# Gemini 1.5 Flash 8B vs GPT-5.4 mini

> GPT-5.4 mini is the stronger model overall, scoring 45.0 to 29.9 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gemini-1-5-flash-8b-vs-gpt-5-4-mini
- Last updated: 2026-10-12
- Shared benchmarks: 21

## Summary

- They share 21 benchmarks with published results for both. Gemini 1.5 Flash 8B scores higher in 0 categories 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 51.5 to 16.0.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 4.6% for Gemini 1.5 Flash 8B and 88.9% for GPT-5.4 mini.

## Snapshot

| | Gemini 1.5 Flash 8B | GPT-5.4 mini |
|---|---|---|
| Provider | Google | OpenAI |
| Noometry Index | 29.9 | 45.0 |
| Rank | 301 | 76 |
| Context | — | 400K |
| Input $/M | — | $0.75 |
| Output $/M | — | $4.50 |
| Weights | Proprietary | Proprietary |

## Coding

- Gemini 1.5 Flash 8B: 35.5 (#225)
- GPT-5.4 mini: 45.2 (#72)

| Benchmark | Gemini 1.5 Flash 8B | GPT-5.4 mini |
|---|---|---|
| LMArena Coding | 1218 | 1438 |
| FrontierCode | — | 27% |
| LMArena WebDev | — | 1397 |
| SciCode | — | 49.9% |
| WeirdML | — | 60.3% |
| ALE-Bench | — | 1,189 |

## Agentic & Tool Use

- Gemini 1.5 Flash 8B: —
- GPT-5.4 mini: 29.9 (#81)

| Benchmark | Gemini 1.5 Flash 8B | GPT-5.4 mini |
|---|---|---|
| DeepResearch Bench | — | 36.3% |

## Reasoning

- Gemini 1.5 Flash 8B: 20.0 (#244)
- GPT-5.4 mini: 30.4 (#85)

| Benchmark | Gemini 1.5 Flash 8B | GPT-5.4 mini |
|---|---|---|
| LMArena Hard Prompts | 1209 | 1424 |
| DTBench | 50% | 80% |
| ARC-AGI-2 | — | 18.9% |
| Kagi LLM Benchmark | — | 37.9% |
| NYT Connections (extended) | — | 61.8% |
| ARC-AGI-1 | — | 63.7% |
| CritPt | — | 10% |
| Chess Puzzles | — | 24% |
| Thematic Generalization | — | 61.7% |
| Mystery Game Puzzles | — | 11% |
| LMCA | — | 40.8% |
| Epoch Capabilities Index | — | 148.84 |
| ForecastBench | — | 57 |

## Math

- Gemini 1.5 Flash 8B: 14.2 (#302)
- GPT-5.4 mini: 45.5 (#75)

| Benchmark | Gemini 1.5 Flash 8B | GPT-5.4 mini |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 4.6% | 88.9% |
| LMArena Math | 1207 | 1419 |
| FrontierMath (Tiers 1-3) | — | 51.2% |
| FrontierMath Tier 4 | — | 9.8% |
| ProofBench | — | 21% |
| FrontierMath (Feb 2025 set) | — | 28.3% |
| FrontierMath Tier 4 (v1) | — | 2.1% |

## Knowledge

- Gemini 1.5 Flash 8B: 16.0 (#289)
- GPT-5.4 mini: 51.5 (#67)

| Benchmark | Gemini 1.5 Flash 8B | GPT-5.4 mini |
|---|---|---|
| GPQA Diamond | 33% | 86.9% |
| LMArena Expert | 1185 | 1435 |
| SimpleQA Verified | — | 29.4% |
| Vectara Hallucination Rate | — | 5.5% |

## Multimodal

- Gemini 1.5 Flash 8B: 28.2 (#115)
- GPT-5.4 mini: 39.7 (#56)

| Benchmark | Gemini 1.5 Flash 8B | GPT-5.4 mini |
|---|---|---|
| LMArena Vision | 1044 | 1245 |

## Multilingual

- Gemini 1.5 Flash 8B: 38.5 (#229)
- GPT-5.4 mini: 51.9 (#96)

| Benchmark | Gemini 1.5 Flash 8B | GPT-5.4 mini |
|---|---|---|
| LMArena Non-English | 1215 | 1405 |
| LMArena Chinese | 1231 | 1446 |
| LMArena French | 1234 | 1440 |
| LMArena German | 1206 | 1409 |
| LMArena Japanese | 1150 | 1374 |
| LMArena Korean | 1140 | 1368 |
| LMArena Russian | 1236 | 1417 |
| LMArena Spanish | 1212 | 1405 |

## Instruction Following

- Gemini 1.5 Flash 8B: 62.8 (#236)
- GPT-5.4 mini: 74.1 (#102)

| Benchmark | Gemini 1.5 Flash 8B | GPT-5.4 mini |
|---|---|---|
| LMArena Instruction Following | 1199 | 1405 |

## Long Context

- Gemini 1.5 Flash 8B: 37.0 (#225)
- GPT-5.4 mini: 43.0 (#112)

| Benchmark | Gemini 1.5 Flash 8B | GPT-5.4 mini |
|---|---|---|
| LMArena Longer Query | 1219 | 1407 |

## Writing & Preference

- Gemini 1.5 Flash 8B: 42.8 (#232)
- GPT-5.4 mini: 64.0 (#58)

| Benchmark | Gemini 1.5 Flash 8B | GPT-5.4 mini |
|---|---|---|
| LMArena Text | 1226 | 1412 |
| LMArena Creative Writing | 1218 | 1370 |
| LMArena Multi-Turn | 1185 | 1429 |
| EQ-Bench Creative Writing | — | 1665 |

## FAQ

### Is Gemini 1.5 Flash 8B better than GPT-5.4 mini?

GPT-5.4 mini is the stronger model overall, scoring 45.0 to 29.9 on the Noometry Index.

### Is Gemini 1.5 Flash 8B or GPT-5.4 mini better for coding?

GPT-5.4 mini scores higher on coding benchmarks: 45.2 versus 35.5 in the Noometry coding category.

### How many benchmarks do Gemini 1.5 Flash 8B and GPT-5.4 mini share?

21 benchmarks have published results for both models. Gemini 1.5 Flash 8B has 21 scored results on Noometry and GPT-5.4 mini has 46.