# Gemini 3.5 Flash Lite vs GPT-5 Mini

> Gemini 3.5 Flash Lite and GPT-5 Mini score almost the same on the Noometry Index (41.8 vs 41.7), so choose on price, context window or the category you care about most.

- Canonical page: https://noometry.com/compare/gemini-3-5-flash-lite-vs-gpt-5-mini
- Last updated: 2026-10-10
- Shared benchmarks: 35

## Summary

- They share 35 benchmarks with published results for both. Gemini 3.5 Flash Lite scores higher in 7 categories and GPT-5 Mini in 3 categories; 10 gaps are clear of the uncertainty.
- The widest gap is in math, where GPT-5 Mini leads 46.3 to 25.7.
- The biggest single-benchmark swing is FrontierMath (Tiers 1-3): 26% for Gemini 3.5 Flash Lite and 46.7% for GPT-5 Mini.
- GPT-5 Mini is cheaper at $0.25 / $2 per million input/output tokens, against $0.30 / $2.50 for Gemini 3.5 Flash Lite.
- Gemini 3.5 Flash Lite accepts more context: 1.05M tokens versus 400K.

## Snapshot

| | Gemini 3.5 Flash Lite | GPT-5 Mini |
|---|---|---|
| Provider | Google | OpenAI |
| Noometry Index | 41.8 | 41.7 |
| Rank | 113 | 115 |
| Context | 1.05M | 400K |
| Input $/M | $0.30 | $0.25 |
| Output $/M | $2.50 | $2 |
| Weights | Proprietary | Proprietary |

## Coding

- Gemini 3.5 Flash Lite: 42.1 (#96)
- GPT-5 Mini: 40.0 (#134)

| Benchmark | Gemini 3.5 Flash Lite | GPT-5 Mini |
|---|---|---|
| SciCode | 41.3% | 39.2% |
| WeirdML | 39% | 52.7% |
| LMArena Coding | 1455 | 1406 |
| ALE-Bench | 765.27 | 799.77 |
| SWE-bench Verified | — | 64.7% |
| SWE-bench Verified (bash only) | — | 59.8% |
| LMArena WebDev | 1440 | — |
| SWE-bench Multilingual | — | 39.7% |
| AlgoTune | — | 1.38 |

## Agentic & Tool Use

- Gemini 3.5 Flash Lite: 28.6 (#82)
- GPT-5 Mini: 31.0 (#64)

| Benchmark | Gemini 3.5 Flash Lite | GPT-5 Mini |
|---|---|---|
| Terminal-Bench | — | 34.8% |
| Berkeley Function Calling Leaderboard | — | 55.5% |
| GDP.pdf | 10% | — |
| Vending-Bench 2 | — | -31.18 |

## Reasoning

- Gemini 3.5 Flash Lite: 27.8 (#95)
- GPT-5 Mini: 24.1 (#153)

| Benchmark | Gemini 3.5 Flash Lite | GPT-5 Mini |
|---|---|---|
| ARC-AGI-2 | 10.3% | 4.4% |
| ARC-AGI-1 | 53.5% | 54.3% |
| CritPt | 0% | 0% |
| Chess Puzzles | 22% | 30% |
| LMArena Hard Prompts | 1441 | 1380 |
| Mystery Game Puzzles | 19% | 10% |
| DTBench | 83.5% | 80.5% |
| LMCA | 37.6% | 34.2% |
| Epoch Capabilities Index | 145.12 | 145.51 |
| Kagi LLM Benchmark | — | 70.3% |
| NYT Connections (extended) | 60.4% | — |
| EnigmaEval | — | 8.2% |
| ForecastBench | — | 61 |

## Math

- Gemini 3.5 Flash Lite: 25.7 (#245)
- GPT-5 Mini: 46.3 (#59)

| Benchmark | Gemini 3.5 Flash Lite | GPT-5 Mini |
|---|---|---|
| FrontierMath (Tiers 1-3) | 26% | 46.7% |
| FrontierMath Tier 4 | 0% | 12.2% |
| OTIS Mock AIME 2024-2025 | 71.1% | 86.7% |
| ProofBench | 13% | 9% |
| LMArena Math | 1431 | 1377 |
| Omni-MATH | — | 72.2% |
| MATH Level 5 | — | 97.8% |
| FrontierMath (Feb 2025 set) | — | 27.2% |
| FrontierMath Tier 4 (v1) | — | 6.3% |

