# GPT-4.1 vs GPT-4.1 nano

> Side-by-side benchmark comparison for GPT-4.1 and GPT-4.1 nano across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gpt-4-1-vs-gpt-4-1-nano
- Last updated: September 4, 2026

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

## Quick Verdict

Pick GPT-4.1 if you want the stronger benchmark profile. GPT-4.1 nano only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- GPT-4.1 leads overall 43.81 to 28.43.
- The clearest category separation is in reasoning, where the averages are 67.2 for GPT-4.1 and 34.9 for GPT-4.1 nano.
- The biggest single benchmark swing is GPQA in Knowledge, with scores of 66.3% and 50.3%.
- GPT-4.1 nano is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.

## Model Snapshot

| Property | GPT-4.1 | GPT-4.1 nano |
|----------|----------|----------|
| Creator | OpenAI | OpenAI |
| Type | Proprietary | Proprietary |
| Reasoning | Non-Reasoning | Non-Reasoning |
| Context | 1M | 1M |
| Overall Score | 43.81 | 28.43 |
| Benchmarks Covered | 7 | 4 |
| Pricing (input/output) | $2.00 / $8.00 | $0.10 / $0.40 |

## Category Breakdown

### Agentic

- Winner: Coming soon
- GPT-4.1 public-lane score: Coming soon
- GPT-4.1 nano public-lane score: 32 (Estimated · #137/151)

| Benchmark | GPT-4.1 | GPT-4.1 nano | Winner |
|-----------|-----------|-----------|--------|
| Gert Labs | 25.65% | Coming soon | Coming soon |

### Coding

- Winner: Coming soon
- GPT-4.1 public-lane score: 38.8 (Supported · #143/183)
- GPT-4.1 nano public-lane score: 32.3 (Estimated · #164/183)

| Benchmark | GPT-4.1 | GPT-4.1 nano | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 54.6% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Coming soon
- GPT-4.1 public-lane score: 50.2 (Unranked · 1 rankable row)
- GPT-4.1 nano public-lane score: 25.3 (Unranked · 1 rankable row)

### Reasoning

- Winner: Coming soon
- GPT-4.1 public-lane score: 67.2 (Unranked · 2 rankable rows)
- GPT-4.1 nano public-lane score: 34.9 (Unranked · 2 rankable rows)

### Knowledge

- Winner: GPT-4.1
- GPT-4.1 public-lane score: 40.7 (Supported · #135/181)
- GPT-4.1 nano public-lane score: 30.2 (Supported · #175/181)

| Benchmark | GPT-4.1 | GPT-4.1 nano | Winner |
|-----------|-----------|-----------|--------|
| MMLU | 90.2% | 80.1% | GPT-4.1 |
| GPQA | 66.3% | 50.3% | GPT-4.1 |

### Instruction Following

- Winner: Coming soon
- GPT-4.1 public-lane score: 50.3 (#80/120)
- GPT-4.1 nano public-lane score: 36 (#106/120)

| Benchmark | GPT-4.1 | GPT-4.1 nano | Winner |
|-----------|-----------|-----------|--------|
| IFEval | 87.4% | 83.2% | GPT-4.1 |

### Mathematics

- Winner: Coming soon
- GPT-4.1 public-lane score: 28.1 (Unranked · 2 rankable rows)
- GPT-4.1 nano public-lane score: 25.6 (Unranked · 1 rankable row)

| Benchmark | GPT-4.1 | GPT-4.1 nano | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 5.517% | 1.034% | GPT-4.1 |
| FrontierMath v2 (Tier 4) | 0.000% | Coming soon | Coming soon |

## FAQ

### Which is better overall, GPT-4.1 or GPT-4.1 nano?

GPT-4.1 is ahead overall on BenchLM right now.

### Where is the biggest gap between GPT-4.1 and GPT-4.1 nano?

The widest category gap is in reasoning, where the averages are 67.2 for GPT-4.1 and 34.9 for GPT-4.1 nano.

### How many benchmarks does GPT-4.1 cover on BenchLM?

GPT-4.1 currently has 7 sourced benchmark scores on BenchLM.

### How many benchmarks does GPT-4.1 nano cover on BenchLM?

GPT-4.1 nano currently has 4 sourced benchmark scores on BenchLM.

## Related Comparisons

- [GPT-4.1 vs GPT-4.1 mini](/compare/gpt-4-1-vs-gpt-4-1-mini)
- [GPT-4.1 nano vs GPT-4.1 mini](/compare/gpt-4-1-mini-vs-gpt-4-1-nano)
- [GPT-4.1 vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-gpt-4-1)
- [GPT-4.1 nano vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-gpt-4-1-nano)

## Explore More

- [GPT-4.1 profile](/models/gpt-4-1)
- [GPT-4.1 nano profile](/models/gpt-4-1-nano)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)