# Chatgpt 4o Latest 20250326 vs GPT-5.4 mini

> GPT-5.4 mini is the stronger model overall, scoring 45.0 to 43.8 on the Noometry Index.

- Canonical page: https://noometry.com/compare/chatgpt-4o-vs-gpt-5-4-mini
- Last updated: 2026-10-10
- Shared benchmarks: 20

## Summary

- They share 20 benchmarks with published results for both. Chatgpt 4o Latest 20250326 scores higher in 3 categories and GPT-5.4 mini in 6 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where GPT-5.4 mini leads 51.5 to 39.2.
- The biggest single-benchmark swing is Kagi LLM Benchmark: 75% for Chatgpt 4o Latest 20250326 and 37.9% for GPT-5.4 mini.

## Snapshot

| | Chatgpt 4o Latest 20250326 | GPT-5.4 mini |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Noometry Index | 43.8 | 45.0 |
| Rank | 82 | 76 |
| Context | — | 400K |
| Input $/M | — | $0.75 |
| Output $/M | — | $4.50 |
| Weights | Proprietary | Proprietary |

## Coding

- Chatgpt 4o Latest 20250326: 41.6 (#122)
- GPT-5.4 mini: 45.2 (#72)

| Benchmark | Chatgpt 4o Latest 20250326 | GPT-5.4 mini |
|---|---|---|
| LMArena Coding | 1413 | 1438 |
| FrontierCode | — | 27% |
| LMArena WebDev | — | 1397 |
| SciCode | — | 49.9% |
| WeirdML | — | 60.3% |
| ALE-Bench | — | 1,189 |

## Agentic & Tool Use

- Chatgpt 4o Latest 20250326: —
- GPT-5.4 mini: 29.9 (#81)

| Benchmark | Chatgpt 4o Latest 20250326 | GPT-5.4 mini |
|---|---|---|
| DeepResearch Bench | — | 36.3% |

## Reasoning

- Chatgpt 4o Latest 20250326: 33.8 (#71)
- GPT-5.4 mini: 30.4 (#85)

| Benchmark | Chatgpt 4o Latest 20250326 | GPT-5.4 mini |
|---|---|---|
| Kagi LLM Benchmark | 75% | 37.9% |
| LMArena Hard Prompts | 1424 | 1424 |
| ARC-AGI-2 | — | 18.9% |
| NYT Connections (extended) | — | 61.8% |
| ARC-AGI-1 | — | 63.7% |
| CritPt | — | 10% |
| Chess Puzzles | — | 24% |
| Thematic Generalization | — | 61.7% |
| Mystery Game Puzzles | — | 11% |
| DTBench | — | 80% |
| LMCA | — | 40.8% |
| Epoch Capabilities Index | — | 148.84 |
| ForecastBench | — | 57 |

## Math

- Chatgpt 4o Latest 20250326: 38.6 (#134)
- GPT-5.4 mini: 45.5 (#75)

| Benchmark | Chatgpt 4o Latest 20250326 | GPT-5.4 mini |
|---|---|---|
| LMArena Math | 1407 | 1419 |
| FrontierMath (Tiers 1-3) | — | 51.2% |
| FrontierMath Tier 4 | — | 9.8% |
| OTIS Mock AIME 2024-2025 | — | 88.9% |
| ProofBench | — | 21% |
| FrontierMath (Feb 2025 set) | — | 28.3% |
| FrontierMath Tier 4 (v1) | — | 2.1% |

## Knowledge

- Chatgpt 4o Latest 20250326: 39.2 (#137)
- GPT-5.4 mini: 51.5 (#67)

| Benchmark | Chatgpt 4o Latest 20250326 | GPT-5.4 mini |
|---|---|---|
| LMArena Expert | 1401 | 1435 |
| GPQA Diamond | — | 86.9% |
| SimpleQA Verified | — | 29.4% |
| Confabulations | 16.6% | — |
| Vectara Hallucination Rate | — | 5.5% |

## Multimodal

- Chatgpt 4o Latest 20250326: 39.6 (#58)
- GPT-5.4 mini: 39.7 (#56)

| Benchmark | Chatgpt 4o Latest 20250326 | GPT-5.4 mini |
|---|---|---|
| LMArena Vision | 1243 | 1245 |

## Multilingual

- Chatgpt 4o Latest 20250326: 52.9 (#76)
- GPT-5.4 mini: 51.9 (#96)

| Benchmark | Chatgpt 4o Latest 20250326 | GPT-5.4 mini |
|---|---|---|
| LMArena Non-English | 1419 | 1405 |
| LMArena Chinese | 1457 | 1446 |
| LMArena French | 1446 | 1440 |
| LMArena German | 1423 | 1409 |
| LMArena Japanese | 1405 | 1374 |
| LMArena Korean | 1396 | 1368 |
| LMArena Russian | 1429 | 1417 |
| LMArena Spanish | 1434 | 1405 |

## Instruction Following

- Chatgpt 4o Latest 20250326: 74.0 (#107)
- GPT-5.4 mini: 74.1 (#102)

| Benchmark | Chatgpt 4o Latest 20250326 | GPT-5.4 mini |
|---|---|---|
| LMArena Instruction Following | 1403 | 1405 |

## Long Context

- Chatgpt 4o Latest 20250326: 43.1 (#107)
- GPT-5.4 mini: 43.0 (#112)

| Benchmark | Chatgpt 4o Latest 20250326 | GPT-5.4 mini |
|---|---|---|
| LMArena Longer Query | 1413 | 1407 |

## Writing & Preference

- Chatgpt 4o Latest 20250326: 62.6 (#72)
- GPT-5.4 mini: 64.0 (#58)

| Benchmark | Chatgpt 4o Latest 20250326 | GPT-5.4 mini |
|---|---|---|
| LMArena Text | 1429 | 1412 |
| LMArena Creative Writing | 1405 | 1370 |
| EQ-Bench Creative Writing | 1501 | 1665 |
| LMArena Multi-Turn | 1454 | 1429 |

## FAQ

### Is Chatgpt 4o Latest 20250326 better than GPT-5.4 mini?

GPT-5.4 mini is the stronger model overall, scoring 45.0 to 43.8 on the Noometry Index.

### Is Chatgpt 4o Latest 20250326 or GPT-5.4 mini better for coding?

GPT-5.4 mini scores higher on coding benchmarks: 45.2 versus 41.6 in the Noometry coding category.

### How many benchmarks do Chatgpt 4o Latest 20250326 and GPT-5.4 mini share?

20 benchmarks have published results for both models. Chatgpt 4o Latest 20250326 has 21 scored results on Noometry and GPT-5.4 mini has 46.