## Knowledge

- Gemini 3.5 Flash Lite: 50.0 (#66)
- GPT-5 Mini: 45.5 (#80)

| Benchmark | Gemini 3.5 Flash Lite | GPT-5 Mini |
|---|---|---|
| GPQA Diamond | 83.3% | 75% |
| LMArena Expert | 1430 | 1377 |
| Humanity's Last Exam | — | 19.4% |
| SimpleQA Verified | — | 21.6% |
| MMLU-Pro | — | 83.5% |
| Confabulations | — | 13.3% |
| Vectara Hallucination Rate | — | 12.9% |
| GPQA (HELM) | — | 75.6% |

## Multimodal

- Gemini 3.5 Flash Lite: 40.3 (#38)
- GPT-5 Mini: 35.0 (#80)

| Benchmark | Gemini 3.5 Flash Lite | GPT-5 Mini |
|---|---|---|
| LMArena Vision | 1266 | 1202 |
| VPCT | — | 40.2% |

## Multilingual

- Gemini 3.5 Flash Lite: 53.8 (#59)
- GPT-5 Mini: 49.1 (#131)

| Benchmark | Gemini 3.5 Flash Lite | GPT-5 Mini |
|---|---|---|
| LMArena Non-English | 1428 | 1363 |
| LMArena Chinese | 1467 | 1387 |
| LMArena French | 1452 | 1385 |
| LMArena German | 1454 | 1366 |
| LMArena Japanese | 1428 | 1342 |
| LMArena Korean | 1406 | 1306 |
| LMArena Russian | 1443 | 1362 |
| LMArena Spanish | 1440 | 1355 |

## Instruction Following

- Gemini 3.5 Flash Lite: 75.0 (#77)
- GPT-5 Mini: 76.4 (#43)

| Benchmark | Gemini 3.5 Flash Lite | GPT-5 Mini |
|---|---|---|
| LMArena Instruction Following | 1420 | 1357 |
| IFEval | — | 92.7% |

## Long Context

- Gemini 3.5 Flash Lite: 43.8 (#80)
- GPT-5 Mini: 41.9 (#127)

| Benchmark | Gemini 3.5 Flash Lite | GPT-5 Mini |
|---|---|---|
| LMArena Longer Query | 1435 | 1355 |
| Fiction.LiveBench | — | 69.4% |

## Writing & Preference

- Gemini 3.5 Flash Lite: 64.4 (#55)
- GPT-5 Mini: 55.4 (#143)

| Benchmark | Gemini 3.5 Flash Lite | GPT-5 Mini |
|---|---|---|
| LMArena Text | 1436 | 1373 |
| LMArena Creative Writing | 1419 | 1325 |
| EQ-Bench Creative Writing | 1559 | 1313 |
| LMArena Multi-Turn | 1445 | 1363 |
| Short-Story Creative Writing | — | 83.1% |
| WildBench | — | 85.5% |

## FAQ

### Is Gemini 3.5 Flash Lite better than GPT-5 Mini?

Gemini 3.5 Flash Lite and GPT-5 Mini score almost the same on the Noometry Index (41.8 vs 41.7), so choose on price, context window or the category you care about most.

### Which is cheaper, Gemini 3.5 Flash Lite or GPT-5 Mini?

GPT-5 Mini is cheaper. It lists at $0.25 per million input tokens and $2 per million output tokens; Gemini 3.5 Flash Lite lists at $0.30 and $2.50.

### Is Gemini 3.5 Flash Lite or GPT-5 Mini better for coding?

Gemini 3.5 Flash Lite scores higher on coding benchmarks: 42.1 versus 40.0 in the Noometry coding category.

### Which has the bigger context window?

Gemini 3.5 Flash Lite does, with 1.05M tokens against 400K.

### How many benchmarks do Gemini 3.5 Flash Lite and GPT-5 Mini share?

35 benchmarks have published results for both models. Gemini 3.5 Flash Lite has 38 scored results on Noometry and GPT-5 Mini has 60.