# Gemini 3.5 Flash Lite vs GPT-5.6 Sol

> GPT-5.6 Sol is the stronger model overall, scoring 65.0 to 41.5 on the Noometry Index. Gemini 3.5 Flash Lite costs 9.4× less per token, which makes it the better buy when GPT-5.6 Sol's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/gemini-3-5-flash-lite-vs-gpt-5-6-sol
- Last updated: 2026-10-12
- Shared benchmarks: 39

## Summary

- They share 39 benchmarks with published results for both. Gemini 3.5 Flash Lite scores higher in 0 categories and GPT-5.6 Sol in 10 categories; 10 gaps are clear of the uncertainty.
- The widest gap is in math, where GPT-5.6 Sol leads 85.6 to 25.9.
- The biggest single-benchmark swing is FrontierMath Tier 4: 0% for Gemini 3.5 Flash Lite and 82.9% for GPT-5.6 Sol.
- Gemini 3.5 Flash Lite is cheaper at $0.30 / $2.50 per million input/output tokens, against $4 / $20 for GPT-5.6 Sol.
- GPT-5.6 Sol accepts more context: 1.05M tokens versus 1.05M.

## Snapshot

| | Gemini 3.5 Flash Lite | GPT-5.6 Sol |
|---|---|---|
| Provider | Google | OpenAI |
| Noometry Index | 41.5 | 65.0 |
| Rank | 133 | 7 |
| Context | 1.05M | 1.05M |
| Input $/M | $0.30 | $4 |
| Output $/M | $2.50 | $20 |
| Weights | Proprietary | Proprietary |

## Coding

- Gemini 3.5 Flash Lite: 42.4 (#104)
- GPT-5.6 Sol: 65.1 (#7)

| Benchmark | Gemini 3.5 Flash Lite | GPT-5.6 Sol |
|---|---|---|
| LMArena WebDev | 1440 | 1618 |
| SciCode | 41.3% | 57.1% |
| WeirdML | 39% | 89.4% |
| LMArena Coding | 1453 | 1498 |
| ALE-Bench | 765.27 | 2,177 |
| DeepSWE | — | 72.7% |
| FrontierCode | — | 47.5% |
| CursorBench | — | 41.7% |
| FrontierSWE | — | 32.2% |
| GSO | — | 76.5% |
| MirrorCode | — | 20% |

## Agentic & Tool Use

- Gemini 3.5 Flash Lite: 25.7 (#107)
- GPT-5.6 Sol: 50.3 (#7)

| Benchmark | Gemini 3.5 Flash Lite | GPT-5.6 Sol |
|---|---|---|
| APEX-Agents | 29.3% | 51.4% |
| GDP.pdf | 10% | 30.7% |
| OSWorld 2.0 | — | 27.3% |
| τ²-bench Banking | — | 46.9% |
| PostTrainBench | — | 36.2% |
| BALROG | — | 60% |
| GBAEval | — | 52.6% |
| LMArena Search | — | 1257 |
| Vending-Bench 2 | — | 9,619 |

## Reasoning

- Gemini 3.5 Flash Lite: 27.8 (#114)
- GPT-5.6 Sol: 74.8 (#8)

| Benchmark | Gemini 3.5 Flash Lite | GPT-5.6 Sol |
|---|---|---|
| ARC-AGI-2 | 10.3% | 92.5% |
| NYT Connections (extended) | 60.4% | 93.8% |
| ARC-AGI-1 | 53.5% | 97.5% |
| CritPt | 0% | 32.3% |
| Chess Puzzles | 22% | 64% |
| LMArena Hard Prompts | 1441 | 1484 |
| Mystery Game Puzzles | 19% | 58% |
| DTBench | 83.5% | 96% |
| LMCA | 37.6% | 59.2% |
| Epoch Capabilities Index | 145.13 | 161.66 |
| SimpleBench | — | 71.7% |
| Kagi LLM Benchmark | — | 67% |
| EnigmaEval | — | 37.1% |
| EBR-Bench | — | 44.8% |
| Surface Evolver Bench | — | 93.1% |
| Bench to the Future 3 | — | 0.14 |

