# Gemini 3 Flash Preview vs GPT-5.4 Pro

> GPT-5.4 Pro is the stronger model overall, scoring 58.8 to 52.3 on the Noometry Index. Gemini 3 Flash Preview costs 60× less per token, which makes it the better buy when GPT-5.4 Pro's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/gemini-3-flash-preview-vs-gpt-5-4-pro
- Last updated: 2026-10-10
- Shared benchmarks: 13

## Summary

- They share 13 benchmarks with published results for both. Gemini 3 Flash Preview scores higher in 1 category and GPT-5.4 Pro in 3 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where GPT-5.4 Pro leads 71.0 to 49.2.
- The biggest single-benchmark swing is ARC-AGI-2: 33.6% for Gemini 3 Flash Preview and 83.3% for GPT-5.4 Pro.
- Gemini 3 Flash Preview is cheaper at $0.50 / $3 per million input/output tokens, against $30 / $180 for GPT-5.4 Pro.
- GPT-5.4 Pro accepts more context: 1.05M tokens versus 1.05M.

## Snapshot

| | Gemini 3 Flash Preview | GPT-5.4 Pro |
|---|---|---|
| Provider | Google | OpenAI |
| Noometry Index | 52.3 | 58.8 |
| Rank | 33 | 16 |
| Context | 1.05M | 1.05M |
| Input $/M | $0.50 | $30 |
| Output $/M | $3 | $180 |
| Weights | Proprietary | Proprietary |

## Coding

- Gemini 3 Flash Preview: 51.5 (#35)
- GPT-5.4 Pro: 42.6 (#89)

| Benchmark | Gemini 3 Flash Preview | GPT-5.4 Pro |
|---|---|---|
| WeirdML | 61.6% | 57.4% |
| SWE-bench Verified | 75.4% | — |
| SWE-bench Verified (bash only) | 75.8% | — |
| LMArena WebDev | 1439 | — |
| SWE-bench Multilingual | 72.7% | — |
| GSO | 9.8% | — |
| LMArena Coding | 1460 | — |
| ALE-Bench | 1,367 | — |

## Agentic & Tool Use

- Gemini 3 Flash Preview: 38.6 (#27)
- GPT-5.4 Pro: —

| Benchmark | Gemini 3 Flash Preview | GPT-5.4 Pro |
|---|---|---|
| Terminal-Bench | 64.3% | — |
| τ²-bench Airline | 82.5% | — |
| τ²-bench Banking | 27.3% | — |
| τ²-bench Retail | 76.8% | — |
| τ²-bench Telecom | 91.2% | — |
| DeepResearch Bench | 49.8% | — |
| BALROG | 48.1% | — |
| GDP.pdf | 10% | — |
| LMArena Search | 1198 | — |
| Vending-Bench 2 | 3,635 | — |

## Reasoning

- Gemini 3 Flash Preview: 49.2 (#35)
- GPT-5.4 Pro: 71.0 (#10)

| Benchmark | Gemini 3 Flash Preview | GPT-5.4 Pro |
|---|---|---|
| ARC-AGI-2 | 33.6% | 83.3% |
| SimpleBench | 61.1% | 74.1% |
| ARC-AGI-1 | 84.7% | 94.5% |
| Chess Puzzles | 40% | 58.6% |
| Epoch Capabilities Index | 151.83 | 159.12 |
| NYT Connections (extended) | 83.1% | — |
| CritPt | — | 30% |
| EnigmaEval | — | 23.8% |
| LMArena Hard Prompts | 1465 | — |
| Mystery Game Puzzles | 26% | — |
| DTBench | 89.1% | — |
| LMCA | 43.1% | — |
| ForecastBench | 58.5 | — |

