name = "Nemotron 3 Ultra 550B A55B"
description = "Largest Nemotron 3 model for maximum open-weight reasoning and agent accuracy"
family = "nemotron"
release_date = "2026-06-04"
last_updated = "2026-06-04"
attachment = false
reasoning = true
temperature = true
tool_call = true
open_weights = true

[limit]
context = 1_000_000
output = 128_000

[modalities]
input = ["text"]
output = ["text"]

[[benchmarks]]
name = "SWE-Bench Verified"
score = 70.7
metric = "resolved"
source = "https://huggingface.co/nvidia/NVIDIA-Nemotron-3-Ultra-550B-A55B-BF16"
date = "2026-06-04"

[[benchmarks]]
name = "SWE-Bench Multilingual"
score = 67.7
metric = "resolve rate"
source = "https://huggingface.co/nvidia/NVIDIA-Nemotron-3-Ultra-550B-A55B-BF16"
date = "2026-06-04"

[[benchmarks]]
name = "Terminal-Bench"
score = 56.4
metric = "success rate"
version = "2.1"
source = "https://huggingface.co/nvidia/NVIDIA-Nemotron-3-Ultra-550B-A55B-BF16"
date = "2026-06-04"

[[benchmarks]]
name = "GPQA"
score = 87.0
metric = "accuracy"
variant = "no tools"
source = "https://huggingface.co/nvidia/NVIDIA-Nemotron-3-Ultra-550B-A55B-BF16"
date = "2026-06-04"

[[benchmarks]]
name = "Humanity's Last Exam"
score = 26.7
metric = "accuracy"
variant = "no tools"
source = "https://huggingface.co/nvidia/NVIDIA-Nemotron-3-Ultra-550B-A55B-BF16"
date = "2026-06-04"

[[benchmarks]]
name = "Humanity's Last Exam"
score = 37.4
metric = "accuracy"
variant = "with tools"
source = "https://huggingface.co/nvidia/NVIDIA-Nemotron-3-Ultra-550B-A55B-BF16"
date = "2026-06-04"

[[benchmarks]]
name = "LiveCodeBench"
score = 89.0
metric = "pass@1"
version = "v6"
source = "https://huggingface.co/nvidia/NVIDIA-Nemotron-3-Ultra-550B-A55B-BF16"
date = "2026-06-04"

[[benchmarks]]
name = "MMLU-Pro"
score = 86.8
metric = "accuracy"
source = "https://huggingface.co/nvidia/NVIDIA-Nemotron-3-Ultra-550B-A55B-BF16"
date = "2026-06-04"

[[benchmarks]]
name = "BrowseComp"
score = 44.4
metric = "accuracy"
source = "https://huggingface.co/nvidia/NVIDIA-Nemotron-3-Ultra-550B-A55B-BF16"
date = "2026-06-04"

[[benchmarks]]
name = "IFBench"
score = 81.7
metric = "accuracy"
variant = "prompt loose"
source = "https://huggingface.co/nvidia/NVIDIA-Nemotron-3-Ultra-550B-A55B-BF16"
date = "2026-06-04"

[[benchmarks]]
name = "GDPval"
score = 46.7
metric = "wins or ties"
source = "https://huggingface.co/nvidia/NVIDIA-Nemotron-3-Ultra-550B-A55B-BF16"
date = "2026-06-04"