# Claude 3.5 Sonnet vs Gemini 3.1 Flash Lite

> Gemini 3.1 Flash Lite is the stronger model overall, scoring 40.8 to 34.6 on the Noometry Index.

- Canonical page: https://noometry.com/compare/claude-3-5-sonnet-vs-gemini-3-1-flash-lite
- Last updated: 2026-10-12
- Shared benchmarks: 26

## Summary

- They share 26 benchmarks with published results for both. Claude 3.5 Sonnet scores higher in 3 categories and Gemini 3.1 Flash Lite in 7 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in math, where Gemini 3.1 Flash Lite leads 40.7 to 19.2.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 8.5% for Claude 3.5 Sonnet and 80% for Gemini 3.1 Flash Lite.

## Snapshot

| | Claude 3.5 Sonnet | Gemini 3.1 Flash Lite |
|---|---|---|
| Provider | Anthropic | Google |
| Noometry Index | 34.6 | 40.8 |
| Rank | 231 | 144 |
| Context | — | 1.05M |
| Input $/M | — | $0.25 |
| Output $/M | — | $1.50 |
| Weights | Proprietary | Proprietary |

## Coding

- Claude 3.5 Sonnet: 39.0 (#165)
- Gemini 3.1 Flash Lite: 37.8 (#188)

| Benchmark | Claude 3.5 Sonnet | Gemini 3.1 Flash Lite |
|---|---|---|
| WeirdML | 40% | 52.2% |
| LMArena Coding | 1342 | 1400 |
| Aider Polyglot | 51.6% | — |
| LMArena WebDev | — | 1256 |
| SciCode | — | 41.9% |
| GSO | 4.6% | — |
| BigCodeBench Instruct | 46.8% | — |
| LiveBench Coding | 67.1% | — |
| BigCodeBench Complete | 58.6% | — |
| CadEval | 48% | — |
| ALE-Bench | — | 797.73 |
| HumanEval+ | 81.7% | — |
| MBPP+ | 74.3% | — |

## Agentic & Tool Use

- Claude 3.5 Sonnet: 32.3 (#67)
- Gemini 3.1 Flash Lite: 30.2 (#79)

| Benchmark | Claude 3.5 Sonnet | Gemini 3.1 Flash Lite |
|---|---|---|
| TheAgentCompany | 24% | — |
| Cybench | 17.5% | — |
| DeepResearch Bench | — | 37.3% |
| BALROG | 32.6% | — |
| METR Time Horizons | 45.2% | — |

## Reasoning

- Claude 3.5 Sonnet: 23.1 (#183)
- Gemini 3.1 Flash Lite: 22.9 (#186)

| Benchmark | Claude 3.5 Sonnet | Gemini 3.1 Flash Lite |
|---|---|---|
| EnigmaEval | 0.9% | 3% |
| LMArena Hard Prompts | 1305 | 1407 |
| DTBench | 67.8% | 76.8% |
| Epoch Capabilities Index | 133.55 | 144.47 |
| ForecastBench | 60.7 | 54.4 |
| SimpleBench | 41.4% | — |
| Kagi LLM Benchmark | — | 67.2% |
| NYT Connections (extended) | — | 8.2% |
| CritPt | — | 1.1% |
| Chess Puzzles | — | 25% |
| Thematic Generalization | — | 63.3% |
| LiveBench Reasoning | 56.7% | — |
| LiveBench Data Analysis | 55% | — |
| LMCA | — | 35% |
| LiveBench | 59% | — |

## Math

- Claude 3.5 Sonnet: 19.2 (#288)
- Gemini 3.1 Flash Lite: 40.7 (#90)

| Benchmark | Claude 3.5 Sonnet | Gemini 3.1 Flash Lite |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 8.5% | 80% |
| LMArena Math | 1307 | 1428 |
| FrontierMath (Tiers 1-3) | — | 27.7% |
| Omni-MATH | 27.6% | — |
| LiveBench Math | 52.3% | — |
| MATH Level 5 | 56.9% | — |
| FrontierMath (Feb 2025 set) | 2.1% | — |
| FrontierMath Tier 4 (v1) | 0% | — |

