# Nemotron 3 Ultra

Nemotron 3 Ultra is an AI model released by NVIDIA on Jun 4 2026. It has 550B parameters and open source. At release it scored 86.7% on GPQA Diamond and 48 on AA Intelligence Index.

## Facts

| Field | Value |
| --- | --- |
| Model | Nemotron 3 Ultra |
| Developer | NVIDIA |
| Release date | Thursday, Jun 4 2026 |
| Licensing | Open Source |
| Parameters | 550B |

## Benchmark scores published at release

| Benchmark | Score | Source | What it measures |
| --- | --- | --- | --- |
| GPQA Diamond | 86.7% | Lab | Graduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. |
| AA Intelligence Index | 48 | Lab | Artificial Analysis composite intelligence index across evals |

## About Nemotron 3 Ultra

Nemotron 3 Ultra, announced at Computex on June 1, 2026 and released with weights on June 4, was NVIDIA's largest published model: 550 billion total parameters with 55 billion active, in the same hybrid Mamba-Transformer mixture-of-experts architecture as its smaller siblings. It completed the Nano/Super/Ultra ladder the company had laid out when the generation opened the previous December.

At release it scored 48 on the Artificial Analysis Intelligence Index — the highest of any US-developed open-weight model at the time, well clear of the previous US leader Gemma 4 31B at 39, though still behind the strongest Chinese open flagships on the same index — alongside 86.7% on GPQA Diamond. NVIDIA leaned on the efficiency argument it had built the family around: over 300 tokens per second on its own hardware and markedly lower per-task cost than the open models above it on the leaderboard.

## Questions and answers

### When was Nemotron 3 Ultra released?

Nemotron 3 Ultra was released by NVIDIA on Thursday, Jun 4 2026.

### Who made Nemotron 3 Ultra?

Nemotron 3 Ultra was built by NVIDIA. The dominant AI chipmaker, publishing the open Nemotron model family. Ships weights, datasets and training recipes to seed demand for its hardware rather than to sell a chatbot.

### What benchmark scores did Nemotron 3 Ultra get?

Nemotron 3 Ultra reports 2 tracked benchmark scores — GPQA Diamond: 86.7%; AA Intelligence Index: 48. Scores are the figures published at release by NVIDIA.

### How many parameters does Nemotron 3 Ultra have?

Nemotron 3 Ultra is reported at 550B parameters.

### Is Nemotron 3 Ultra open source?

Yes. Nemotron 3 Ultra is open source: the model weights are published together with training code and data under an open license, so it can be downloaded, self-hosted, fine-tuned, and in principle reproduced from scratch.

### What came before and after Nemotron 3 Ultra?

NVIDIA's previous tracked release was Nemotron 3 Super on Mar 11 2026, 85 days earlier. It was followed by Nemotron 3.5 Lightning on Aug 11 2026.


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Canonical page: https://aireleasetracker.com/model/nvidia/nemotron-3-ultra
Full dataset: https://aireleasetracker.com/llms-full.txt · JSON: https://aireleasetracker.com/models.json
Source: AI Release Tracker (https://aireleasetracker.com). Benchmark scores are the figures published by the releasing lab at launch.