# GPT-5.4 nano vs Grok 4.6

> Side-by-side benchmark comparison for GPT-5.4 nano and Grok 4.6 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gpt-5-4-nano-vs-grok-4-6
- Last updated: September 25, 2026

- Shared sourced benchmarks: 7
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.7

## Quick Verdict

Pick Grok 4.6 if you want the stronger benchmark profile. GPT-5.4 nano only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Grok 4.6 leads overall 69.19 to 50.81.
- The clearest category separation is in agentic, where the averages are 31.7 for GPT-5.4 nano and 67.9 for Grok 4.6.
- The biggest single benchmark swing is ARC-AGI-2 in Reasoning, with scores of 5.7% and 67.1%.
- GPT-5.4 nano is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Grok 4.6 also has the larger context window at 500K.

## Model Snapshot

| Property | GPT-5.4 nano | Grok 4.6 |
|----------|----------|----------|
| Creator | OpenAI | xAI |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 400K | 500K |
| Overall Score | 50.81 | 69.19 |
| Benchmarks Covered | 20 | 17 |
| Pricing (input/output) | $0.20 / $1.25 | $2.00 / $6.00 |

## Category Breakdown

### Agentic

- Winner: Grok 4.6
- GPT-5.4 nano public-lane score: 31.7 (Supported · #64/105)
- Grok 4.6 public-lane score: 67.9 (Supported · #8/105)

| Benchmark | GPT-5.4 nano | Grok 4.6 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 46.3% | Coming soon | Coming soon |
| OSWorld-Verified | 39% | Coming soon | Coming soon |
| MCP Atlas | 56.1% | Coming soon | Coming soon |
| Toolathlon | 35.5% | Coming soon | Coming soon |
| τ²-bench results | 92.5% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 41.6% | 78.3% | Grok 4.6 |
| Terminal-Bench 3.0 | Coming soon | 26.5% | Coming soon |
| APEX-Agents | Coming soon | 57.5% | Coming soon |
| ApprenticeBench | Coming soon | 13% | Coming soon |

### Coding

- Winner: Grok 4.6
- GPT-5.4 nano public-lane score: 31.6 (Supported · #84/135)
- Grok 4.6 public-lane score: 62 (Supported · #14/135)

| Benchmark | GPT-5.4 nano | Grok 4.6 | Winner |
|-----------|-----------|-----------|--------|
| Vibe Code Bench | 26.10% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 84.0% | 88.2% | Grok 4.6 |
| SWE-bench (Vals) | 69.8% | 95.6% | Grok 4.6 |
| Bug Hunt Bench | Coming soon | 27 fixes | Coming soon |
| DeepSWE | Coming soon | 65.9% | Coming soon |
| cursorBench32 | Coming soon | 70.8% | Coming soon |
| FrontierCode 1.1 Extended | Coming soon | 61.3% | Coming soon |
| VulcanBench v3 | Coming soon | 87.0% | Coming soon |
| FrontierSWE v2 | Coming soon | 25.3% | Coming soon |

### Reasoning

- Winner: Not comparable
- GPT-5.4 nano public-lane score: 36.9 (Unranked · 4 rankable rows)
- Grok 4.6 public-lane score: 57.6 (#16/19)

| Benchmark | GPT-5.4 nano | Grok 4.6 | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-1 | 51.50% | 87.00% | Grok 4.6 |
| ARC-AGI-2 | 5.7% | 67.1% | Grok 4.6 |
| ARC-AGI-3 | Coming soon | 2.1% | Coming soon |

### Multimodal & Grounded

- Winner: Not comparable
- GPT-5.4 nano public-lane score: 23.8 (#47/50)
- Grok 4.6 public-lane score: Coming soon

| Benchmark | GPT-5.4 nano | Grok 4.6 | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | 66.1% | Coming soon | Coming soon |
| MMMU-Pro w/ Python | 69.5% | Coming soon | Coming soon |

### Knowledge

- Winner: Grok 4.6
- GPT-5.4 nano public-lane score: 37.8 (Supported · #97/158)
- Grok 4.6 public-lane score: 69 (Supported · #13/158)

| Benchmark | GPT-5.4 nano | Grok 4.6 | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 82.8% | Coming soon | Coming soon |
| HLE | 37.7% | Coming soon | Coming soon |
| HLE w/o tools | 24.3% | Coming soon | Coming soon |
| GPQA Diamond (Vals) | 77.5% | 94.7% | Grok 4.6 |
| MMLU-Pro (Vals) | 77.2% | 89.4% | Grok 4.6 |

### Instruction Following

- Winner: Not comparable
- GPT-5.4 nano public-lane score: 91.9 (#9/124)
- Grok 4.6 public-lane score: Coming soon

### Mathematics

- Winner: Not comparable
- GPT-5.4 nano public-lane score: 43.8 (Unranked · 2 rankable rows)
- Grok 4.6 public-lane score: Coming soon

| Benchmark | GPT-5.4 nano | Grok 4.6 | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 25.860% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 6.250% | Coming soon | Coming soon |

## FAQ

### Which is better overall, GPT-5.4 nano or Grok 4.6?

Grok 4.6 is ahead overall on BenchLM right now.

### Where is the biggest gap between GPT-5.4 nano and Grok 4.6?

The widest category gap is in agentic, where the averages are 31.7 for GPT-5.4 nano and 67.9 for Grok 4.6.

### How many benchmarks does GPT-5.4 nano cover on BenchLM?

GPT-5.4 nano currently has 20 sourced benchmark scores on BenchLM.

### How many benchmarks does Grok 4.6 cover on BenchLM?

Grok 4.6 currently has 17 sourced benchmark scores on BenchLM.

## Related Comparisons

- [GPT-5.4 nano vs GPT-5.4 Pro](/compare/gpt-5-4-nano-vs-gpt-5-4-pro)
- [Grok 4.6 vs GPT-5.4 Pro](/compare/gpt-5-4-pro-vs-grok-4-6)
- [GPT-5.4 nano vs GPT-5.4](/compare/gpt-5-4-vs-gpt-5-4-nano)
- [Grok 4.6 vs GPT-5.4](/compare/gpt-5-4-vs-grok-4-6)

## Explore More

- [GPT-5.4 nano profile](/models/gpt-5-4-nano)
- [Grok 4.6 profile](/models/grok-4-6)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)