# GPT-4.5 vs GPT-5.4 mini

> GPT-5.4 mini is the stronger model overall, scoring 44.8 to 36.9 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gpt-4-5-vs-gpt-5-4-mini
- Last updated: 2026-10-10
- Shared benchmarks: 25

## Summary

- They share 25 benchmarks with published results for both. GPT-4.5 scores higher in 1 category and GPT-5.4 mini in 9 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where GPT-5.4 mini leads 51.4 to 32.4.
- The biggest single-benchmark swing is ARC-AGI-1: 10.3% for GPT-4.5 and 63.7% for GPT-5.4 mini.

## Snapshot

| | GPT-4.5 | GPT-5.4 mini |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Noometry Index | 36.9 | 44.8 |
| Rank | 200 | 69 |
| Context | — | 400K |
| Input $/M | — | $0.75 |
| Output $/M | — | $4.50 |
| Weights | Proprietary | Proprietary |

## Coding

- GPT-4.5: 41.8 (#102)
- GPT-5.4 mini: 45.0 (#67)

| Benchmark | GPT-4.5 | GPT-5.4 mini |
|---|---|---|
| WeirdML | 39.4% | 60.3% |
| LMArena Coding | 1397 | 1438 |
| FrontierCode | — | 27% |
| Aider Polyglot | 44.9% | — |
| LMArena WebDev | — | 1397 |
| SciCode | — | 49.9% |
| LiveBench Coding | 75.2% | — |
| ALE-Bench | — | 1,189 |

## Agentic & Tool Use

- GPT-4.5: 27.6 (#92)
- GPT-5.4 mini: 29.6 (#74)

| Benchmark | GPT-4.5 | GPT-5.4 mini |
|---|---|---|
| Cybench | 17.5% | — |
| DeepResearch Bench | — | 36.3% |

## Reasoning

- GPT-4.5: 14.1 (#320)
- GPT-5.4 mini: 30.3 (#77)

| Benchmark | GPT-4.5 | GPT-5.4 mini |
|---|---|---|
| ARC-AGI-2 | 0.8% | 18.9% |
| ARC-AGI-1 | 10.3% | 63.7% |
| LMArena Hard Prompts | 1404 | 1424 |
| Epoch Capabilities Index | 136.74 | 148.83 |
| ForecastBench | 61.7 | 57 |
| SimpleBench | 34.5% | — |
| Kagi LLM Benchmark | — | 37.9% |
| NYT Connections (extended) | — | 61.8% |
| CritPt | — | 10% |
| Chess Puzzles | — | 24% |
| EnigmaEval | 3.2% | — |
| Thematic Generalization | — | 61.7% |
| LiveBench Reasoning | 71.1% | — |
| Mystery Game Puzzles | — | 11% |
| DTBench | — | 80% |
| LiveBench Data Analysis | 64.3% | — |
| LMCA | — | 40.8% |
| LiveBench | 69% | — |

## Math

- GPT-4.5: 31.0 (#200)
- GPT-5.4 mini: 45.4 (#63)

| Benchmark | GPT-4.5 | GPT-5.4 mini |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 37.8% | 88.9% |
| LMArena Math | 1412 | 1418 |
| FrontierMath (Tiers 1-3) | — | 51.2% |
| FrontierMath Tier 4 | — | 9.8% |
| ProofBench | — | 21% |
| LiveBench Math | 69.3% | — |
| MATH Level 5 | 78.6% | — |
| FrontierMath (Feb 2025 set) | — | 28.3% |
| FrontierMath Tier 4 (v1) | — | 2.1% |

## Knowledge

- GPT-4.5: 32.4 (#205)
- GPT-5.4 mini: 51.4 (#62)

| Benchmark | GPT-4.5 | GPT-5.4 mini |
|---|---|---|
| GPQA Diamond | 68.7% | 86.9% |
| LMArena Expert | 1394 | 1434 |
| Humanity's Last Exam | 5.4% | — |
| SimpleQA Verified | — | 29.4% |
| Confabulations | 13.6% | — |
| Vectara Hallucination Rate | — | 5.5% |

## Multimodal

- GPT-4.5: 37.0 (#68)
- GPT-5.4 mini: 39.0 (#51)

| Benchmark | GPT-4.5 | GPT-5.4 mini |
|---|---|---|
| LMArena Vision | 1195 | 1245 |
| VPCT | 45% | — |

## Multilingual

- GPT-4.5: 52.7 (#78)
- GPT-5.4 mini: 52.1 (#94)

| Benchmark | GPT-4.5 | GPT-5.4 mini |
|---|---|---|
| LMArena Non-English | 1413 | 1405 |
| LMArena Chinese | 1421 | 1446 |
| LMArena French | 1417 | 1440 |
| LMArena German | 1457 | 1407 |
| LMArena Japanese | 1416 | 1375 |
| LMArena Korean | 1392 | 1369 |
| LMArena Russian | 1419 | 1417 |
| LMArena Spanish | — | 1403 |

## Instruction Following

- GPT-4.5: 72.8 (#129)
- GPT-5.4 mini: 74.3 (#99)

| Benchmark | GPT-4.5 | GPT-5.4 mini |
|---|---|---|
| LMArena Instruction Following | 1404 | 1405 |
| LiveBench Instruction Following | 72.3% | — |

## Long Context

- GPT-4.5: 40.4 (#150)
- GPT-5.4 mini: 42.9 (#107)

| Benchmark | GPT-4.5 | GPT-5.4 mini |
|---|---|---|
| LMArena Longer Query | 1406 | 1407 |
| Fiction.LiveBench | 63.9% | — |

## Writing & Preference

- GPT-4.5: 57.1 (#129)
- GPT-5.4 mini: 64.2 (#56)

| Benchmark | GPT-4.5 | GPT-5.4 mini |
|---|---|---|
| LMArena Text | 1417 | 1411 |
| LMArena Creative Writing | 1394 | 1370 |
| EQ-Bench Creative Writing | 1258 | 1665 |
| LMArena Multi-Turn | 1444 | 1429 |
| Short-Story Creative Writing | 75.6% | — |
| LiveBench Language | 61.5% | — |

## FAQ

### Is GPT-4.5 better than GPT-5.4 mini?

GPT-5.4 mini is the stronger model overall, scoring 44.8 to 36.9 on the Noometry Index.

### Is GPT-4.5 or GPT-5.4 mini better for coding?

GPT-5.4 mini scores higher on coding benchmarks: 45.0 versus 41.8 in the Noometry coding category.

### How many benchmarks do GPT-4.5 and GPT-5.4 mini share?

25 benchmarks have published results for both models. GPT-4.5 has 42 scored results on Noometry and GPT-5.4 mini has 46.