OpenMDW
Living Index · Updated August 28, 2026

Open-weight models released under OpenMDW

A curated index of upstream model releases using the Open Model, Data & Weights license. Built to make adoption visible across organizations, modalities, and scientific domains.

48release groups
12publisher groups
36domains
Aug 2026last reviewed
Nemotron Labs Teacher — General Reasoning latest release · Aug 14, 2026 ↗
Living indexUpstream releases only · canonical model links · mirrors and third-party quantizations excluded
48 verified upstream model and release groupsOrganized by publisher, then model family

Arcee AI

6 release groups
Trinity model releases spanning compact, general-purpose, and reasoning-oriented language models.
Arcee AI
OpenMDW 1.1

Trinity Large Base

💬Language / Reasoning398B / ~13B active

Base checkpoint for the Trinity Large family.

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Arcee AI
OpenMDW 1.1

Trinity Large Preview

💬Language / Reasoning398B / ~13B active

Post-trained / preview Trinity Large release.

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Arcee AI
OpenMDW 1.1

Trinity Large Thinking

💬Reasoning / Agents398B / ~13B active

Reasoning-optimized, agentic RL variant of Trinity Large.

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Arcee AI
OpenMDW 1.1

Trinity Large TrueBase

💬Language / Reasoning398B / ~13B active

Upstream Trinity Large training-stage release.

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Arcee AI
OpenMDW 1.1

Trinity Mini

💬Language / Reasoning—

Mini upstream training-stage and post-trained releases grouped.

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Arcee AI
OpenMDW 1.1

Trinity Nano

💬Language / Reasoning6B / 1B active

Nano upstream checkpoints, including Base and Pre-Anneal, grouped.

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BAAI

1 release group
OpenSeek-Small releases for efficient language and reasoning workloads.
BAAI
OpenMDW 1.0

OpenSeek-Small v1

💬Language / Reasoning1.4B total / 0.4B active

Includes upstream baseline/SFT releases. License metadata discrepancy: Hugging Face currently displays Apache-2.0; the upstream model card and repository LICENSE specify OpenMDW 1.0.

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ByteDance Seed

1 release group
Seed-X instruction, reasoning, reward-model, and translation-oriented releases.
ByteDance Seed
OpenMDW 1.0

Seed-X

💬Translation / Reasoning7B

Instruction, PPO/reasoning and reward-model releases; official quantized variants are grouped.

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hyper³labs

1 release group
Multimodal embedding models for image-text representation and retrieval.
hyper³labs
OpenMDW 1.0

Hyper3-CLIP

🔍Multimodal Embeddings~0.1B

Vision-language embedding model for hierarchy-sensitive retrieval.

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IBM & collaborators

2 release groups
Chemistry and geospatial models spanning reaction prediction, retrosynthesis, and environmental mapping.
IBM / Hartree collaboration
OpenMDW 1.0

UK Saltmarsh RGB+DEM Extent

🌍Geospatial / Environment—

Fine-tuned geospatial foundation model for English saltmarsh extent detection.

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IBM / Hartree collaboration
OpenMDW 1.0

UK Saltmarsh Sentinel-2 Extent

🌍Geospatial / Environment—

Sentinel-2 geospatial model for English saltmarsh extent detection.

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NVIDIA

30 release groups
OpenMDW releases spanning language, reasoning, world models, robotics, autonomous driving, retrieval, quantum computing, speech, safety, weather, Earth systems, and medical AI.
NVIDIA
OpenMDW 1.1

Alpamayo 1

🚗Autonomous Driving / Vision-Language-Action~10.5B

Historical Alpamayo-R1-10B release newly qualifying after NVIDIA migrated the model weights to OpenMDW 1.1. The model card still retains stale non-commercial wording, which remains a documented metadata inconsistency.

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NVIDIA
OpenMDW 1.1

Alpamayo 1.5

🚗Autonomous Driving / Vision-Language-Action~10.5B

Historical Alpamayo 1.5 release newly qualifying after NVIDIA migrated the model weights to OpenMDW 1.1. The model card still retains stale non-commercial wording, which remains a documented metadata inconsistency.

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NVIDIA
OpenMDW 1.1

Alpamayo 2 Super

🚗Autonomous Driving / Physical AI34B

Unified AV foundation model with a 32B VLM backbone plus 2B diffusion expert for trajectory prediction, visual QA, grounding and auto-labeling.

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NVIDIA
OpenMDW 1.1

Cosmos 3 Edge

🧠World Models / Edge AI4B

Edge-oriented world model for robots and vision AI agents. NVIDIA refreshed the generator checkpoint on Aug. 25, 2026; earlier main snapshots should be refreshed.

