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Jonathan Xu

@jonxuxu
noninvasive neural decoding @alljoined
San Francisco, CA
Joined July 2016
963
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RepliesMedia
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    Jonathan Xu
    @jonxuxu
    Jun 1
    We successfully predicted emotion from brain activity, achieving >2x performance to the previous state of the art. Alljoined collected a dataset of 3,408 videos paired with EEG data across 24 participants, covering happy, sad, fear, anger, disgust, and neutral emotion.
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    Jonathan Xu
    @jonxuxu
    Dec 12, 2025
    exciting times for feedback loops
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    Odyssey
    @odysseyml
    Dec 11, 2025
    Say hi to Odyssey-2 Pro—our most intelligent, interactive, and general-purpose world model yet. Every pixel is generated in real-time, and frame-by-frame the model simulates the world forward. Today for minutes, soon for hours. Available to developers and our API very soon.
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    Jonathan Xu
    @jonxuxu
    Nov 21, 2025
    A future where AI gets good at research but we still name discoveries after the scientist will be incredible “we refer to the BigBoi-405B constant which defines the speed of time”
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    Jonathan Xu
    @jonxuxu
    Oct 4, 2025
    Trying out a more long form interview format to dive deeper into the topic of neural decoding. The timelines are shorter than what most people think, exciting times!
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    Benyam Ephrem
    @bephrem
    Oct 4, 2025
    .@_alljoined might be the closest startup in the world to non-invasive mind-reading. They’re already decoding images from brain activity. Now they’re working on emotions. Interview w/ @jonxuxu 0:42 Why Now for Brain Decoding 2:22 Research Motivation 5:32
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