# GPT-4.1 nano vs Mercury

> Mercury is the stronger model overall, scoring 37.6 to 27.9 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gpt-4-1-nano-vs-mercury
- Last updated: 2026-10-12
- Shared benchmarks: 9

## Summary

- They share 9 benchmarks with published results for both. GPT-4.1 nano scores higher in 1 category and Mercury in 5 categories; 5 gaps are clear of the uncertainty.
- The widest gap is in long context, where Mercury leads 38.4 to 23.7.
- The biggest single-benchmark swing is Kagi LLM Benchmark: 33.3% for GPT-4.1 nano and 21.6% for Mercury.

## Snapshot

| | GPT-4.1 nano | Mercury |
|---|---|---|
| Provider | OpenAI | Inception |
| Noometry Index | 27.9 | 37.6 |
| Rank | 327 | 199 |
| Context | 1.05M | — |
| Input $/M | $0.10 | — |
| Output $/M | $0.40 | — |
| Weights | Proprietary | Proprietary |

## Coding

- GPT-4.1 nano: 24.1 (#330)
- Mercury: 38.7 (#170)

| Benchmark | GPT-4.1 nano | Mercury |
|---|---|---|
| LMArena Coding | 1306 | 1322 |
| Aider Polyglot | 8.9% | — |
| SciCode | 25.9% | — |
| WeirdML | 19% | — |

## Agentic & Tool Use

- GPT-4.1 nano: 26.5 (#104)
- Mercury: —

| Benchmark | GPT-4.1 nano | Mercury |
|---|---|---|
| Berkeley Function Calling Leaderboard | 33% | — |

## Reasoning

- GPT-4.1 nano: 8.5 (#349)
- Mercury: 17.5 (#293)

| Benchmark | GPT-4.1 nano | Mercury |
|---|---|---|
| Kagi LLM Benchmark | 33.3% | 21.6% |
| LMArena Hard Prompts | 1286 | 1285 |
| ARC-AGI-2 | 0% | — |
| ARC-AGI-1 | 0% | — |
| CritPt | 0% | — |
| DTBench | 52.5% | — |
| LMCA | 5.5% | — |
| Epoch Capabilities Index | 129.62 | — |

## Math

- GPT-4.1 nano: 26.9 (#252)
- Mercury: —

| Benchmark | GPT-4.1 nano | Mercury |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 28.9% | — |
| Omni-MATH | 36.7% | — |
| LMArena Math | 1274 | — |
| MATH Level 5 | 70% | — |
| FrontierMath (Feb 2025 set) | 1% | — |

## Knowledge

- GPT-4.1 nano: 21.8 (#273)
- Mercury: —

| Benchmark | GPT-4.1 nano | Mercury |
|---|---|---|
| GPQA Diamond | 48.9% | — |
| SimpleQA Verified | 6% | — |
| MMLU-Pro | 55% | — |
| GPQA (HELM) | 50.7% | — |
| LMArena Expert | 1272 | — |

## Multimodal

- GPT-4.1 nano: 29.2 (#113)
- Mercury: —

| Benchmark | GPT-4.1 nano | Mercury |
|---|---|---|
| LMArena Vision | 1063 | — |

## Multilingual

- GPT-4.1 nano: 41.6 (#205)
- Mercury: 41.6 (#206)

| Benchmark | GPT-4.1 nano | Mercury |
|---|---|---|
| LMArena Non-English | 1260 | 1260 |
| LMArena Chinese | 1270 | — |
| LMArena German | 1288 | — |
| LMArena Japanese | 1198 | — |
| LMArena Russian | 1261 | — |

## Instruction Following

- GPT-4.1 nano: 67.8 (#193)
- Mercury: 65.2 (#224)

| Benchmark | GPT-4.1 nano | Mercury |
|---|---|---|
| LMArena Instruction Following | 1267 | 1239 |
| IFEval | 84.3% | — |

## Long Context

- GPT-4.1 nano: 23.7 (#296)
- Mercury: 38.4 (#198)

| Benchmark | GPT-4.1 nano | Mercury |
|---|---|---|
| LMArena Longer Query | 1283 | 1266 |
| Fiction.LiveBench | 25% | — |

## Writing & Preference

- GPT-4.1 nano: 40.5 (#243)
- Mercury: 46.2 (#221)

| Benchmark | GPT-4.1 nano | Mercury |
|---|---|---|
| LMArena Text | 1285 | 1282 |
| LMArena Creative Writing | 1260 | 1191 |
| LMArena Multi-Turn | 1277 | 1282 |
| EQ-Bench Creative Writing | 946 | — |
| WildBench | 81.2% | — |

## FAQ

### Is GPT-4.1 nano better than Mercury?

Mercury is the stronger model overall, scoring 37.6 to 27.9 on the Noometry Index.

### Is GPT-4.1 nano or Mercury better for coding?

Mercury scores higher on coding benchmarks: 38.7 versus 24.1 in the Noometry coding category.

### How many benchmarks do GPT-4.1 nano and Mercury share?

9 benchmarks have published results for both models. GPT-4.1 nano has 38 scored results on Noometry and Mercury has 9.