# GPT-4.1 mini vs Yi-1.5-34B

> GPT-4.1 mini is the stronger model overall, scoring 33.6 to 30.6 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gpt-4-1-mini-vs-yi-1-5-34b
- Last updated: 2026-10-10
- Shared benchmarks: 20

## Summary

- They share 20 benchmarks with published results for both. GPT-4.1 mini scores higher in 4 categories and Yi-1.5-34B in 4 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where GPT-4.1 mini leads 34.7 to 14.8.
- The biggest single-benchmark swing is MATH Level 5: 87.3% for GPT-4.1 mini and 25.5% for Yi-1.5-34B.
- Yi-1.5-34B has downloadable open weights; the other is API-only.

## Snapshot

| | GPT-4.1 mini | Yi-1.5-34B |
|---|---|---|
| Provider | OpenAI | 01.AI |
| Noometry Index | 33.6 | 30.6 |
| Rank | 240 | 289 |
| Context | 1.05M | — |
| Input $/M | $0.40 | — |
| Output $/M | $1.60 | — |
| Weights | Proprietary | Open |

## Coding

- GPT-4.1 mini: 30.6 (#293)
- Yi-1.5-34B: 32.4 (#272)

| Benchmark | GPT-4.1 mini | Yi-1.5-34B |
|---|---|---|
| BigCodeBench Instruct | 48.9% | 33.9% |
| LMArena Coding | 1367 | 1169 |
| SWE-bench Verified (bash only) | 23.9% | — |
| Aider Polyglot | 32.4% | — |
| SciCode | 40.4% | — |
| WeirdML | 37.6% | — |
| BigCodeBench Complete | — | 43.8% |
| CadEval | 16% | — |

## Agentic & Tool Use

- GPT-4.1 mini: 33.3 (#55)
- Yi-1.5-34B: —

| Benchmark | GPT-4.1 mini | Yi-1.5-34B |
|---|---|---|
| Berkeley Function Calling Leaderboard | 50.5% | — |

## Reasoning

- GPT-4.1 mini: 10.8 (#340)
- Yi-1.5-34B: 22.5 (#191)

| Benchmark | GPT-4.1 mini | Yi-1.5-34B |
|---|---|---|
| LMArena Hard Prompts | 1349 | 1160 |
| ARC-AGI-2 | 0% | — |
| Kagi LLM Benchmark | 48.6% | — |
| ARC-AGI-1 | 3.5% | — |
| CritPt | 0% | — |
| Chess Puzzles | 7% | — |
| Mystery Game Puzzles | 7% | — |
| DTBench | 68.8% | — |
| LMCA | 21.1% | — |
| Epoch Capabilities Index | 135.01 | — |

## Math

- GPT-4.1 mini: 24.1 (#270)
- Yi-1.5-34B: 27.5 (#249)

| Benchmark | GPT-4.1 mini | Yi-1.5-34B |
|---|---|---|
| LMArena Math | 1343 | 1182 |
| MATH Level 5 | 87.3% | 25.5% |
| FrontierMath (Tiers 1-3) | 6.7% | — |
| OTIS Mock AIME 2024-2025 | 44.7% | — |
| Omni-MATH | 49.1% | — |
| FrontierMath (Feb 2025 set) | 4.5% | — |

## Knowledge

- GPT-4.1 mini: 34.7 (#194)
- Yi-1.5-34B: 14.8 (#295)

| Benchmark | GPT-4.1 mini | Yi-1.5-34B |
|---|---|---|
| GPQA Diamond | 65.8% | 32% |
| LMArena Expert | 1338 | 1144 |
| SimpleQA Verified | 12.7% | — |
| MMLU-Pro | 78.3% | — |
| GPQA (HELM) | 61.4% | — |

## Multimodal

- GPT-4.1 mini: 35.8 (#82)
- Yi-1.5-34B: —

| Benchmark | GPT-4.1 mini | Yi-1.5-34B |
|---|---|---|
| LMArena Vision | 1181 | — |

## Multilingual

- GPT-4.1 mini: 45.7 (#166)
- Yi-1.5-34B: 32.3 (#256)

| Benchmark | GPT-4.1 mini | Yi-1.5-34B |
|---|---|---|
| LMArena Non-English | 1318 | 1121 |
| LMArena Chinese | 1329 | 1213 |
| LMArena French | 1358 | 1156 |
| LMArena German | 1351 | 1111 |
| LMArena Japanese | 1290 | 1021 |
| LMArena Korean | 1298 | 1005 |
| LMArena Russian | 1324 | 1091 |
| LMArena Spanish | 1319 | 1121 |

## Instruction Following

- GPT-4.1 mini: 73.7 (#118)
- Yi-1.5-34B: 59.2 (#257)

| Benchmark | GPT-4.1 mini | Yi-1.5-34B |
|---|---|---|
| LMArena Instruction Following | 1333 | 1139 |
| IFEval | 90.4% | — |

## Long Context

- GPT-4.1 mini: 31.8 (#275)
- Yi-1.5-34B: 34.6 (#248)

| Benchmark | GPT-4.1 mini | Yi-1.5-34B |
|---|---|---|
| LMArena Longer Query | 1344 | 1143 |
| Fiction.LiveBench | 44.4% | — |

## Writing & Preference

- GPT-4.1 mini: 48.6 (#199)
- Yi-1.5-34B: 37.4 (#257)

| Benchmark | GPT-4.1 mini | Yi-1.5-34B |
|---|---|---|
| LMArena Text | 1340 | 1173 |
| LMArena Creative Writing | 1300 | 1135 |
| LMArena Multi-Turn | 1354 | 1153 |
| EQ-Bench Creative Writing | 1147 | — |
| WildBench | 83.8% | — |

## FAQ

### Is GPT-4.1 mini better than Yi-1.5-34B?

GPT-4.1 mini is the stronger model overall, scoring 33.6 to 30.6 on the Noometry Index.

### Is GPT-4.1 mini or Yi-1.5-34B better for coding?

Yi-1.5-34B scores higher on coding benchmarks: 32.4 versus 30.6 in the Noometry coding category.

### How many benchmarks do GPT-4.1 mini and Yi-1.5-34B share?

20 benchmarks have published results for both models. GPT-4.1 mini has 47 scored results on Noometry and Yi-1.5-34B has 21.