some folks have said "you shouldn't have pushed yourself so hard," I'm glad I did. I found this issue early, and now I can fix it so I can push myself even harder when I rebound. --- Chronic Lyme is not well understood in the literature or by the public. For folks suffering from it, it can be a lonely fight. But I hope my story can make it just a little less lonely.

Apply to the kernel team and you get the chance to show @elonmusk how to write efficient kernels in PTX for GB300.

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