# GPT-4.5 vs GPT-4o mini

> GPT-4.5 is the stronger model overall, scoring 37.2 to 25.5 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gpt-4-5-vs-gpt-4o-mini
- Last updated: 2026-10-10
- Shared benchmarks: 36

## Summary

- They share 36 benchmarks with published results for both. GPT-4.5 scores higher in 10 categories and GPT-4o mini in 0 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in math, where GPT-4.5 leads 32.6 to 10.4.
- The biggest single-benchmark swing is Aider Polyglot: 44.9% for GPT-4.5 and 3.6% for GPT-4o mini.

## Snapshot

| | GPT-4.5 | GPT-4o mini |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Noometry Index | 37.2 | 25.5 |
| Rank | 208 | 343 |
| Context | — | 128K |
| Input $/M | — | $0.15 |
| Output $/M | — | $0.60 |
| Weights | Proprietary | Proprietary |

## Coding

- GPT-4.5: 42.2 (#109)
- GPT-4o mini: 22.0 (#335)

| Benchmark | GPT-4.5 | GPT-4o mini |
|---|---|---|
| Aider Polyglot | 44.9% | 3.6% |
| WeirdML | 39.4% | 11.8% |
| LiveBench Coding | 75.2% | 43.1% |
| LMArena Coding | 1396 | 1290 |
| BigCodeBench Instruct | — | 46.1% |
| BigCodeBench Complete | — | 57.4% |
| HumanEval+ | — | 83.5% |
| MBPP+ | — | 72.2% |

## Agentic & Tool Use

- GPT-4.5: 27.9 (#97)
- GPT-4o mini: 27.5 (#101)

| Benchmark | GPT-4.5 | GPT-4o mini |
|---|---|---|
| Cybench | 17.5% | — |
| BALROG | — | 17.4% |

## Reasoning

- GPT-4.5: 13.9 (#330)
- GPT-4o mini: 8.7 (#347)

| Benchmark | GPT-4.5 | GPT-4o mini |
|---|---|---|
| ARC-AGI-2 | 0.8% | 0% |
| SimpleBench | 34.5% | 10.7% |
| LiveBench Reasoning | 71.1% | 32.8% |
| LMArena Hard Prompts | 1403 | 1267 |
| LiveBench Data Analysis | 64.3% | 50% |
| Epoch Capabilities Index | 136.74 | 126.56 |
| LiveBench | 69% | 41.3% |
| Kagi LLM Benchmark | — | 28.8% |
| ARC-AGI-1 | 10.3% | — |
| Chess Puzzles | — | 0% |
| EnigmaEval | 3.2% | — |
| Mystery Game Puzzles | — | 12% |
| DTBench | — | 54.4% |
| LMCA | — | 10.4% |
| ForecastBench | 61.7 | — |
| PIQA | — | 88.7% |

## Math

- GPT-4.5: 32.6 (#211)
- GPT-4o mini: 10.4 (#314)

| Benchmark | GPT-4.5 | GPT-4o mini |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 37.8% | 6.9% |
| LiveBench Math | 69.3% | 36.3% |
| LMArena Math | 1412 | 1267 |
| MATH Level 5 | 78.6% | 52.6% |
| FrontierMath (Tiers 1-3) | — | 0.7% |
| Omni-MATH | — | 28% |
| GSM8K | — | 91.3% |

## Knowledge

- GPT-4.5: 32.5 (#211)
- GPT-4o mini: 17.7 (#284)

| Benchmark | GPT-4.5 | GPT-4o mini |
|---|---|---|
| GPQA Diamond | 68.7% | 37.7% |
| Confabulations | 13.6% | 37.2% |
| LMArena Expert | 1394 | 1235 |
| Humanity's Last Exam | 5.4% | — |
| SimpleQA Verified | — | 8.3% |
| MMLU-Pro | — | 60.3% |
| GPQA (HELM) | — | 36.8% |
| BoolQ | — | 88.7% |
| MMLU | — | 81.8% |

## Multimodal

- GPT-4.5: 37.6 (#71)
- GPT-4o mini: 25.9 (#122)

| Benchmark | GPT-4.5 | GPT-4o mini |
|---|---|---|
| LMArena Vision | 1195 | 1066 |
| VPCT | 45% | 34% |
| Video-MME | — | 64.8% |
| GeoBench | — | 64% |

## Multilingual

- GPT-4.5: 52.5 (#83)
- GPT-4o mini: 42.0 (#199)

| Benchmark | GPT-4.5 | GPT-4o mini |
|---|---|---|
| LMArena Non-English | 1413 | 1266 |
| LMArena Chinese | 1421 | 1265 |
| LMArena French | 1418 | 1297 |
| LMArena German | 1457 | 1272 |
| LMArena Japanese | 1416 | 1216 |
| LMArena Korean | 1392 | 1195 |
| LMArena Russian | 1419 | 1275 |
| LMArena Spanish | — | 1276 |

## Instruction Following

- GPT-4.5: 72.6 (#134)
- GPT-4o mini: 61.9 (#239)

| Benchmark | GPT-4.5 | GPT-4o mini |
|---|---|---|
| LiveBench Instruction Following | 72.3% | 56.8% |
| LMArena Instruction Following | 1404 | 1258 |
| IFEval | — | 78.2% |

## Long Context

- GPT-4.5: 40.4 (#155)
- GPT-4o mini: 39.1 (#186)

| Benchmark | GPT-4.5 | GPT-4o mini |
|---|---|---|
| LMArena Longer Query | 1406 | 1289 |
| Fiction.LiveBench | 63.9% | — |

## Writing & Preference

- GPT-4.5: 56.9 (#134)
- GPT-4o mini: 39.5 (#248)

| Benchmark | GPT-4.5 | GPT-4o mini |
|---|---|---|
| LMArena Text | 1417 | 1286 |
| LMArena Creative Writing | 1394 | 1268 |
| Short-Story Creative Writing | 75.6% | 67.2% |
| EQ-Bench Creative Writing | 1258 | 873 |
| LMArena Multi-Turn | 1444 | 1285 |
| LiveBench Language | 61.5% | 28.6% |
| WildBench | — | 79.1% |

## FAQ

### Is GPT-4.5 better than GPT-4o mini?

GPT-4.5 is the stronger model overall, scoring 37.2 to 25.5 on the Noometry Index.

### Is GPT-4.5 or GPT-4o mini better for coding?

GPT-4.5 scores higher on coding benchmarks: 42.2 versus 22.0 in the Noometry coding category.

### How many benchmarks do GPT-4.5 and GPT-4o mini share?

36 benchmarks have published results for both models. GPT-4.5 has 42 scored results on Noometry and GPT-4o mini has 60.