Model Comparison
Llama 3.1 Nemotron Ultra 253B v1 (Reasoning)
vs. Claude Opus 5 (Adaptive Reasoning, Xhigh Effort)
Comparing 2 AI models · 0 benchmarks · NVIDIA, Anthropic
Recommended Pick
NVLlama 3.1 Nemotron Ultra 253B v1 (Reasoning)6 metric winsStrongest on: Value, Input price, Output price
Best Value
Llama 3.1 Nemotron Ultra 253B v1 (Reasoning)
100.0 value score
8.9 reasoning / $0.90/1M
Lowest Price
Llama 3.1 Nemotron Ultra 253B v1 (Reasoning)
$0.60/1M input price
Best Reasoning
Claude Opus 5 (Adaptive Reasoning, Xhigh Effort)
62.5 reasoning score
Blends available reasoning benchmarks
Best for Coding
Claude Opus 5 (Adaptive Reasoning, Xhigh Effort)
77.0 coding index
Differences That Matter
Best value
Llama 3.1 Nemotron Ultra 253B v1 (Reasoning) has the strongest quality-to-price mix at 100.0 out of 100 value points.
Price gap
Llama 3.1 Nemotron Ultra 253B v1 (Reasoning) is 8.3x cheaper on input tokens than Claude Opus 5 (Adaptive Reasoning, Xhigh Effort).
Reasoning gap
Claude Opus 5 (Adaptive Reasoning, Xhigh Effort) leads Llama 3.1 Nemotron Ultra 253B v1 (Reasoning) by 53.6 points on reasoning.
Top-pick rationale
Llama 3.1 Nemotron Ultra 253B v1 (Reasoning) wins 6 measurable categories, including Value, Input price, Output price, Blended price.
Response Face-Off
Run one prompt through the selected models and compare response quality with live speed and cost context.
Llama 3.1 Nemotron Ultra 253B v1 (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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Claude Opus 5 (Adaptive Reasoning, Xhigh Effort)
Anthropic
TTFT
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Time
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tok/s
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Cost
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Which answer was more useful?
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Full Comparison
| Metric | Top Pick NV Llama 3.1 Nemotron Ultra 253B v1 (Reasoning) | An Claude Opus 5 (Adaptive Reasoning, Xhigh Effort) |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $0.60/1M | $5.00/1M |
| Output Cost | $1.80/1M | $25.00/1M |
| Blended (3:1) | $0.90/1M | $10.00/1M |
| Specifications | ||
| Organization | NVIDIA | Anthropic |
| Release Date | Apr 7, 2025 | Jul 24, 2026 |
| Performance & Speed | ||
| Throughput | 52.4 tok/s | 52.0 tok/s |
| TTFT | 2380ms | 32920ms |
| Latency | 40540ms | 32920ms |
| Composite Indices | ||
| Value Score | 100.0 | 63.2 |
| Reasoning Score | 8.9 | 62.5 |
| Intelligence | 8.9 | 62.5 |
| Coding | — | 77.0 |
Key Takeaways
Llama 3.1 Nemotron Ultra 253B v1 (Reasoning) offers the best value at $0.60/1M,making it ideal for high-volume applications and cost-conscious projects.
Claude Opus 5 (Adaptive Reasoning, Xhigh Effort) has the strongest reasoning profile with a 62.5 reasoning score,combining the available reasoning-heavy benchmarks.
Claude Opus 5 (Adaptive Reasoning, Xhigh Effort) reaches a 77.0 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
Llama 3.1 Nemotron Ultra 253B v1 (Reasoning)
- Cost-sensitive applications
- High-volume processing
Claude Opus 5 (Adaptive Reasoning, Xhigh Effort)
- Complex reasoning tasks
- Research & analysis
- Code generation
- Software development