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NVIDIA
OpenMDW 1.1

Cosmos 3 Image / Video Generators

📷Image / Video Generation64B

Super Image2Video and Text2Image releases, including official distilled 4-step variants.

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NVIDIA
OpenMDW 1.1

Cosmos 3 Nano

🦾World Models / Physical AI16B

Omnimodal world model for physical AI.

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NVIDIA
OpenMDW 1.1

Cosmos 3 Policy — DROID

🦾Robotics / Policy16B / 4B

Nano-Policy-DROID and Edge-Policy-DROID upstream policy releases grouped.

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NVIDIA
OpenMDW 1.1

Cosmos 3 Super

🦾World Models / Physical AI64B

Large omnimodal world model for understanding, simulation and action reasoning.

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NVIDIA MedTech
OpenMDW 1.1

Cosmos-H-Surgical v0.2.0 OpenMDW editions

🧠Medical / Surgical AI—

Historical Cosmos 2.5-era OpenMDW Predict, Depth, Edge, Seg and Vis Transfer checkpoints; kept distinct from the later unified Cosmos 3 v0.3.0 model.

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NVIDIA
OpenMDW 1.1

Cosmos-H-Surgical v0.3.0 (Cosmos 3)

🦾Medical / Surgical AI / Physical AI~16B

Unified Cosmos3-Nano surgical video model for prediction and simulation-to-real transfer. Counted separately from v0.2 because the base architecture, size and checkpoint organization changed materially; upstream hub metadata has carried a license-field inconsistency while the model card and governing license files specify OpenMDW 1.1.

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NVIDIA Earth-2
OpenMDW 1.1

DLESyM v0 ISCCP / ERA5

🌍Earth Systems / Climate—

Earth-system model package with atmosphere, precipitation diagnostic and ocean checkpoints.

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NVIDIA
OpenMDW 1.1

llama-nemotron-rerank-vl-1b-v2

🔍Multimodal Retrieval / Reranking / RAG~1.7B

Multimodal cross-encoder reranker for document-page retrieval and RAG. A historical release newly qualifying after NVIDIA migrated the model and configuration files to OpenMDW 1.1; upstream Llama 3.2 terms remain separately noted.

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NVIDIA
OpenMDW 1.1

Nemotron Labs Teacher — Chat

💬Conversational AI / RLHF / Distillation550B / 55B active

Chat-focused Nemotron 3 Ultra teacher checkpoint with additional SFT and RLHF for multi-turn dialogue, preference alignment, grading, synthetic-data generation and distillation.

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NVIDIA
OpenMDW 1.1

Nemotron Labs Teacher — Competition Coding

💻Coding / Reasoning / Distillation550B / 55B active

Specialized Nemotron 3 Ultra teacher checkpoint for competitive programming, algorithmic problem solving, verified code-solution generation and coding-reasoning distillation.

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NVIDIA
OpenMDW 1.1

Nemotron Labs Teacher — Instruction Following

💬Instruction Following / Structured Outputs / Distillation550B / 55B active

Specialized Nemotron 3 Ultra teacher checkpoint for constraint satisfaction, structured outputs, formatting adherence, instruction-following data generation and grading.

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NVIDIA
OpenMDW 1.1

Nemotron Labs Teacher — STEM

💬Reasoning / STEM / Distillation550B / 55B active

Specialized Nemotron 3 Ultra teacher checkpoint for math, code, natural sciences, knowledge-intensive QA, synthetic-data generation and reasoning-trace distillation.

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NVIDIA
OpenMDW 1.1

StormScope-Solar (NSRDB)

☀️Weather / Solar Energy / Earth Systems~3M / network

Solar irradiance model from GOES imagery over CONUS. Upstream checkpoints were public before the model card’s stated Aug. 31, 2026 date; OpenMDW 1.1 licensing was added in August, so the release-date conflict remains annotated.

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NVIDIA Earth-2
OpenMDW 1.1

CorrDiff COSMO / ERA5

⛅Weather / Downscaling—

Generative weather downscaling release.

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NVIDIA
OpenMDW 1.1

Ising Calibration 1.5

⚛️Quantum Computing31B

Multimodal quantum calibration analysis model; official NVFP4 encoding grouped. Model card also references Apache-2.0 as additional information, so component scope should remain annotated.

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NVIDIA
OpenMDW 1.1

Ising Decoder ColorCode 1 Fast

⚛️Quantum Computing~2.94M

AI-based pre-decoder for color-code quantum error correction.

