NVIDIA: Nemotron 3 Ultra

nvidia/nemotron-3-ultra-550b-a55b

Last Observed: 2026-10-15 06:04:18.064414 UTC

NVIDIA Nemotron 3 Ultra is an open frontier-reasoning and orchestration model from NVIDIA, with 55B active parameters out of 550B total (MoE). Built on a hybrid Transformer-Mamba mixture-of-experts architecture, it...

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Architecture And Modalities · 2

Architecture · Modality API Details /architecture/modality text->text	text->text
Architecture · Tokenizer API Details /architecture/tokenizer Other	Other

Catalog Identity And Metadata · 36

Context Tokens API Details /context_length 262144	262,144
Created API Details /created 1780551208	2026-06-04 05:33:28 UTC
Description API Details /description NVIDIA Nemotron 3 Ultra is an open frontier-reasoning and orchestration model from NVIDIA, with 55B active parameters out of 550B total (MoE). Built on a hybrid Transformer-Mamba mixture-of-experts architecture, it...	NVIDIA Nemotron 3 Ultra is an open frontier-reasoning and orchestration model from NVIDIA, with 55B active parameters out of 550B total (MoE). Built on a hybrid Transformer-Mamba mixture-of-experts architecture, it...
Enkrypt · Bias Score API Details /enkrypt/bias_score 87.34	87.34
Enkrypt · Cbrn Score API Details /enkrypt/cbrn_score 52.67	52.67
Enkrypt · Evaluated At API Details /enkrypt/evaluatedAt Explicit Null	Explicit Null
Enkrypt · Evasion Score API Details /enkrypt/evasion_score Explicit Null	Explicit Null
Enkrypt · Freshness API Details /enkrypt/freshness fresh	fresh
Enkrypt · Harmful Score API Details /enkrypt/harmful_score 9.44	9.44
Enkrypt · Ingested At API Details /enkrypt/ingestedAt 2026-09-29T04:00:25.155Z	2026-09-29T04:00:25.155Z
Enkrypt · Insecure Code Score API Details /enkrypt/insecure_code_score 6.22	6.22
Enkrypt · Jailbreak Score API Details /enkrypt/jailbreak_score 27.1942	27.1942
Enkrypt · Last Checked At API Details /enkrypt/lastCheckedAt 2026-10-15T04:00:26.298Z	2026-10-15T04:00:26.298Z
Enkrypt · Model Name API Details /enkrypt/model_name nemotron-3-ultra-550b-a55b	nemotron-3-ultra-550b-a55b
Enkrypt · Nist Score API Details /enkrypt/nist_score 32	32
Enkrypt · Owasp Score API Details /enkrypt/owasp_score 35	35
Enkrypt · Provider API Details /enkrypt/provider openai_compatible	openai_compatible
Enkrypt · Risk Score API Details /enkrypt/risk_score 32.0435	32.0435
Enkrypt · Robustness Score API Details /enkrypt/robustness_score Explicit Null	Explicit Null
Enkrypt · Safety Score API Details /enkrypt/safety_score 41.7803	41.7803
Enkrypt · Source API Details /enkrypt/source nvidia	nvidia
Enkrypt · Stale After API Details /enkrypt/staleAfter 2026-10-16T06:00:26.298Z	2026-10-16T06:00:26.298Z
Enkrypt · Toxicity Score API Details /enkrypt/toxicity_score 4.55	4.55
Expiration Date API Details /expiration_date Explicit Null	Explicit Null
Id API Details /id nvidia/nemotron-3-ultra-550b-a55b	nvidia/nemotron-3-ultra-550b-a55b
Is Free API Details /isFree False	False
May Train On Your Prompts API Details /mayTrainOnYourPrompts False	False
Name API Details /name NVIDIA: Nemotron 3 Ultra	NVIDIA: Nemotron 3 Ultra
Opencode · Variants · High · Reasoning · Effort API Details /opencode/variants/high/reasoning/effort high	high
Opencode · Variants · High · Reasoning · Enabled API Details /opencode/variants/high/reasoning/enabled True	True
Opencode · Variants · Medium · Reasoning · Effort API Details /opencode/variants/medium/reasoning/effort medium	medium
Opencode · Variants · Medium · Reasoning · Enabled API Details /opencode/variants/medium/reasoning/enabled True	True
Opencode · Variants · None · Reasoning · Effort API Details /opencode/variants/none/reasoning/effort none	none
Opencode · Variants · None · Reasoning · Enabled API Details /opencode/variants/none/reasoning/enabled False	False
Terminal Bench · Avg Attempt Cost Usd API Details /terminalBench/avgAttemptCostUsd 101.8186902	101.8186902
Terminal Bench · Overall Score API Details /terminalBench/overallScore 0.19101124	0.19101124

