Nvidia Cosmos 3

(developer.nvidia.com)

80 points | by tosh 2 hours ago

7 comments

  • mangoman 2 minutes ago

      This release unifies those capabilities with a Mixture-of-Transformers (MoT) architecture built around two towers. 
      Reasoner tower: A vision-language model (VLM) ... This serves as the ‘brain’ that reasons about the world before any generation happens.
      Generator tower: Generates future observations and action sequences. This tower uses a diffusion-based process to generate physics-aware video and action outputs that are conditioned on the reasoner tower’s understanding.
    
    This sort of approach (and others i've seen like it) always appeal to my inner engineer, trying to optimize and balance tradeoffs between model architectures and combine two things to yield the best of both worlds

    But based on my understanding of the Bitter Lesson (http://www.incompleteideas.net/IncIdeas/BitterLesson.html), this is precisely the wrong approach in the long term. I'm linking the actual text of the bitter lesson because I think it's misunderstood (or I just don't agree with how i've seen it used in discourse). Specifically:

      The bitter lesson is based on the historical observations that 1) AI researchers have often tried to build knowledge into their agents, 2) this always helps in the short term, and is personally satisfying to the researcher, but 3) in the long run it plateaus and even inhibits further progress, and 4) breakthrough progress eventually arrives by an opposing approach based on scaling computation by search and learning. The eventual success is tinged with bitterness, and often incompletely digested, because it is success over a favored, human-centric approach. 
    
    This architecture feels specifically like "trying to build knowlege into the agent that will help in the short term" but will plateau long term. That's not to say that there won't be some interesting learnings or things built on top of it, but I doubt that there's a lot of juice to squeeze with this kind of approach IMO.
  • aabdi 1 hour ago
    SOTA open source model for image and vid generation. Beats all others but is too big to run on most people’s computers at 64b params.

    Still impressive nonetheless given its artificially generated training sets.

    Beats nano banana 1 but not yet competitive with 2 or seedance2, grok imagine,etc.

    • xnx 1 hour ago
      Great summary. I find image and video generation models are a more understandable reality check for how close local models are to frontier models.
  • BugsJustFindMe 11 minutes ago
    The warehouse safety video example is really funny, because the people don't react at all.
  • darth_avocado 1 hour ago
    > Cosmos 3 Nano is the compact version with 16B parameters and optimized for efficient inference. It’s designed to run on workstation-grade compute, like the NVIDIA RTX PRO 6000 GPU for real-time robotics inference and physical AI applications.

    Looking forward to trying this out on my $10000+ workstation grade GPU that I need an equally expensive set up to run.

    • thewebguyd 9 minutes ago
      Good news, Nvidia will happily sell you one of their new RTX Spark laptops to run this.
  • sosodev 10 minutes ago
    Most of the examples they've chosen seem.. not good? What an odd mix of bad game engine and AI slop. I can't imagine that this stuff makes good training data for real-world applications.
  • causal 1 hour ago
    I'm struggling to understand what this does.

    > Generates future observations and action sequences.

    Is that just a complicated way of saying video gen?

    • heliosAtwork 17 minutes ago
      It can be used to generate synthetic data to train physical AI for robots, cars, drones, etc. The world can be simulated from first person perspective to generate training data without sending robots to peoples homes.
    • swiftcoder 1 hour ago
      As I understand it, they mean both computer vision and video gen, linked by a pretty robust world model. One of their hosted examples is purely analysing an existing video, the other is predicting (i.e. video gen) from a static image to a video
    • derac 1 hour ago
      Look at the table of supported modalities. It can take in input of image/video/text/actions and output image/video/text/actions.
      • causal 39 minutes ago
        That just raises more questions. What kind "observation or action" image does input generate? What is an action output if it's not text?
    • ainch 56 minutes ago
      You can fine-tune it so, given an image and a task description, it generates a corresponding set of actions.
  • kushagra1211 2 hours ago
    [flagged]