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Model comparison

GPT-5.4 Pro vs Nemotron 3 Ultra

Data verified

Head-to-head evidence from 4 shared benchmark results across 3 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.

60.89/100
No comparison
N/A
3 category wins0 category wins

Public leaderboard positions: GPT-5.4 Pro #44 (Estimated); Nemotron 3 Ultra unranked (Not scored). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.

Evidence parity. GPT-5.4 Pro and Nemotron 3 Ultra share 4 comparable benchmark results. 3 of 8 categories are comparable. 8 results are unique to GPT-5.4 Pro; 34 to Nemotron 3 Ultra.

Updated July 23, 2026
Shared results
4
GPT-5.4 Pro only
8
Nemotron 3 Ultra only
34
Comparable categories
3 / 8

Treat this as a split decision. GPT-5.4 Pro makes more sense if agentic is the priority or you need the larger 1.05M context window; Nemotron 3 Ultra is the better fit if you want the cheaper token bill.

Confidence note. This is a partial-evidence comparison with 4 shared benchmark results across 3 evidence categories; 3 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.

Why this result

GPT-5.4 Pro and Nemotron 3 Ultra finish on the same BenchAlign overall score, so this is less about a single winner and more about where the edge shows up. The BenchAlign headline says tie; the benchmark table is where the real choice happens.

GPT-5.4 Pro is also the more expensive model on tokens at $30.00 input / $180.00 output per 1M tokens, versus $0.00 input / $0.00 output per 1M tokens for Nemotron 3 Ultra. That is roughly Infinityx on output cost alone. GPT-5.4 Pro gives you the larger context window at 1.05M, compared with 1M for Nemotron 3 Ultra.

Category breakdown

Exact category averages are shown below. Not measured means BenchLM does not have enough sourced public coverage for that model and category.

Category scores and score margins for GPT-5.4 Pro and Nemotron 3 Ultra
CategoryGPT-5.4 ProΔNemotron 3 Ultra
AgenticGPT-5.4 Pro89.3Margin← 38.0Nemotron 3 Ultra51.3
ReasoningGPT-5.4 Pro83.3Margin← 21.4Nemotron 3 Ultra61.9
KnowledgeGPT-5.4 Pro58.7Margin← 4.9Nemotron 3 Ultra53.8
CodingGPT-5.4 ProNot measuredMarginNo overlapNemotron 3 Ultra58.3
MathGPT-5.4 Pro46.9MarginNo overlapNemotron 3 UltraNot measured
MultilingualGPT-5.4 ProNot measuredMarginNo overlapNemotron 3 Ultra83.0
MultimodalGPT-5.4 Pro94.0MarginNo overlapNemotron 3 UltraNot measured
Inst. FollowingGPT-5.4 ProNot measuredMarginNo overlapNemotron 3 Ultra81.7

Decisive benchmark drivers

The largest measured benchmark gaps in this matchup, with exact reported values.

More
A · GPT-5.4 ProB · Nemotron 3 Ultra

  1. BrowseComp

    Agentic
    Source ↗
    A 89.3%B 44.4%
    Winner: GPT-5.4 ProΔ 44.9
    BrowseComp: GPT-5.4 Pro scored 89.3%; Nemotron 3 Ultra scored 44.4%. GPT-5.4 Pro wins this benchmark.

  2. HLE

    Knowledge
    Source ↗
    A 58.7%B 26.7%
    Winner: GPT-5.4 ProΔ 32
    HLE: GPT-5.4 Pro scored 58.7%; Nemotron 3 Ultra scored 26.7%. GPT-5.4 Pro wins this benchmark.

Operational comparison

Runtime and commercial metrics are compared only when both models have a complete sourced value.

MetricGPT-5.4 ProNemotron 3 UltraComparison
Input / output priceUSD per 1M tokensGPT-5.4 Pro$30 input / $180 outputNemotron 3 Ultra$0 input / $0 outputNemotron 3 Ultra has the lower combined listed price.
Generation speedtokens per secondGPT-5.4 Pro74 tok/sNemotron 3 UltraNot availableA complete speed comparison is not available.
First-answer latencyseconds to first tokenGPT-5.4 Pro151.79 sNemotron 3 UltraNot availableA complete latency comparison is not available.
Context windowmaximum listed tokensGPT-5.4 Pro1.05MNemotron 3 Ultra1MGPT-5.4 Pro lists the larger context window.