## Math

- Gemini 3.5 Flash Lite: 25.9 (#264)
- GPT-5.6 Sol: 85.6 (#9)

| Benchmark | Gemini 3.5 Flash Lite | GPT-5.6 Sol |
|---|---|---|
| FrontierMath (Tiers 1-3) | 26% | 89.1% |
| FrontierMath Tier 4 | 0% | 82.9% |
| OTIS Mock AIME 2024-2025 | 71.1% | 100% |
| ProofBench | 13% | 83% |
| LMArena Math | 1433 | 1474 |
| FrontierMath Erdős | — | 0% |

## Knowledge

- Gemini 3.5 Flash Lite: 50.1 (#72)
- GPT-5.6 Sol: 64.3 (#18)

| Benchmark | Gemini 3.5 Flash Lite | GPT-5.6 Sol |
|---|---|---|
| GPQA Diamond | 83.3% | 93.5% |
| LMArena Expert | 1435 | 1516 |
| SimpleQA Verified | — | 69.7% |
| Vectara Hallucination Rate | — | 12.4% |

## Multimodal

- Gemini 3.5 Flash Lite: 41.1 (#40)
- GPT-5.6 Sol: 48.6 (#9)

| Benchmark | Gemini 3.5 Flash Lite | GPT-5.6 Sol |
|---|---|---|
| LMArena Vision | 1268 | 1281 |
| Blueprint-Bench 2 | — | 33.6% |
| Furniture Assembly | — | 56.7% |
| LMArena Document | — | 1483 |

## Multilingual

- Gemini 3.5 Flash Lite: 53.5 (#63)
- GPT-5.6 Sol: 55.3 (#32)

| Benchmark | Gemini 3.5 Flash Lite | GPT-5.6 Sol |
|---|---|---|
| LMArena Non-English | 1427 | 1452 |
| LMArena Chinese | 1469 | 1527 |
| LMArena French | 1451 | 1477 |
| LMArena German | 1454 | 1476 |
| LMArena Japanese | 1427 | 1471 |
| LMArena Korean | 1407 | 1442 |
| LMArena Russian | 1443 | 1468 |
| LMArena Spanish | 1442 | 1441 |

## Instruction Following

- Gemini 3.5 Flash Lite: 74.8 (#85)
- GPT-5.6 Sol: 77.7 (#16)

| Benchmark | Gemini 3.5 Flash Lite | GPT-5.6 Sol |
|---|---|---|
| LMArena Instruction Following | 1420 | 1482 |

## Long Context

- Gemini 3.5 Flash Lite: 43.9 (#84)
- GPT-5.6 Sol: 45.4 (#42)

| Benchmark | Gemini 3.5 Flash Lite | GPT-5.6 Sol |
|---|---|---|
| LMArena Longer Query | 1435 | 1480 |

## Writing & Preference

- Gemini 3.5 Flash Lite: 64.2 (#57)
- GPT-5.6 Sol: 73.3 (#12)

| Benchmark | Gemini 3.5 Flash Lite | GPT-5.6 Sol |
|---|---|---|
| LMArena Text | 1435 | 1457 |
| LMArena Creative Writing | 1420 | 1448 |
| EQ-Bench Creative Writing | 1559 | 1972 |
| LMArena Multi-Turn | 1445 | 1460 |
| EQ-Bench 4 | — | 1250 |

## FAQ

### Is Gemini 3.5 Flash Lite better than GPT-5.6 Sol?

GPT-5.6 Sol is the stronger model overall, scoring 65.0 to 41.5 on the Noometry Index. Gemini 3.5 Flash Lite costs 9.4× less per token, which makes it the better buy when GPT-5.6 Sol's lead doesn't matter for your workload.

### Which is cheaper, Gemini 3.5 Flash Lite or GPT-5.6 Sol?

Gemini 3.5 Flash Lite is cheaper. It lists at $0.30 per million input tokens and $2.50 per million output tokens; GPT-5.6 Sol lists at $4 and $20.

### Is Gemini 3.5 Flash Lite or GPT-5.6 Sol better for coding?

GPT-5.6 Sol scores higher on coding benchmarks: 65.1 versus 42.4 in the Noometry coding category.

### Which has the bigger context window?

GPT-5.6 Sol does, with 1.05M tokens against 1.05M.

### How many benchmarks do Gemini 3.5 Flash Lite and GPT-5.6 Sol share?

39 benchmarks have published results for both models. Gemini 3.5 Flash Lite has 39 scored results on Noometry and GPT-5.6 Sol has 65.