# Gemini 3.5 Flash Lite vs Grok 4.3

> Grok 4.3 is the stronger model overall, scoring 43.6 to 41.8 on the Noometry Index. Gemini 3.5 Flash Lite costs 1.8× less per token, which makes it the better buy when Grok 4.3's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/gemini-3-5-flash-lite-vs-grok-4-3
- Last updated: 2026-10-10
- Shared benchmarks: 34

## Summary

- They share 34 benchmarks with published results for both. Gemini 3.5 Flash Lite scores higher in 7 categories and Grok 4.3 in 3 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in math, where Grok 4.3 leads 45.8 to 25.7.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 71.1% for Gemini 3.5 Flash Lite and 93.3% for Grok 4.3.
- Gemini 3.5 Flash Lite is cheaper at $0.30 / $2.50 per million input/output tokens, against $1.25 / $2.50 for Grok 4.3.
- Gemini 3.5 Flash Lite accepts more context: 1.05M tokens versus 1M.

## Snapshot

| | Gemini 3.5 Flash Lite | Grok 4.3 |
|---|---|---|
| Provider | Google | xAI |
| Noometry Index | 41.8 | 43.6 |
| Rank | 113 | 80 |
| Context | 1.05M | 1M |
| Input $/M | $0.30 | $1.25 |
| Output $/M | $2.50 | $2.50 |
| Weights | Proprietary | Proprietary |

## Coding

- Gemini 3.5 Flash Lite: 42.1 (#96)
- Grok 4.3: 41.3 (#117)

| Benchmark | Gemini 3.5 Flash Lite | Grok 4.3 |
|---|---|---|
| LMArena WebDev | 1440 | 1357 |
| SciCode | 41.3% | 47.3% |
| WeirdML | 39% | 49.9% |
| LMArena Coding | 1455 | 1415 |
| ALE-Bench | 765.27 | 944.17 |

## Agentic & Tool Use

- Gemini 3.5 Flash Lite: 28.6 (#82)
- Grok 4.3: 27.6 (#93)

| Benchmark | Gemini 3.5 Flash Lite | Grok 4.3 |
|---|---|---|
| GDP.pdf | 10% | 8% |
| LMArena Search | — | 1165 |
| Vending-Bench 2 | — | 35.26 |

## Reasoning

- Gemini 3.5 Flash Lite: 27.8 (#95)
- Grok 4.3: 34.9 (#60)

| Benchmark | Gemini 3.5 Flash Lite | Grok 4.3 |
|---|---|---|
| NYT Connections (extended) | 60.4% | 55.2% |
| CritPt | 0% | 8% |
| Chess Puzzles | 22% | 25% |
| LMArena Hard Prompts | 1441 | 1397 |
| DTBench | 83.5% | 90.7% |
| LMCA | 37.6% | 38.3% |
| Epoch Capabilities Index | 145.12 | 149.13 |
| ARC-AGI-2 | 10.3% | — |
| ARC-AGI-1 | 53.5% | — |
| Mystery Game Puzzles | 19% | — |
| ForecastBench | — | 60.3 |

## Math

- Gemini 3.5 Flash Lite: 25.7 (#245)
- Grok 4.3: 45.8 (#60)

| Benchmark | Gemini 3.5 Flash Lite | Grok 4.3 |
|---|---|---|
| FrontierMath (Tiers 1-3) | 26% | 42.8% |
| FrontierMath Tier 4 | 0% | 14.6% |
| OTIS Mock AIME 2024-2025 | 71.1% | 93.3% |
| ProofBench | 13% | 11% |
| LMArena Math | 1431 | 1388 |

## Knowledge

- Gemini 3.5 Flash Lite: 50.0 (#66)
- Grok 4.3: 52.5 (#57)

| Benchmark | Gemini 3.5 Flash Lite | Grok 4.3 |
|---|---|---|
| GPQA Diamond | 83.3% | 88.8% |
| LMArena Expert | 1430 | 1385 |
| SimpleQA Verified | — | 33.2% |

## Multimodal

- Gemini 3.5 Flash Lite: 40.3 (#38)
- Grok 4.3: 31.6 (#96)

| Benchmark | Gemini 3.5 Flash Lite | Grok 4.3 |
|---|---|---|
| LMArena Vision | 1266 | 1231 |
| Blueprint-Bench 2 | — | 0% |

## Multilingual

- Gemini 3.5 Flash Lite: 53.8 (#59)
- Grok 4.3: 50.7 (#114)

| Benchmark | Gemini 3.5 Flash Lite | Grok 4.3 |
|---|---|---|
| LMArena Non-English | 1428 | 1385 |
| LMArena Chinese | 1467 | 1423 |
| LMArena French | 1452 | 1412 |
| LMArena German | 1454 | 1395 |
| LMArena Japanese | 1428 | 1379 |
| LMArena Korean | 1406 | 1357 |
| LMArena Russian | 1443 | 1399 |
| LMArena Spanish | 1440 | 1402 |

## Instruction Following

- Gemini 3.5 Flash Lite: 75.0 (#77)
- Grok 4.3: 72.3 (#135)

| Benchmark | Gemini 3.5 Flash Lite | Grok 4.3 |
|---|---|---|
| LMArena Instruction Following | 1420 | 1366 |

## Long Context

- Gemini 3.5 Flash Lite: 43.8 (#80)
- Grok 4.3: 42.5 (#118)

| Benchmark | Gemini 3.5 Flash Lite | Grok 4.3 |
|---|---|---|
| LMArena Longer Query | 1435 | 1393 |

## Writing & Preference

- Gemini 3.5 Flash Lite: 64.4 (#55)
- Grok 4.3: 58.6 (#112)

| Benchmark | Gemini 3.5 Flash Lite | Grok 4.3 |
|---|---|---|
| LMArena Text | 1436 | 1397 |
| LMArena Creative Writing | 1419 | 1380 |
| LMArena Multi-Turn | 1445 | 1406 |
| EQ-Bench Creative Writing | 1559 | — |
| EQ-Bench 4 | — | 1075 |

## FAQ

### Is Gemini 3.5 Flash Lite better than Grok 4.3?

Grok 4.3 is the stronger model overall, scoring 43.6 to 41.8 on the Noometry Index. Gemini 3.5 Flash Lite costs 1.8× less per token, which makes it the better buy when Grok 4.3's lead doesn't matter for your workload.

### Which is cheaper, Gemini 3.5 Flash Lite or Grok 4.3?

Gemini 3.5 Flash Lite is cheaper. It lists at $0.30 per million input tokens and $2.50 per million output tokens; Grok 4.3 lists at $1.25 and $2.50.

### Is Gemini 3.5 Flash Lite or Grok 4.3 better for coding?

They score almost the same on coding (42.1 vs 41.3); test both on your own repository before choosing.

### Which has the bigger context window?

Gemini 3.5 Flash Lite does, with 1.05M tokens against 1M.

### How many benchmarks do Gemini 3.5 Flash Lite and Grok 4.3 share?

34 benchmarks have published results for both models. Gemini 3.5 Flash Lite has 38 scored results on Noometry and Grok 4.3 has 40.