## Knowledge

- Claude 3.5 Sonnet: 28.6 (#245)
- Gemini 3.1 Flash Lite: 41.9 (#104)

| Benchmark | Claude 3.5 Sonnet | Gemini 3.1 Flash Lite |
|---|---|---|
| GPQA Diamond | 55.3% | 81.8% |
| Humanity's Last Exam | 4.1% | 8.6% |
| LMArena Expert | 1265 | 1398 |
| MMLU-Pro | 77.7% | — |
| Confabulations | 19.9% | — |
| Vectara Hallucination Rate | — | 8.2% |
| GPQA (HELM) | 56.5% | — |
| MMLU | 87.3% | — |

## Multimodal

- Claude 3.5 Sonnet: 26.5 (#120)
- Gemini 3.1 Flash Lite: 39.4 (#60)

| Benchmark | Claude 3.5 Sonnet | Gemini 3.1 Flash Lite |
|---|---|---|
| LMArena Vision | 1125 | 1240 |
| Video-MME | 60% | — |
| GeoBench | 62% | — |
| VPCT | 33% | — |

## Multilingual

- Claude 3.5 Sonnet: 43.2 (#185)
- Gemini 3.1 Flash Lite: 52.3 (#86)

| Benchmark | Claude 3.5 Sonnet | Gemini 3.1 Flash Lite |
|---|---|---|
| LMArena Non-English | 1283 | 1411 |
| LMArena Chinese | 1272 | 1461 |
| LMArena French | 1305 | 1424 |
| LMArena German | 1297 | 1429 |
| LMArena Japanese | 1234 | 1413 |
| LMArena Korean | 1200 | 1392 |
| LMArena Russian | 1306 | 1420 |
| LMArena Spanish | 1290 | 1421 |

## Instruction Following

- Claude 3.5 Sonnet: 68.8 (#182)
- Gemini 3.1 Flash Lite: 72.7 (#131)

| Benchmark | Claude 3.5 Sonnet | Gemini 3.1 Flash Lite |
|---|---|---|
| LMArena Instruction Following | 1297 | 1377 |
| LiveBench Instruction Following | 69.3% | — |
| IFEval | 85.5% | — |

## Long Context

- Claude 3.5 Sonnet: 39.9 (#167)
- Gemini 3.1 Flash Lite: 42.5 (#122)

| Benchmark | Claude 3.5 Sonnet | Gemini 3.1 Flash Lite |
|---|---|---|
| LMArena Longer Query | 1311 | 1394 |

## Writing & Preference

- Claude 3.5 Sonnet: 52.9 (#164)
- Gemini 3.1 Flash Lite: 60.9 (#94)

| Benchmark | Claude 3.5 Sonnet | Gemini 3.1 Flash Lite |
|---|---|---|
| LMArena Text | 1298 | 1416 |
| LMArena Creative Writing | 1292 | 1401 |
| LMArena Multi-Turn | 1326 | 1417 |
| Short-Story Creative Writing | 80.3% | — |
| EQ-Bench Creative Writing | 1451 | — |
| WildBench | 79.2% | — |
| LiveBench Language | 53.8% | — |

## FAQ

### Is Claude 3.5 Sonnet better than Gemini 3.1 Flash Lite?

Gemini 3.1 Flash Lite is the stronger model overall, scoring 40.8 to 34.6 on the Noometry Index.

### Is Claude 3.5 Sonnet or Gemini 3.1 Flash Lite better for coding?

Claude 3.5 Sonnet scores higher on coding benchmarks: 39.0 versus 37.8 in the Noometry coding category.

### How many benchmarks do Claude 3.5 Sonnet and Gemini 3.1 Flash Lite share?

26 benchmarks have published results for both models. Claude 3.5 Sonnet has 60 scored results on Noometry and Gemini 3.1 Flash Lite has 38.