# Nemotron Ultra 253B vs Phi-4-reasoning

> Side-by-side benchmark comparison for Nemotron Ultra 253B and Phi-4-reasoning across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/nemotron-ultra-253b-vs-phi-4-reasoning
- Last updated: October 14, 2026

- Shared sourced benchmarks: 4
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Pick Nemotron Ultra 253B if you want the stronger benchmark profile. Phi-4-reasoning only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Nemotron Ultra 253B leads overall 63 to 49.
- The biggest single benchmark swing is LiveCodeBench in Coding, with scores of 66.3% and 53.8%.

## Model Snapshot

| Property | Nemotron Ultra 253B | Phi-4-reasoning |
|----------|----------|----------|
| Creator | NVIDIA | Microsoft |
| Type | Open Weight | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 32K | 32K |
| Overall Score | null | null |
| Benchmarks Covered | 5 | 6 |
| Pricing (input/output) | $0.00 / $0.00 | N/A |

## Category Breakdown

### Coding

- Winner: Not comparable
- Nemotron Ultra 253B public-lane score: Coming soon
- Phi-4-reasoning public-lane score: Coming soon

| Benchmark | Nemotron Ultra 253B | Phi-4-reasoning | Winner |
|-----------|-----------|-----------|--------|
| LiveCodeBench | 66.3% | 53.8% | Nemotron Ultra 253B |

### Knowledge

- Winner: Not comparable
- Nemotron Ultra 253B public-lane score: Coming soon
- Phi-4-reasoning public-lane score: Coming soon

| Benchmark | Nemotron Ultra 253B | Phi-4-reasoning | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 76.0% | 65.8% | Nemotron Ultra 253B |
| MMLU-Pro | Coming soon | 74.3% | Coming soon |

### Instruction Following

- Winner: Not comparable
- Nemotron Ultra 253B public-lane score: 0 (#127/128)
- Phi-4-reasoning public-lane score: Coming soon

| Benchmark | Nemotron Ultra 253B | Phi-4-reasoning | Winner |
|-----------|-----------|-----------|--------|
| IFEval | 89.5% | 83.4% | Nemotron Ultra 253B |

### Mathematics

- Winner: Not comparable
- Nemotron Ultra 253B public-lane score: Coming soon
- Phi-4-reasoning public-lane score: Coming soon

| Benchmark | Nemotron Ultra 253B | Phi-4-reasoning | Winner |
|-----------|-----------|-----------|--------|
| AIME 2025 | 72.5% | 62.9% | Nemotron Ultra 253B |
| MATH-500 | 97% | Coming soon | Coming soon |
| AIME 2024 | Coming soon | 75.3% | Coming soon |

## FAQ

### Which is better overall, Nemotron Ultra 253B or Phi-4-reasoning?

Nemotron Ultra 253B is ahead overall on BenchLM right now.

### How many benchmarks does Nemotron Ultra 253B cover on BenchLM?

Nemotron Ultra 253B currently has 5 sourced benchmark scores on BenchLM.

### How many benchmarks does Phi-4-reasoning cover on BenchLM?

Phi-4-reasoning currently has 6 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Nemotron Ultra 253B vs Phi-4-reasoning-plus](/compare/nemotron-ultra-253b-vs-phi-4-reasoning-plus)
- [Phi-4-reasoning vs Phi-4-reasoning-plus](/compare/phi-4-reasoning-vs-phi-4-reasoning-plus)
- [Nemotron Ultra 253B vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-nemotron-ultra-253b)
- [Phi-4-reasoning vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-phi-4-reasoning)

## Explore More

- [Nemotron Ultra 253B profile](/models/nemotron-ultra-253b)
- [Phi-4-reasoning profile](/models/phi-4-reasoning)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)