Kimi just released the best open-source thinking model last week. It topped benchmarks like HLE and BrowseComp, even beating big closed-source models like Grok-4 and GPT-5. And get this: they pulled it off using just 1/1000 of the compute those closed models use. Absolutely
MACHINE LEARNING
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xAI drops Grok-4-Fast: 2M-token reasoning model, faster, cheaper
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xAI just dropped a monster: Grok-4-Fast Its a 2M-token reasoning model that’s faster than anything in its class and cheaper than lunch. $0.20 in / $0.50 out per million tokens. That’s 6× cheaper than Grok-4-0709 with the same brain. The wild part? It’s not just speed. It’s
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Tribute to Yann LeCun: Influential Scientist and Generous Mentor
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Yann @ylecun is of the the greatest scientists and engineers I’ve ever met, one of the most influential people in the history of AI. He’s also one of the kindest. I will be forever grateful to him for his support when I was a younger researcher, and long before money appeared in
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Neural Fly: Deep Learning Drone Handles High Wind Conditions
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Soon-Jo Chung showing neural fly: a deep learning based drone that can handle high wind conditions at @Caltech conference. Join our livestream
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Gianmarco presents lung ultrasound neural operator at Caltech
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Gianmarco presenting on lung ultrasound neural operator at @Caltech conference. Join our livestream https://
aiscienceconference.caltech.edu -
Spherical Fourier Neural Operators with Spectral Bias Correction
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Ashesh explaining how he uses spherical Fourier neural operator with spectral bias correction. Join our livestream
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AI Weather Models History: FourCastNet Collaboration
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Pedram talking about the history of AI based weather models starting with our collaborative FourCastNet model
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Fourier Neural Operators for Climate Modeling with Chris Bretherton
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Chris Bretherton using spherical Fourier neural operator for climate modeling. Join our livestream
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AI-based climate emulation with Chris Bretherton livestream
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Chris Bretherton talking about AI based climate emulation. Join our livestream https://
aiscienceconference.caltech.edu -
Early Robot Research: Running Before Walking Innovation
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Great points Jack! My first year of grad school I worked in that lab where Marc, Jeff, Jessica, Mike, and Ben were brilliantly bucking conventional wisdom by showing that robots could run before they could walk… https://t.co/XKYxdm5Jd2
— Ken Goldberg (@Ken_Goldberg) 11 novembre 2025Great points Jack! My first year of grad school I worked in that lab where Marc, Jeff, Jessica, Mike, and Ben were brilliantly bucking conventional wisdom by showing that robots could run before they could walk…