# Grok 2 vs Nemotron Ultra 253B

> Side-by-side benchmark comparison for Grok 2 and Nemotron Ultra 253B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/grok-2-vs-nemotron-ultra-253b
- Last updated: October 14, 2026

- Shared sourced benchmarks: 1
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Evidence is too thin for a benchmark verdict: Grok 2 and Nemotron Ultra 253B share only 1 sourced benchmark row.

## Summary

- Only 1 shared sourced benchmark row is available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- Nemotron Ultra 253B has the larger published context window at 32K.

## Model Snapshot

| Property | Grok 2 | Nemotron Ultra 253B |
|----------|----------|----------|
| Creator | xAI | NVIDIA |
| Type | Proprietary | Open Weight |
| Reasoning | Non-Reasoning | Reasoning |
| Context | Unknown | 32K |
| Independent public score (not head-to-head) | null | null |
| Benchmarks Covered | 5 | 5 |
| Pricing (input/output) | N/A | $0.00 / $0.00 |

## Category Breakdown

### Coding

- Winner: Insufficient shared evidence
- Grok 2 public-lane score: Coming soon
- Nemotron Ultra 253B public-lane score: Coming soon

| Benchmark | Grok 2 | Nemotron Ultra 253B | Winner |
|-----------|-----------|-----------|--------|
| HumanEval | 88.4% | Coming soon | Coming soon |
| LiveCodeBench | Coming soon | 66.3% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Grok 2 public-lane score: Coming soon
- Nemotron Ultra 253B public-lane score: Coming soon

| Benchmark | Grok 2 | Nemotron Ultra 253B | Winner |
|-----------|-----------|-----------|--------|
| MMMU | 66.1% | Coming soon | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Grok 2 public-lane score: Coming soon
- Nemotron Ultra 253B public-lane score: Coming soon

| Benchmark | Grok 2 | Nemotron Ultra 253B | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 56% | 76.0% | Nemotron Ultra 253B |
| MMLU | 87.5% | Coming soon | Coming soon |
| MMLU-Pro | 75.5% | Coming soon | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Grok 2 public-lane score: Coming soon
- Nemotron Ultra 253B public-lane score: 0 (#127/128)

| Benchmark | Grok 2 | Nemotron Ultra 253B | Winner |
|-----------|-----------|-----------|--------|
| IFEval | Coming soon | 89.5% | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- Grok 2 public-lane score: Coming soon
- Nemotron Ultra 253B public-lane score: Coming soon

| Benchmark | Grok 2 | Nemotron Ultra 253B | Winner |
|-----------|-----------|-----------|--------|
| AIME 2025 | Coming soon | 72.5% | Coming soon |
| MATH-500 | Coming soon | 97% | Coming soon |

## FAQ

### Is there enough evidence to pick between Grok 2 and Nemotron Ultra 253B?

Not yet. The models share only 1 sourced benchmark row, so this mirror reports the available measurements and metadata without naming a broad winner.

### What can I compare safely on this page?

Published pricing, context windows, model type, and individual shared benchmark rows are directly comparable. Independent overall scores and non-overlapping benchmark coverage are labeled separately and should not be read as a controlled head-to-head result.

## Related Comparisons

- [Grok 2 vs Grok 2 mini](/compare/grok-2-vs-grok-2-mini)
- [Nemotron Ultra 253B vs Grok 2 mini](/compare/grok-2-mini-vs-nemotron-ultra-253b)
- [Grok 2 vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-grok-2)
- [Nemotron Ultra 253B vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-nemotron-ultra-253b)

## Explore More

- [Grok 2 profile](/models/grok-2)
- [Nemotron Ultra 253B profile](/models/nemotron-ultra-253b)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)