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NVIDIA
OpenMDW 1.1

Nemotron 3 Embed

🔍Embeddings / Retrieval1B / 8B

1B and 8B embedding model releases grouped; official NVFP4 format grouped.

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NVIDIA
OpenMDW 1.1

Nemotron 3 Ultra

💬Language / Reasoning550B / 55B active

Ultra, Base and GenRM upstream releases grouped; official precision variants are not counted separately.

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NVIDIA
OpenMDW 1.1

Nemotron 3.5 Lightning 30B-A3B

💬Language / Reasoning / Agents30B / 3B active

Hybrid Mamba-2 + MoE + Attention model for reasoning, coding, RAG and agentic workloads; base and post-trained checkpoints plus official precision and speculative-decoding variants are grouped.

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NVIDIA
OpenMDW 1.1

Nemotron Labs Teacher — General Reasoning

💬Reasoning / Distillation / Synthetic Data550B / 55B active

Specialized long-horizon reasoning teacher model derived from Nemotron 3 Ultra with additional reasoning-focused SFT and reinforcement learning; released for reasoning, distillation and synthetic-data generation.

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NVIDIA
OpenMDW 1.1

Nemotron 3.5 ASR Streaming

🎤Speech Recognition0.6B

Multilingual cache-aware streaming speech recognition model.

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NVIDIA
OpenMDW 1.1

Nemotron 3.5 Content Safety

🛡️Safety / Multimodal4B

Multimodal content-safety model; repository identifies additional upstream Gemma terms.

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NVIDIA
OpenMDW 1.1

Nemotron Labs Puzzle 75B-A9B

💬Reasoning75B / 9B active

Compressed reasoning model; official FP8/NVFP4 encodings grouped.

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NVIDIA
OpenMDW 1.1

NemotronLabs VoiceChat 11B

🎤Voice / Conversational AI11B

Conversational speech/audio model.

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Open Model Initiative

1 release group
Open model components for image representation and generation workflows.
Open Model Initiative
OpenMDW 1.0

SVQVAE

📷Image / Representation—

Scalable vector-quantized variational autoencoder with published weights.

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Poolside

2 release groups
Coding models designed for software engineering and agentic development workloads.
Poolside
OpenMDW 1.1

Laguna S 2.1

💻Coding / Agents118B / ~8B active

Coding model; official optimized weight formats grouped. Poolside refreshed and superseded the FP8 and NVFP4 checkpoints in August 2026; this remains one release group.

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Poolside
OpenMDW 1.1

Laguna XS 2.1

💻Coding / Agents—

Coding model; official FP8/INT4/NVFP4/GGUF/MLX variants grouped.

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Turen Labs

1 release group
Security models for AI-agent skill and package analysis.
Turen Labs
OpenMDW 1.1

Vigil

🛡️AI Agent Security / Malware Detection~263 KB ONNX

Compact ONNX classifier for scanning AI-agent skill packages for credential theft, data exfiltration, unsafe execution, persistence and related malicious behavior.

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Uniphore

1 release group
Multimodal computer-use models for GUI and web-agent tasks.
Uniphore
OpenMDW 1.0

ActIO-UI

🤖Computer Use / Agents7B

SFT and RLVR upstream releases for multimodal GUI / web agents.

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University of Luxembourg

1 release group
Luxembourgish speech-recognition models built on the Whisper family.
University of Luxembourg
OpenMDW 1.0

LuxASR Whisper

🎤Speech Recognition39M–764M

Luxembourgish Whisper Tiny, Base, Small and Medium open-weight releases grouped as one model family.

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Yanolja NEXT

1 release group
Multilingual translation models derived from the Seed-X family.
Yanolja NEXT
OpenMDW 1.0

EEVE-Rosetta 7B

🧠Translation7B

Structured multilingual translation derivative of Seed-X-PPO-7B; official FP8 release grouped.

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How this index counts models

There is no universal definition of a distinct AI model. This index counts upstream model and release groups: meaningfully distinct official releases from the original publisher. Official precision or packaging variants of the same underlying trained model are generally grouped together.

Community mirrors, third-party quantizations, and format conversions are excluded. Inclusion requires public model weights or checkpoints licensed under OpenMDW.

Entries are grouped alphabetically by publishing organization, then by model family or name. License version is metadata, not a ranking or sort order. Model licensing and repository metadata can change; canonical upstream repositories remain the source of truth.

OpenMDW 1.0: 9 groupsOpenMDW 1.1: 39 groupsLast reviewed: August 28, 2026