# Grok 4.1 Fast (Reasoning) vs Nemotron 3.5 Super VL 120B A12B

> Side-by-side benchmark comparison for Grok 4.1 Fast (Reasoning) and Nemotron 3.5 Super VL 120B A12B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/grok-4-1-fast-reasoning-vs-nemotron-3-5-super-vl-120b-a12b
- Last updated: October 15, 2026

- Shared sourced benchmarks: 0
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

No benchmark verdict yet: there is no shared sourced benchmark row for Grok 4.1 Fast (Reasoning) and Nemotron 3.5 Super VL 120B A12B.

## Summary

- Grok 4.1 Fast (Reasoning) and Nemotron 3.5 Super VL 120B A12B do not currently share a sourced benchmark row. The mirror therefore compares metadata, pricing, context windows, and each model's separately reported coverage without naming a benchmark winner.

## Model Snapshot

| Property | Grok 4.1 Fast (Reasoning) | Nemotron 3.5 Super VL 120B A12B |
|----------|----------|----------|
| Creator | xAI | NVIDIA |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 2M | 1M |
| Independent public score (not head-to-head) | 45.84 | 49.51 |
| Benchmarks Covered | 1 | 19 |
| Pricing (input/output) | N/A | Pricing unavailable / Pricing unavailable |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Grok 4.1 Fast (Reasoning) public-lane score: Coming soon
- Nemotron 3.5 Super VL 120B A12B public-lane score: 44.2 (Estimated · #61/127)

| Benchmark | Grok 4.1 Fast (Reasoning) | Nemotron 3.5 Super VL 120B A12B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | Coming soon | 66.7% | Coming soon |
| τ²-bench Airline | Coming soon | 76.5% | Coming soon |
| τ³-bench results | Coming soon | 18.9% | Coming soon |
| BrowseComp | Coming soon | 78% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Grok 4.1 Fast (Reasoning) public-lane score: 24.7 (Estimated · #107/150)
- Nemotron 3.5 Super VL 120B A12B public-lane score: Coming soon

| Benchmark | Grok 4.1 Fast (Reasoning) | Nemotron 3.5 Super VL 120B A12B | Winner |
|-----------|-----------|-----------|--------|
| Vibe Code Bench | 1.20% | Coming soon | Coming soon |
| LiveCodeBench v6 | Coming soon | 88.2% | Coming soon |
| SWE-bench Verified | Coming soon | 71.1% | Coming soon |
| SWE Multilingual | Coming soon | 67.7% | Coming soon |
| SWE-bench Pro | Coming soon | 51.8% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Grok 4.1 Fast (Reasoning) public-lane score: 76.7 (Unranked · 2 rankable rows)
- Nemotron 3.5 Super VL 120B A12B public-lane score: 73 (Unranked · 2 rankable rows)

| Benchmark | Grok 4.1 Fast (Reasoning) | Nemotron 3.5 Super VL 120B A12B | Winner |
|-----------|-----------|-----------|--------|
| CritPt | Coming soon | 10.9% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Grok 4.1 Fast (Reasoning) public-lane score: 57.8 (Unranked · 1 rankable row)
- Nemotron 3.5 Super VL 120B A12B public-lane score: 62 (Unranked · 5 rankable rows)

| Benchmark | Grok 4.1 Fast (Reasoning) | Nemotron 3.5 Super VL 120B A12B | Winner |
|-----------|-----------|-----------|--------|
| BabyVision | Coming soon | 29.6% | Coming soon |
| MMLongBench-Doc | Coming soon | 62.8% | Coming soon |
| V* | Coming soon | 85.6% | Coming soon |
| MathVision | Coming soon | 78.2% | Coming soon |
| CharXiv | Coming soon | 80.8% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Grok 4.1 Fast (Reasoning) public-lane score: 42.9 (Estimated · #108/184)
- Nemotron 3.5 Super VL 120B A12B public-lane score: 51.8 (Estimated · #73/184)

| Benchmark | Grok 4.1 Fast (Reasoning) | Nemotron 3.5 Super VL 120B A12B | Winner |
|-----------|-----------|-----------|--------|
| GPQA-D | Coming soon | 89.5% | Coming soon |
| HLE w/o tools | Coming soon | 31.8% | Coming soon |
| HLE | Coming soon | 29.2% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Grok 4.1 Fast (Reasoning) public-lane score: 63 (#78/146)
- Nemotron 3.5 Super VL 120B A12B public-lane score: 66.6 (#72/146)

| Benchmark | Grok 4.1 Fast (Reasoning) | Nemotron 3.5 Super VL 120B A12B | Winner |
|-----------|-----------|-----------|--------|
| IFBench | Coming soon | 70.9% | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- Grok 4.1 Fast (Reasoning) public-lane score: Coming soon
- Nemotron 3.5 Super VL 120B A12B public-lane score: Coming soon

| Benchmark | Grok 4.1 Fast (Reasoning) | Nemotron 3.5 Super VL 120B A12B | Winner |
|-----------|-----------|-----------|--------|
| Apex Shortlist | Coming soon | 88.4% | Coming soon |

## FAQ

### Can I compare Grok 4.1 Fast (Reasoning) and Nemotron 3.5 Super VL 120B A12B on BenchLM yet?

Not fully yet. BenchLM is tracking both models, but sourced benchmark coverage is still incomplete for a fair score-level comparison.

### Why does this page show "coming soon" values?

BenchLM only calls winners when public benchmark coverage is available on both sides of the comparison.

## Related Comparisons

- [Grok 4.1 Fast (Reasoning) vs Grok 4.1 Fast](/compare/grok-4-1-fast-vs-grok-4-1-fast-reasoning)
- [Nemotron 3.5 Super VL 120B A12B vs Grok 4.1 Fast](/compare/grok-4-1-fast-vs-nemotron-3-5-super-vl-120b-a12b)
- [Grok 4.1 Fast (Reasoning) vs Nemotron 3.5 Super VL 120B A12B NVFP4](/compare/grok-4-1-fast-reasoning-vs-nemotron-3-5-super-vl-120b-a12b-nvfp4)
- [Nemotron 3.5 Super VL 120B A12B vs Nemotron 3.5 Super VL 120B A12B NVFP4](/compare/nemotron-3-5-super-vl-120b-a12b-vs-nemotron-3-5-super-vl-120b-a12b-nvfp4)

## Explore More

- [Grok 4.1 Fast (Reasoning) profile](/models/grok-4-1-fast-reasoning)
- [Nemotron 3.5 Super VL 120B A12B profile](/models/nemotron-3-5-super-vl-120b-a12b)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)