Fei-Fei Li
@drfeifei
Prof (CS @Stanford), Co-Director @StanfordHAI, Cofounder/CEO @theworldlabs, #AI #SpatialIntelligence #GenAI #computervision #robotics #AI-healthcare
After 3+ years, today is the day that my book “The Worlds I See” gets to see the world itself. It is a science memoir of the intertwining histories of me becoming an #AI scientist, and the making of the modern AI itself. All versions are now on Amazon a.co/d/fYKf74L 1/

This is a really cool paper by my student @keshigeyan and collaborators! 😍
1/ Model architectures have been mostly treated as fixed post-training. 🌱 Introducing Grafting: A new way to edit pretrained diffusion transformers, allowing us to customize architectural designs on a small compute budget. 🌎 grafting.stanford.edu Co-led with @MichaelPoli6
Take out your VR set and “touch” the Gaussians, while enjoying a chill stroll in different worlds.
During the development of Spark, we built a demo to showcase the potential of using full scale AI generated 3D worlds as immersive VR environments.
Thought experiment: If you were blindfolded in a room and someone only described what’s around you… could you complete a task? Now imagine seeing the room. Instantly, your brain reconstructs the space in 3D. That’s why language isn’t enough. @martin_casado and @drfeifei…
Today we at @theworldlabs are launching Forge: an open-source Gaussian splat renderer with seamless THREE.js integration. It's both very fast and very flexible. We have been using it internally for a while now, excited to see what the community builds with it!
Open Sourcing Forge: 3D Gaussian splat rendering for web developers! 3DGS has become a dominant paradigm for differentiable rendering, combining high visual quality and real-time rendering. However, support for splatting on the web still lags behind its adoption in AI.
Nice. World Labs open sourced their 3d gaussian splat renderer; built as a first-class ThreeJS citizen instead of bolting it on. Multiple splats, proper scene hierarchy, can transform and animate them, mix with regular meshes, plus works on mobile and VR. Also makes splats…
Open Sourcing Forge: 3D Gaussian splat rendering for web developers! 3DGS has become a dominant paradigm for differentiable rendering, combining high visual quality and real-time rendering. However, support for splatting on the web still lags behind its adoption in AI.
Creating high quality 3DGS objects or scenes is simpler than ever, yet rendering them still lacks robust support in many toolchains. Today, we're excited to unveil Forge (forge.dev), a cutting-edge 3DGS renderer that effortlessly integrates with THREE.js.
At @theworldlabs, we built a new Gaussian splatting web renderer with all the bells and whistles we needed to make splats a first-class citizen of the incredible @threejs ecosystem. Today, we're open sourcing Forge under the MIT license.
Check out this shiny new, fast and dynamic web renderer for 3D Gaussian Splats! The things one could do are just mind boggling! So proud of the @theworldlabs team that made this happen, and we are making this open source for everyone!
Open Sourcing Forge: 3D Gaussian splat rendering for web developers! 3DGS has become a dominant paradigm for differentiable rendering, combining high visual quality and real-time rendering. However, support for splatting on the web still lags behind its adoption in AI.
I had a great time chatting with @MargaretHoover about AI. You can watch here.
"No matter what technology can do, human dignity is absolutely central to our civilization." @drfeifei, co-founder of @StanfordHAI, discusses the challenge of preserving humanity while advancing artificial intelligence. FULL EPISODE: bit.ly/3H3xcoH
Very excited by our work on visual affordance learning in the wild for robotics! 🤩
How to scale visual affordance learning that is fine-grained, task-conditioned, works in-the-wild, in dynamic envs? Introducing Unsupervised Affordance Distillation (UAD): distills affordances from off-the-shelf foundation models, *all without manual labels*. Very excited this…
Very honored! Thank you @Yale !
During its 324th graduation ceremony on Monday, Yale University awarded honorary degrees to eight individuals whose achievements in their fields have benefited the common good. This year’s honorary degree recipients are Debbie Allen, the beloved performer, producer, and…
I've long believed we need a different lens through which to view the future of artificial intelligence in business. Very proud to see my concept of Enterprise General Intelligence (EGI) has been extensively covered by Sabrina Ortiz @ZDNet in this recent article:…
#wish2game is now here thanks to AI! Amazing work @PlayAstrocade team! 🎉🙌
During its 324th graduation ceremony on Monday, Yale University awarded honorary degrees to eight individuals whose achievements in their fields have benefited the common good. This year’s honorary degree recipients are Debbie Allen, the beloved performer, producer, and…
Drum roll 🥁 @StanfordHAI ‘s annual #AIIndex2025 is out! This is one of the most trusted annual reports on the state of AI globally. Everyone interested in AI should read this!
📢Introducing #AIIndex2025: This year's report highlights the most critical trends in AI – from shifting geopolitical landscape and rapid technological evolution, to AI’s expanding role in science and medicine, business, and public life. Read more: hai.stanford.edu/ai-index/2025-…
Check out our newly released WorldScore, by our @StanfordSVL team on benchmarking world models!!❤️🔥🌎🏆
🔥Spatial intelligence requires world generation, and now we have the first comprehensive evaluation benchmark📏 for it! Introducing WorldScore: Unifying evaluation for 3D, 4D, and video models on world generation! 🧵1/7 Web: haoyi-duan.github.io/WorldScore/ arxiv: arxiv.org/abs/2504.00983
Love this 🧵@ccamp___ and @Tocelot ! Thanks for sharing the excitement of building World Models! @theworldlabs
[New post + market map + video] 🔥 AI Learned to Talk. Now it’s Learning to Build Reality What if you could step into any world you can imagine? Not just view it, but walk around, interact, and create within it? That's the promise of AI World Models. The leap from language…
“We are very much not in AI winter anymore, it’s AI Global Warming” 😂 Jokes aside, super excited about CS231N this Spring 2025, 10th year anniversary of the course! @cs231n @drfeifei