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 7 tracked benchmark scores — BullshitBench v2: 49%; SWE-Bench Verified: 71.9%; Terminal-Bench 2.1: 56.4%; BrowseComp: 44.4%; Humanity's Last Exam (with tools): 26.7%; GPQA Diamond: 86.7%; AA Intelligence Index: 48. Tracked scores may come from lab reports or independent benchmarks; source details accompany the benchmark data.

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.

Nemotron 3 UltraOpen Source

Released Jun 4 2026

Nemotron 3 Ultra is an AI model released by NVIDIA on Thursday, Jun 4 2026, 85 days after Nemotron 3 Super. It is an open-source model — weights, and training code/data, released under an open license. It is a 550B parameter model. Benchmark results (shown below) cover BullshitBench v2, SWE-Bench Verified, Terminal-Bench 2.1, BrowseComp, Humanity's Last Exam, GPQA Diamond, and 1 more.

Available from


DeepInfra	$0.50	$2.20	256K	fp4
BaseTen	$0.60	$2.40	200K	fp4
Venice	$0.625	$3.125	256K	fp8

USD per 1M tokens

Benchmarks

Coding

SWE-Bench Verifiedvia BenchLM

71.9%

#36 of 57

Terminal & CLI

Terminal-Bench 2.1via BenchLM

56.4%

#30 of 32

Agentic & tool use

BrowseCompvia BenchLM

44.4%

#28 of 28

Reasoning & science

Humanity's Last Examvia BenchLM

26.7%with tools

#43 of 46

GPQA Diamond

86.7%

#26 of 59

Knowledge work

AA Intelligence Index

#5 of 6

Robustness

BullshitBench v2

49%

#37 of 94

Source: BenchLM, retrieved 28 September 2026. Other sources are identified on the linked benchmark pages.

Compare Nemotron 3 Ultra with

Nemotron 3 Ultra

Suggested comparisons

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About

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.

Frequently asked questions

: Nemotron 3 Ultra was released by NVIDIA on Thursday, Jun 4 2026.
: 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.
: Nemotron 3 Ultra reports 7 tracked benchmark scores — BullshitBench v2: 49%; SWE-Bench Verified: 71.9%; Terminal-Bench 2.1: 56.4%; BrowseComp: 44.4%; Humanity's Last Exam (with tools): 26.7%; GPQA Diamond: 86.7%; AA Intelligence Index: 48. Tracked scores may come from lab reports or independent benchmarks; source details accompany the benchmark data.
: Nemotron 3 Ultra is reported at 550B parameters.
: 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.
: 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.