# GPT-5.4 mini vs Mistral Medium

> GPT-5.4 mini is the stronger model overall, scoring 44.8 to 36.0 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gpt-5-4-mini-vs-mistral-medium
- Last updated: 2026-10-10
- Shared benchmarks: 31

## Summary

- They share 31 benchmarks with published results for both. GPT-5.4 mini scores higher in 9 categories and Mistral Medium in 1 category; 7 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where GPT-5.4 mini leads 51.4 to 24.9.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 88.9% for GPT-5.4 mini and 32.2% for Mistral Medium.
- GPT-5.4 mini is cheaper at $0.75 / $4.50 per million input/output tokens, against $1.50 / $7.50 for Mistral Medium.
- GPT-5.4 mini accepts more context: 400K tokens versus 262K.
- Mistral Medium has downloadable open weights; the other is API-only.

## Snapshot

| | GPT-5.4 mini | Mistral Medium |
|---|---|---|
| Provider | OpenAI | Mistral AI |
| Noometry Index | 44.8 | 36.0 |
| Rank | 69 | 211 |
| Context | 400K | 262K |
| Input $/M | $0.75 | $1.50 |
| Output $/M | $4.50 | $7.50 |
| Weights | Proprietary | Open |

## Coding

- GPT-5.4 mini: 45.0 (#67)
- Mistral Medium: 33.8 (#241)

| Benchmark | GPT-5.4 mini | Mistral Medium |
|---|---|---|
| FrontierCode | 27% | 8% |
| SciCode | 49.9% | 40.2% |
| WeirdML | 60.3% | 43.7% |
| LMArena Coding | 1438 | 1434 |
| ALE-Bench | 1,189 | 763.98 |
| LMArena WebDev | 1397 | — |

## Agentic & Tool Use

- GPT-5.4 mini: 29.6 (#74)
- Mistral Medium: 28.1 (#84)

| Benchmark | GPT-5.4 mini | Mistral Medium |
|---|---|---|
| Berkeley Function Calling Leaderboard | — | 37.7% |
| DeepResearch Bench | 36.3% | — |

## Reasoning

- GPT-5.4 mini: 30.3 (#77)
- Mistral Medium: 23.3 (#165)

| Benchmark | GPT-5.4 mini | Mistral Medium |
|---|---|---|
| Kagi LLM Benchmark | 37.9% | 50% |
| CritPt | 10% | 0% |
| LMArena Hard Prompts | 1424 | 1426 |
| DTBench | 80% | 75.5% |
| LMCA | 40.8% | 26.1% |
| ARC-AGI-2 | 18.9% | — |
| NYT Connections (extended) | 61.8% | — |
| ARC-AGI-1 | 63.7% | — |
| Chess Puzzles | 24% | — |
| Thematic Generalization | 61.7% | — |
| Mystery Game Puzzles | 11% | — |
| Surface Evolver Bench | — | 26.9% |
| Epoch Capabilities Index | 148.83 | — |
| ForecastBench | 57 | — |

## Math

- GPT-5.4 mini: 45.4 (#63)
- Mistral Medium: 27.2 (#238)

| Benchmark | GPT-5.4 mini | Mistral Medium |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 88.9% | 32.2% |
| ProofBench | 21% | 9% |
| LMArena Math | 1418 | 1409 |
| FrontierMath (Feb 2025 set) | 28.3% | 0.3% |
| FrontierMath (Tiers 1-3) | 51.2% | — |
| FrontierMath Tier 4 | 9.8% | — |
| MATH Level 5 | — | 81.6% |
| FrontierMath Tier 4 (v1) | 2.1% | — |

## Knowledge

- GPT-5.4 mini: 51.4 (#62)
- Mistral Medium: 24.9 (#260)

| Benchmark | GPT-5.4 mini | Mistral Medium |
|---|---|---|
| GPQA Diamond | 86.9% | 59.5% |
| Vectara Hallucination Rate | 5.5% | 22.7% |
| LMArena Expert | 1434 | 1408 |
| Humanity's Last Exam | — | 4.5% |
| SimpleQA Verified | 29.4% | — |

## Multimodal

- GPT-5.4 mini: 39.0 (#51)
- Mistral Medium: 34.6 (#82)

| Benchmark | GPT-5.4 mini | Mistral Medium |
|---|---|---|
| LMArena Vision | 1245 | 1172 |

## Multilingual

- GPT-5.4 mini: 52.1 (#94)
- Mistral Medium: 52.3 (#86)

| Benchmark | GPT-5.4 mini | Mistral Medium |
|---|---|---|
| LMArena Non-English | 1405 | 1408 |
| LMArena Chinese | 1446 | 1448 |
| LMArena French | 1440 | 1460 |
| LMArena German | 1407 | 1433 |
| LMArena Japanese | 1375 | 1378 |
| LMArena Korean | 1369 | 1382 |
| LMArena Russian | 1417 | 1411 |
| LMArena Spanish | 1403 | 1433 |

## Instruction Following

- GPT-5.4 mini: 74.3 (#99)
- Mistral Medium: 73.9 (#111)

| Benchmark | GPT-5.4 mini | Mistral Medium |
|---|---|---|
| LMArena Instruction Following | 1405 | 1398 |

## Long Context

- GPT-5.4 mini: 42.9 (#107)
- Mistral Medium: 42.9 (#108)

| Benchmark | GPT-5.4 mini | Mistral Medium |
|---|---|---|
| LMArena Longer Query | 1407 | 1406 |

## Writing & Preference

- GPT-5.4 mini: 64.2 (#56)
- Mistral Medium: 60.2 (#97)

| Benchmark | GPT-5.4 mini | Mistral Medium |
|---|---|---|
| LMArena Text | 1411 | 1424 |
| LMArena Creative Writing | 1370 | 1391 |
| LMArena Multi-Turn | 1429 | 1418 |
| Short-Story Creative Writing | — | 77.3% |
| EQ-Bench Creative Writing | 1665 | — |

## FAQ

### Is GPT-5.4 mini better than Mistral Medium?

GPT-5.4 mini is the stronger model overall, scoring 44.8 to 36.0 on the Noometry Index.

### Which is cheaper, GPT-5.4 mini or Mistral Medium?

GPT-5.4 mini is cheaper. It lists at $0.75 per million input tokens and $4.50 per million output tokens; Mistral Medium lists at $1.50 and $7.50.

### Is GPT-5.4 mini or Mistral Medium better for coding?

GPT-5.4 mini scores higher on coding benchmarks: 45.0 versus 33.8 in the Noometry coding category.

### Which has the bigger context window?

GPT-5.4 mini does, with 400K tokens against 262K.

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

31 benchmarks have published results for both models. GPT-5.4 mini has 46 scored results on Noometry and Mistral Medium has 36.