Model Comparison
GPT-5 (high)
vs. Nemotron 3 Ultra 550B A55B (Reasoning)
Comparing 2 AI models · 12 benchmarks · OpenAI, NVIDIA
Recommended Pick
NV Nemotron 3 Ultra 550B A55B (Reasoning) 13 metric wins Strongest on: Value, Input price, Output price
Best Value
Nemotron 3 Ultra 550B A55B (Reasoning)
100.0 value score
53.7 reasoning / $1.10/1M
Lowest Price
Nemotron 3 Ultra 550B A55B (Reasoning)
$0.60/1M input price
Best Reasoning
GPT-5 (high)
77.2 reasoning score
Blends available reasoning benchmarks
Best for Coding
Nemotron 3 Ultra 550B A55B (Reasoning)
37.6 coding index
Composite Indices
Higher is better; speed and price are normalized
Standard Benchmarks
Only benchmarks with data are shown
Differences That Matter
Best value
Nemotron 3 Ultra 550B A55B (Reasoning) has the strongest quality-to-price mix at 100.0 out of 100 value points.
Price gap
Nemotron 3 Ultra 550B A55B (Reasoning) is 2.1x cheaper on input tokens than GPT-5 (high).
Speed gap
Nemotron 3 Ultra 550B A55B (Reasoning) generates about 1.5x as many tokens per second as GPT-5 (high).
Reasoning gap
GPT-5 (high) leads Nemotron 3 Ultra 550B A55B (Reasoning) by 23.5 points on reasoning.
Coding gap
Nemotron 3 Ultra 550B A55B (Reasoning) leads GPT-5 (high) by 1.6 points on coding.
Response Face-Off
Run one prompt through the selected models and compare response quality with live speed and cost context.
GPT-5 (high)
OpenAI
TTFT
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Time
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tok/s
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Tokens
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Cost
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Nemotron 3 Ultra 550B A55B (Reasoning)
NVIDIA
TTFT
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Time
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tok/s
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Tokens
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Cost
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Which answer was more useful?
Full Comparison
| Metric | Op GPT-5 (high) | Top Pick NV Nemotron 3 Ultra 550B A55B (Reasoning) |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $1.25/1M | $0.60/1M |
| Output Cost | $10.00/1M | $2.60/1M |
| Blended (3:1) | $3.44/1M | $1.10/1M |
| Specifications | ||
| Organization | OpenAI | NVIDIA |
| Release Date | Aug 7, 2025 | Jun 4, 2026 |
| Performance & Speed | ||
| Throughput | 101.9 tok/s | 152.6 tok/s |
| TTFT | 84283ms | 673ms |
| Latency | 84283ms | 15577ms |
| Composite Indices | ||
| Value Score | 46.0 | 100.0 |
| Reasoning Score | 77.2 | 53.7 |
| Intelligence | 44.6 | 47.7 |
| Coding | 36.0 | 37.6 |
| Math | 94.3 | — |
| Standard Benchmarks | ||
| GPQA | 85.4% | 86.7% |
| MMLU Pro | 87.1% | — |
| HLE | 26.5% | 26.6% |
| LiveCodeBench | 84.6% | — |
| MATH 500 | 99.4% | — |
| AIME 2025 | 94.3% | — |
| AIME (Original) | 95.7% | — |
| SciCode | 42.9% | 39.9% |
| LCR | 75.6% | 67.0% |
| IFBench | 73.1% | 81.4% |
| TAU-bench v2 | 84.8% | 83.3% |
| TerminalBench Hard | 32.6% | 36.4% |
Key Takeaways
Nemotron 3 Ultra 550B A55B (Reasoning) offers the best value at $0.60/1M, making it ideal for high-volume applications and cost-conscious projects.
GPT-5 (high) has the strongest reasoning profile with a 77.2 reasoning score, combining the available reasoning-heavy benchmarks.
Nemotron 3 Ultra 550B A55B (Reasoning) reaches a 37.6 coding index, making it the top choice for software development and code generation tasks.
All models support context windows of ∞+ tokens, suitable for processing lengthy documents and maintaining extended conversations.
When to Choose Each Model
GPT-5 (high)
- Complex reasoning tasks
- Research & analysis
Nemotron 3 Ultra 550B A55B (Reasoning)
- Cost-sensitive applications
- High-volume processing
- Code generation
- Software development