Request Limits · 1

Per Request Limits API Details /per_request_limits Explicit Null	Explicit Null

Pricing · 4

Output Price · USD/Token API Details /pricing/completion 0.0000022	0.0000022
Pricing · Discount API Details /pricing/discount 0	0
Pricing · Input Cache Read API Details /pricing/input_cache_read 0.0000001	0.0000001
Input Price · USD/Token API Details /pricing/prompt 0.0000005	0.0000005

Provider Limits · 3

Top Provider · Context Length API Details /top_provider/context_length 202800	202,800
Top Provider · Is Moderated API Details /top_provider/is_moderated False	False
Top Provider · Max Completion Tokens API Details /top_provider/max_completion_tokens 182520	182,520

API Structure And Container Types

Architecture API Details /architecture Object · See Fields	Object · See Fields
Architecture · Input Modalities API Details /architecture/input_modalities Array · See Items	Array · See Items
Architecture · Output Modalities API Details /architecture/output_modalities Array · See Items	Array · See Items
Enkrypt API Details /enkrypt Object · See Fields	Object · See Fields
Opencode API Details /opencode Object · See Fields	Object · See Fields
Opencode · Variants API Details /opencode/variants Object · See Fields	Object · See Fields
Opencode · Variants · High API Details /opencode/variants/high Object · See Fields	Object · See Fields
Opencode · Variants · High · Reasoning API Details /opencode/variants/high/reasoning Object · See Fields	Object · See Fields
Opencode · Variants · Medium API Details /opencode/variants/medium Object · See Fields	Object · See Fields
Opencode · Variants · Medium · Reasoning API Details /opencode/variants/medium/reasoning Object · See Fields	Object · See Fields
Opencode · Variants · None API Details /opencode/variants/none Object · See Fields	Object · See Fields
Opencode · Variants · None · Reasoning API Details /opencode/variants/none/reasoning Object · See Fields	Object · See Fields
Pricing API Details /pricing Object · See Fields	Object · See Fields
Supported Parameters API Details /supported_parameters Array · See Items	Array · See Items
Terminal Bench API Details /terminalBench Object · See Fields	Object · See Fields
Top Provider API Details /top_provider Object · See Fields	Object · See Fields

Architecture · Input Modalities

1 items · source order preserved

text

API Details

Item	/architecture/input_modalities/*
1	text

Architecture · Output Modalities

1 items · source order preserved

text

API Details

Item	/architecture/output_modalities/*
1	text

Supported Parameters

18 items · source order preserved

frequency_penalty
include_reasoning
logit_bias
max_tokens
min_p
presence_penalty
reasoning
reasoning_effort
repetition_penalty
response_format
seed
stop
structured_outputs
temperature
tool_choice
tools
top_k
top_p

API Details

Item	/supported_parameters/*
1	frequency_penalty
2	include_reasoning
3	logit_bias
4	max_tokens
5	min_p
6	presence_penalty
7	reasoning
8	reasoning_effort
9	repetition_penalty
10	response_format
11	seed
12	stop
13	structured_outputs
14	temperature
15	tool_choice
16	tools
17	top_k
18	top_p

Recorded Value History

Historical API Field

Input Price · USD/Token

4 of 4 records plotted · 0 excluded for missing or invalid coordinates.

Up to 100 recorded versions, spaced by observation order rather than elapsed time. Array fields use the minimum numeric item in each version. Missing values are omitted. Select a point to open its archived snapshot; comparison actions use the current listing. History begins at the first recorded baseline.

Axis Scale

Select a point to open its listing or add it to compare.

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