Xinlei Chen retweeted
I’m honored to be included in this year’s MIT TR 35 Under 35 @techreview for my work on robotics. Grateful to my mentors and collaborators for their guidance, support, and inspiration along the way!
ter.li/ryad5nul
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We’re sharing a solution to the Navier-Stokes Millennium Prize Problem, one of the deepest problems at the frontier of mathematics.
The proof was produced by a group of agents, using an OpenAI next-generation model significantly more capable than GPT-6 Astra.
The problem concerns whether the description of smooth three-dimensional fluid motion modeled by the Navier-Stokes equations can break down. It has remained unresolved for roughly 90 years.
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GPT-6 Astra is now available to all Pro, Enterprise, and Business Premium users in ChatGPT Work and Codex. It's also live in the API.
It might take a few days to roll out to our Plus and Business users. Thank you for your patience.
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Congratulations! The world needs faster multimodal inference!
Nunchux AI (nunchux.ai) comes out of stealth today.
Ten years ago at Berkeley, we spent whole nights on a Titan X in Theano, trying to make iGAN, pix2pix, and CycleGAN real-time so creators could see the results the moment they asked for them.
Image models now cost about 10,000x more to run. Video is another two orders of magnitude beyond that. The reason for speed has not changed. Every attempt is a question, and the answer changes the next question. Latency decides whether the result arrives while the idea is still yours. Cost decides how many questions you get to ask. Quality decides whether the answers were worth asking for.
So we are building fast, cheap, and high-quality multimodal inference for every developer and enterprise, and we are building with researchers from MIT, CMU, and Berkeley, along with engineers who have shipped at AMD, NVIDIA, and Snowflake.
We are now opening access through the waitlist. New accounts get $10 in credits.
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Xinlei Chen retweeted
Computer Use in Astra has crossed a threshold where it is now a core capability of a flagship release. It is the culmination of many months of intentional work across many teams at OpenAI. There are still kinks being ironed out, but I expect we will soon reach the “coding moment for computer use” where we will all look back and find it odd that people used to manually take actions on computers at all.
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Nicely done folks, and keep up the great work!
Grok 4.6 multimodal is a step change from Grok 4.5. It’s one of the under-discussed improvements, and I’ve been very impressed by it.
My daily work includes reviewing lots of videos and understanding the context; Grok 4.6 improves the productivity of such workloads by at least 10x if not 100x.
Such workflows may not be captured by common VLM benchmarks, but in my use cases it outperforms Gemini 3.5 and Gemma 4, which is considered the SOTA of VLMs in my opinion.
Hats off to the multimodal teams—you did a great job.
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Xinlei Chen retweeted
Introducing Grok 4.6.
It delivers frontier intelligence and is a significant improvement over Grok 4.5 at the same price.
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Upgrades on every aspect and agent mode is yet to come!
Announcing Imagine Image 2.0, our next generation image model with precision editing, crisp text rendering, improved factuality, and real world usefulness.
Image 2.0 helps you make images for real work.
x.ai/news/grok-imagine-image…
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Grok 4.5, based on our 1.5T V9 foundation model, with Cursor data added in supplemental training, is now in private beta at SpaceX & Tesla. Early evals show performance close to, perhaps exceeding Opus.
RL is continuing to significantly improve the model, and the Grok Build harness gets better every day.
Nice work by all those involved!
Completely trained from scratch new models will be released by @SpaceX every month this year.
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AI generation is now so good that telling real from fake is hard at a glance -- which is exactly why it matters more than ever.
Weird reminder this week: my account got hacked, so some activity wasn't me (sorry for the noise). Let's use these tools safely and responsibly.
Grok Imagine Video 1.5 is here
Our new image-to-video model with sharper realism, better physics and faster generations 🧵
grok.com/imagine
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Xinlei Chen retweeted
Grok Imagine is getting better and better. Our only goal is to make it genuinely useful. If we do that well, strong rankings will naturally follow as a byproduct.
Grok-Imagine-Video-1.5-Preview (720p) has landed #1 in the Image-to-Video Arena!
This is a massive +52 pt improvement over Grok-Imagine-Video (720p), surpassing the best video models Seedance-2.0 and HappyHorse.
Congrats to @xAI and @elonmusk on this big achievement!
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Been using Grok Build these past few days, and the thing that really got me hooked is Imagine and Imagine Video.
I built a full dinosaur encyclopedia site — every image, every video clip on it, all generated by Grok itself. One prompt: "build a dinosaur encyclopedia site, generate matching images and videos, add them in" — visuals, video, copy, layout, the whole thing done in one flow. No jumping between a dozen tools.
It's perfect for building science and education sites for kids — dinosaurs, space, animals, history, geography… Grok generates vivid visuals and videos that make knowledge way easier to grasp, more visual, more fun.
Grok Build is now available in Beta for all SuperGrok and X Premium+ users.
Use Plan Mode, create images and videos with Imagine, and build automations or orchestrators with the CLI.
Visit x.ai/cli to get started.
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Toward a full-blown harness for multimodal agents!
Grok Imagine Agent Mode (beta) is here!
- Brainstorm with agents on an infinite canvas
- Create & edit multiple images at once
- Turn images into videos & stitch them together
- Trim, fade, crop, export, and more…
Go to the web app and give it a try.
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Spend more compute and get higher quality.
Any request for smoother experience to create, let us know!
Introducing Quality mode on Grok Imagine – powered by our most advanced image generation model.
Quality mode gives you enhanced details, stronger text rendering, and higher levels of creative control.
Now available on web and mobile.
Try it at grok.com/imagine
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