--- title: Post-Train NVIDIA Cosmos 3 in One Day Using Agent Skills description: NVIDIA Cosmos 3 Nano, a physical AI world foundation model, can be post-trained for video question answering in a single day using NVIDIA TAO agent skills and... canonical: https://daily.dev/posts/post-train-nvidia-cosmos-3-in-one-day-using-agent-skills-hbjdy6hn2 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Post-Train NVIDIA Cosmos 3 in One Day Using Agent Skills | daily.dev og:description: NVIDIA Cosmos 3 Nano, a physical AI world foundation model, can be post-trained for video question answering in a single day using NVIDIA TAO agent skills and... og:url: https://daily.dev/posts/post-train-nvidia-cosmos-3-in-one-day-using-agent-skills-hbjdy6hn2 og:image: https://api.daily.dev/og/posts/HBJdY6Hn2.png og:image:alt: Post-Train NVIDIA Cosmos 3 in One Day Using Agent Skills og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Post-Train NVIDIA Cosmos 3 in One Day Using Agent Skills **[NVIDIA Developer](https://daily.dev/sources/nvidiadev)** · 11 min read · 0 upvotes · 0 comments ## Summary NVIDIA Cosmos 3 Nano, a physical AI world foundation model, can be post-trained for video question answering in a single day using NVIDIA TAO agent skills and a coding agent like Codex. Using LoRA fine-tuning, a single natural language prompt triggers an automated pipeline that handles data patching, baseline evaluation, and training — boosting zero-shot accuracy from 54.41% to 87.14% in ~30 minutes on 8 A100 GPUs. A second prompt triggers TAO AutoML with Bayesian optimization across 43 parallel trials, pushing accuracy to 93.35%. The workflow compresses what was previously a multi-day engineering effort into one day of automated execution, and the resulting LoRA adapter can be deployed via Cosmos 3 Reasoner NIM for production use. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Post-Train NVIDIA Cosmos 3 Edge for On-Device Robot Control](https://daily.dev/posts/post-train-nvidia-cosmos-3-edge-for-on-device-robot-control-r7vd07xq2) · NVIDIA Developer · 0 upvotes · 0 comments - [Fine-Tuning NVIDIA Cosmos Predict 2.5 with LoRA/DoRA for Robot Video Generation](https://daily.dev/posts/fine-tuning-nvidia-cosmos-predict-2-5-with-lora-dora-for-robot-video-generation-uptnktldn) · Hugging Face · 0 upvotes · 0 comments --- Tags: [#deep-learning](https://daily.dev/tags/deep-learning), [#automl](https://daily.dev/tags/automl), [#lora](https://daily.dev/tags/lora), [#vlm](https://daily.dev/tags/vlm) [View this post on daily.dev](https://daily.dev/posts/post-train-nvidia-cosmos-3-in-one-day-using-agent-skills-hbjdy6hn2) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Post-Train NVIDIA Cosmos 3 in One Day Using Agent Skills","url":"https://daily.dev/posts/post-train-nvidia-cosmos-3-in-one-day-using-agent-skills-hbjdy6hn2","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/post-train-nvidia-cosmos-3-in-one-day-using-agent-skills-hbjdy6hn2"},"datePublished":"2026-07-14T16:01:27.835Z","dateModified":"2026-07-14T16:01:52.892Z","description":"NVIDIA Cosmos 3 Nano, a physical AI world foundation model, can be post-trained for video question answering in a single day using NVIDIA TAO agent skills and...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/691ab7819eaa6a8b5d9e383b9c0a41e9?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/691ab7819eaa6a8b5d9e383b9c0a41e9?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"NVIDIA Developer","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"NVIDIA Developer","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/86e45aab42ba48ce83103d01b1119910","url":"https://daily.dev/sources/nvidiadev"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/post-train-nvidia-cosmos-3-in-one-day-using-agent-skills-hbjdy6hn2","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"deep-learning,automl,lora,vlm","timeRequired":"PT11M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"NVIDIA Developer","item":"https://daily.dev/sources/nvidiadev"},{"@type":"ListItem","position":3,"name":"Post-Train NVIDIA Cosmos 3 in One Day Using Agent Skills"}]} ```