Benchmark Deep Dive

AgenticGPT-5.4 Pro wins
BenchmarkGPT-5.4 ProNemotron 3 UltraResult
BrowseCompSource 89.3%44.4%GPT-5.4 Pro leads
Terminal-Bench 2.0Source —56.4%Not comparable
PinchBenchSource —90.0%Not comparable
τ³-bench resultsSource —70.9%Not comparable
GDPval-AASource —33.2%Not comparable
HLE w/ toolsSource —37.4%Not comparable
AA Agentic IndexSource —27.4%Not comparable
τ²-bench resultsSource —83.3%Not comparable
GDPval-AASource —1164Not comparable
AA BriefcaseSource —870Not comparable
AA EnterpriseOps-GymSource —28.9%Not comparable
AA Harvey LABSource —81.7%Not comparable
terminalBenchHardSource —36.4%Not comparable
Coding
BenchmarkGPT-5.4 ProNemotron 3 UltraResult
SWE-bench VerifiedSource —71.9%Not comparable
SWE MultilingualSource —67.7%Not comparable
SciCodeSource —44.6%Not comparable
Terminal-Bench 2.0Source —56.4%Not comparable
AA Coding IndexSource —49.3%Not comparable
AA-SciCodeSource —39.9%Not comparable
ReasoningGPT-5.4 Pro wins
BenchmarkGPT-5.4 ProNemotron 3 UltraResult
ARC-AGI-2Source 83.3%—Not comparable
CritPtSource 30.0%3.1%GPT-5.4 Pro leads
AA-LCRSource —67.0%Not comparable
LongBench v2Source —61.9%Not comparable
KnowledgeGPT-5.4 Pro wins
BenchmarkGPT-5.4 ProNemotron 3 UltraResult
HLESource 58.7%26.7%GPT-5.4 Pro leads
FrontierScienceSource 36.7%—Not comparable
FrontierScience ResearchSource 36.7%—Not comparable
HLE w/o toolsSource 42.7%26.7%GPT-5.4 Pro leads
GPQASource —87%Not comparable
GPQA-DSource —87.0%Not comparable
MMLU-ProSource —86.8%Not comparable
AA-Omniscience AccuracySource —21.6%Not comparable
Artificial Analysis Intelligence IndexSource —37.8%Not comparable
AA-GPQA DiamondSource —86.7%Not comparable
AA-HLESource —26.6%Not comparable
AA-Omniscience IndexSource —-0.8%Not comparable
AA-Omniscience Hallucination RateSource —28.5%Not comparable
AA Openness IndexSource —83.3%Not comparable
Math
BenchmarkGPT-5.4 ProNemotron 3 UltraResult
IPhO 2025 (Theory)Source 93.5%—Not comparable
FrontierMath (legacy)Source 50%—Not comparable
FrontierMath v2 (Tiers 1-3)Source 50.000%—Not comparable
FrontierMath v2 (Tier 4)Source 37.500%—Not comparable
Multilingual
BenchmarkGPT-5.4 ProNemotron 3 UltraResult
MMLU-ProXSource —83%Not comparable
Multimodal
BenchmarkGPT-5.4 ProNemotron 3 UltraResult
MMMU-ProSource 94%—Not comparable
Design Arena WebsiteSource —1129Not comparable
Inst. Following
BenchmarkGPT-5.4 ProNemotron 3 UltraResult
IFBenchSource —81.7%Not comparable
AA-IFBenchSource —81.4%Not comparable
Frequently Asked Questions (4)

Which is better, GPT-5.4 Pro or Nemotron 3 Ultra?

GPT-5.4 Pro and Nemotron 3 Ultra are tied on the BenchAlign overall score, so the right pick depends on which category matters most for your use case.

Which is better for knowledge tasks, GPT-5.4 Pro or Nemotron 3 Ultra?

GPT-5.4 Pro has the edge for knowledge tasks in this comparison, averaging 58.7 versus 53.8. Inside this category, HLE is the benchmark that creates the most daylight between them.

Which is better for reasoning, GPT-5.4 Pro or Nemotron 3 Ultra?

GPT-5.4 Pro has the edge for reasoning in this comparison, averaging 83.3 versus 61.9. Inside this category, CritPt is the benchmark that creates the most daylight between them.

Which is better for agentic tasks, GPT-5.4 Pro or Nemotron 3 Ultra?

GPT-5.4 Pro has the edge for agentic tasks in this comparison, averaging 89.3 versus 51.3. Inside this category, BrowseComp is the benchmark that creates the most daylight between them.

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