## Math

- Gemini 3 Flash Preview: 51.4 (#42)
- GPT-5.4 Pro: 72.0 (#17)

| Benchmark | Gemini 3 Flash Preview | GPT-5.4 Pro |
|---|---|---|
| FrontierMath (Tiers 1-3) | 51.2% | 82.5% |
| FrontierMath Tier 4 | 17.1% | 58.5% |
| FrontierMath (Feb 2025 set) | 35.6% | 50% |
| FrontierMath Tier 4 (v1) | 4.2% | 37.5% |
| MathArena Final-Answer Competitions | 67.6% | — |
| OTIS Mock AIME 2024-2025 | 95.6% | — |
| ProofBench | 15% | — |
| LMArena Math | 1472 | — |

## Knowledge

- Gemini 3 Flash Preview: 58.8 (#30)
- GPT-5.4 Pro: 68.3 (#6)

| Benchmark | Gemini 3 Flash Preview | GPT-5.4 Pro |
|---|---|---|
| GPQA Diamond | 89.4% | 94.6% |
| SimpleQA Verified | 66.8% | 46.3% |
| Vectara Hallucination Rate | 13.5% | 8.3% |
| Humanity's Last Exam | — | 44.3% |
| LMArena Expert | 1461 | — |

## Multimodal

- Gemini 3 Flash Preview: 45.3 (#15)
- GPT-5.4 Pro: —

| Benchmark | Gemini 3 Flash Preview | GPT-5.4 Pro |
|---|---|---|
| LMArena Vision | 1285 | — |
| GeoBench | 88% | — |
| VPCT | 72.6% | — |
| Blueprint-Bench 2 | 0% | — |
| LMArena Document | 1413 | — |

## Multilingual

- Gemini 3 Flash Preview: 55.9 (#26)
- GPT-5.4 Pro: —

| Benchmark | Gemini 3 Flash Preview | GPT-5.4 Pro |
|---|---|---|
| LMArena Non-English | 1458 | — |
| LMArena Chinese | 1510 | — |
| LMArena French | 1478 | — |
| LMArena German | 1497 | — |
| LMArena Japanese | 1488 | — |
| LMArena Korean | 1443 | — |
| LMArena Russian | 1480 | — |
| LMArena Spanish | 1470 | — |

## Instruction Following

- Gemini 3 Flash Preview: 75.8 (#52)
- GPT-5.4 Pro: —

| Benchmark | Gemini 3 Flash Preview | GPT-5.4 Pro |
|---|---|---|
| LMArena Instruction Following | 1437 | — |

## Long Context

- Gemini 3 Flash Preview: 44.4 (#63)
- GPT-5.4 Pro: —

| Benchmark | Gemini 3 Flash Preview | GPT-5.4 Pro |
|---|---|---|
| LMArena Longer Query | 1452 | — |

## Writing & Preference

- Gemini 3 Flash Preview: 65.6 (#44)
- GPT-5.4 Pro: —

| Benchmark | Gemini 3 Flash Preview | GPT-5.4 Pro |
|---|---|---|
| LMArena Text | 1466 | — |
| LMArena Creative Writing | 1457 | — |
| LMArena Multi-Turn | 1471 | — |

## FAQ

### Is Gemini 3 Flash Preview better than GPT-5.4 Pro?

GPT-5.4 Pro is the stronger model overall, scoring 58.8 to 52.3 on the Noometry Index. Gemini 3 Flash Preview costs 60× less per token, which makes it the better buy when GPT-5.4 Pro's lead doesn't matter for your workload.

### Which is cheaper, Gemini 3 Flash Preview or GPT-5.4 Pro?

Gemini 3 Flash Preview is cheaper. It lists at $0.50 per million input tokens and $3 per million output tokens; GPT-5.4 Pro lists at $30 and $180.

### Is Gemini 3 Flash Preview or GPT-5.4 Pro better for coding?

Gemini 3 Flash Preview scores higher on coding benchmarks: 51.5 versus 42.6 in the Noometry coding category.

### Which has the bigger context window?

GPT-5.4 Pro does, with 1.05M tokens against 1.05M.

### How many benchmarks do Gemini 3 Flash Preview and GPT-5.4 Pro share?

13 benchmarks have published results for both models. Gemini 3 Flash Preview has 59 scored results on Noometry and GPT-5.4 Pro has 16.