Data points: 81
The readout for GPT-5.4 and Nemotron 3 Ultra, before the detailed comparison sheet.
Decision read
GPT-5.4
GPT-5.4 currently has the stronger profile, with verified wins split 4 to 0.
Evidence depth
81 data points
Includes 9 benchmark rows, 0 audit samples, and 7 provider examples.
Selection signal
Start with GPT-5.4
The charts below split 16 high-signal samples across speed, scores, and audit health.
Switch either side of this report to compare another model with the same LMSpeed data pipeline.
Select a different model to open a new comparison URL.
Model compare GPT-5.4 vs Nemotron 3 Ultragpt-5-4-vs-nemotron-3-ultra-550b-a55b | Model A GPT-5.4 | Model B Nemotron 3 Ultra |
|---|---|---|
| Overall leader | Leading | Contender |
| Verified metric wins | 4 wins | 0 wins |
| Where it leads | Cheapest input price, Free providers, Provider coverage, Recent tests |
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
Compare benchmark category scores on a 0-100 scale. Select a category to inspect the gap.
Avg. score
GPT-5.4
63.6
Avg. score
Nemotron 3 Ultra
48.3
Selected category
Coding
GPT-5.4 leads by 26.4
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
GPT-5.4
106.7 tok/s
Rank #47/113 · confidence 4
Nemotron 3 Ultra
winner179.1 tok/s
Rank #19/113 · confidence 4
GPT-5.4
winner0.69 s
Rank #19/113 · confidence 4
Nemotron 3 Ultra
13.63 s
Rank #69/113 · confidence 4
GPT-5.4
winner0.69 s
Rank #24/113 · confidence 4
Nemotron 3 Ultra
0.92 s
Rank #36/113 · confidence 4
GPT-5.4
$15.00/M
Rank #116/138 · confidence 4
Nemotron 3 Ultra
winner$2.67/M
Rank #69/138 · confidence 4
GPT-5.4
$5.63/M
Rank #116/138 · confidence 4
Nemotron 3 Ultra
winner$1.18/M
Rank #73/138 · confidence 4
GPT-5.4
$2.50/M
Rank #114/138 · confidence 4
Nemotron 3 Ultra
winner$0.675/M
Rank #76/138 · confidence 4
GPT-5.4
74.8%
Rank #75/152 · confidence 4
Nemotron 3 Ultra
winner86.7%
Rank #22/152 · confidence 4
GPT-5.4
10.6%
Rank #68/150 · confidence 4
Nemotron 3 Ultra
winner26.6%
Rank #24/150 · confidence 4
GPT-5.4
winner47.1%
Rank #13/149 · confidence 4
Nemotron 3 Ultra
39.9%
Rank #53/149 · confidence 4
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | GPT-5.4 | Nemotron 3 Ultra |
|---|---|---|
| No completed audits are available from shared providers yet. | ||
Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.
| Provider | GPT-5.4 | Nemotron 3 Ultra |
|---|---|---|
15 tests | GPT-5.4 gpt-5.4 speed / latency 41 tok/s / 6581ms input / output $0.342/M / $2.05/M |
This report only uses LMSpeed data for GPT-5.4 and Nemotron 3 Ultra: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | GPT-5.4 | Nemotron 3 Ultra |
|---|---|---|
| When to choose each model | GPT-5.4 GPT-5.4 is stronger when you prioritize Cheapest input price, Free providers, Provider coverage, Recent tests. | Nemotron 3 Ultra Nemotron 3 Ultra does not clearly lead on the verified metrics here, so check provider-specific pricing before choosing. |
TL;DR: GPT-5.4 leads across 81 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from GPT-5.4 vs Nemotron 3 Ultra into nearby model comparisons with enough verified LMSpeed data.
| No data |
| Model metadata | GPT-5.4 exposes 1.1M tokens; notable signals: Text input, Image input, File input, Text output. | Nemotron 3 Ultra exposes 1M tokens; notable signals: Text input, Text output, Tool calling, Structured outputs. |
|---|---|---|
| Developer | OpenAI | NVIDIA |
| Context window | 1.1M tokens | 1M tokens |
| Max output | 128K tokens | 16.4K tokens |
| Released | Mar 2026 | No data |
| Modalities | Input TextImageFile Output Text | Input Text Output Text |
| Features | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning | Text inputText outputTool callingStructured outputsJSON modeReasoning |
| Parameters | No data | 550B / 55B active |
| Tokenizer | GPT | Other |
| Knowledge cutoff | No data | No data |
| OpenRouter ID | openai/gpt-5.4 | nvidia/nemotron-3-ultra-550b-a55b |
| References | No data | No data |
Nemotron 3 Ultra
nvidia/nemotron-3-ultra-550b-a55b
speed / latency
N/A / N/A
input / output
$10.27/M / $10.27/M
WSocket AI5 tests | GPT-5.4 speed / latency 36 tok/s / 12157ms input / output No data | Nemotron 3 Ultra speed / latency N/A / N/A input / output No data |
|---|
Yunchu API5 tests | GPT-5.4 speed / latency 47 tok/s / 2733ms input / output No data | Nemotron 3 Ultra speed / latency N/A / N/A input / output No data |
|---|
小水管 API5 tests | GPT-5.4 speed / latency 44 tok/s / 2518ms input / output No data | Nemotron 3 Ultra speed / latency N/A / N/A input / output No data |
|---|
ChooseC API0 tests | GPT-5.4 speed / latency N/A / N/A input / output No data | Nemotron 3 Ultra speed / latency N/A / N/A input / output No data |
|---|
GPT-5.4 gpt-5.4-openai-compact speed / latency No data input / output $0.250/M / $0.250/M | Nemotron 3 Ultra nemotron-3-ultra-550b-a55b speed / latency No data input / output $75.00/M / $75.00/M |
GPT-5.4 gpt-5.4 speed / latency No data input / output $2.50/M / $15.00/M | Nemotron 3 Ultra nvidia/nemotron-3-ultra-550b-a55b speed / latency No data input / output $0.500/M / $2.50/M |
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
