Project AURIONAI Use-Cases Research & Innovation
multimodal LLM

Cosmos Reason 2

NVIDIA physical-AI reasoning VLM; backbone of Alpamayo 1.5.

NVIDIANVIDIAUSACosmosFamily
NVIDIA
Levelmodel
Classmultimodal LLM
Parametersnot in the notes
Contextnot in the notes
Released6 Jan 2026
Opennessunknown
Runs onnot in the notes
Statusactive

Lineage

finetunesuccessor
Cosmos Reason 1 to Alpamayo-R1: finetune, low confidenceCosmos Reason 1 to Cosmos Reason 2: successor, medium confidenceCosmos Reason 2 to Alpamayo 1.5-10B: finetune, high confidenceCosmos Reason 1Cosmos Reason 1NVIDIAAlpamayo-R1Alpamayo-R1NVIDIA, Dec 2025Cosmos Reason 2Cosmos Reason 2NVIDIA, Jan 2026Alpamayo 1.5-10BAlpamayo 1.5-10BNVIDIA, Mar 2026
NVIDIACosmos Reason 1 is the parent (successor)medium confidencenotes
NVIDIAAlpamayo 1.5-10B is a child (finetune)high confidencemodel card
Where this comes from
Parent and child relations from model cards, Hugging Face base_model fields and the genealogy tables of the research notes. The tree shows two generations each way, 4 models. Confidence and evidence are the notes' own.

R&D Topics

Visual instruction tuningproduced byWorld models (self-supervised video, robotics)used by

Identity

Developer
NVIDIA
Family
Cosmos
Released
6 Jan 2026 sourcesannouncement page
Weights published
–
Record checked
10 Oct 2026
Where this comes from
Developer and dates from the research notes. Release date is the vendor's public announcement; weights date is when open weights were published.

Architecture and Size

Architecture
not in the notes
Total parameters
– sources
Active parameters
–
Checkpoint parameters
–
Note
2B and 8B
Context length
not in the notes
Input
image, video, text
Output
text
Where this comes from
Parameter counts as the developer states them. Where the checkpoint holds a different total, both are shown (register A16).

Openness and Access

Openness
unknown
Licence
not in the notes sources
Access routes
open weights download
Where this comes from
The licence file governs over registry tags and aggregator labels.

Deployment

Runs on
not in the notes
Footprint
not in the notes
Runtimes
not in the notes
Where this comes from
Deployment tiers and runtimes as named in the notes. Footprint is the notes' figure, not a measurement by AURION.

Indonesia

Indonesian support
not stated
Regional languages
not in the notes
Jakarta hosting
unknown
Languages
not in the notes
Where this comes from
Indonesia fields are carried on every model; unknown is an allowed value.

Benchmark Results

The notes record no benchmark result for this model.

Industry Use Cases

No industry use case links this model.

Sources

  1. NVIDIA Cosmos Announcements at CES 2026 forums.developer.nvidia.com https://forums.developer.nvidia.com/t/nvidia-cosmos-announcements-at-ces-2026/356629
  2. Alpamayo-1.5-10B | NVIDIA NGC catalog.ngc.nvidia.com https://catalog.ngc.nvidia.com/orgs/nim/nvidia/models/alpamayo-1-5-10b/-

To cite this page: Project AURION, AI Use-Cases Research & Innovation, "Cosmos Reason 2", https://aurion.semai.id/models/nvidia-cosmos-reason-2/, records of October 2026.