# Claude Sonnet 5.5 vs Gemini 2.0 Flash-Lite

> Claude Sonnet 5.5 is the stronger model overall, scoring 61.9 to 37.8 on the Noometry Index.

- Canonical page: https://noometry.com/compare/claude-sonnet-5-5-vs-gemini-2-0-flash-lite
- Last updated: 2026-10-12
- Shared benchmarks: 13

## Summary

- They share 13 benchmarks with published results for both. Claude Sonnet 5.5 scores higher in 9 categories and Gemini 2.0 Flash-Lite in 0 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in math, where Claude Sonnet 5.5 leads 87.9 to 34.1.

## Snapshot

| | Claude Sonnet 5.5 | Gemini 2.0 Flash-Lite |
|---|---|---|
| Provider | Anthropic | Google |
| Noometry Index | 61.9 | 37.8 |
| Rank | 10 | 194 |
| Context | 1M | — |
| Input $/M | $2 | — |
| Output $/M | $10 | — |
| Weights | Proprietary | Proprietary |

## Coding

- Claude Sonnet 5.5: 67.3 (#6)
- Gemini 2.0 Flash-Lite: 37.9 (#185)

| Benchmark | Claude Sonnet 5.5 | Gemini 2.0 Flash-Lite |
|---|---|---|
| LMArena Coding | 1513 | 1322 |
| FrontierCode | 52.1% | — |
| CursorBench | 55.5% | — |
| LMArena WebDev | 1774 | — |
| FrontierSWE | 61.9% | — |
| SciCode | 61% | — |
| LiveBench Coding | — | 47.1% |
| ALE-Bench | 1,819 | — |

## Agentic & Tool Use

- Claude Sonnet 5.5: 45.0 (#16)
- Gemini 2.0 Flash-Lite: —

| Benchmark | Claude Sonnet 5.5 | Gemini 2.0 Flash-Lite |
|---|---|---|
| APEX-Agents | 75.5% | — |

## Reasoning

- Claude Sonnet 5.5: 54.0 (#28)
- Gemini 2.0 Flash-Lite: 22.0 (#210)

| Benchmark | Claude Sonnet 5.5 | Gemini 2.0 Flash-Lite |
|---|---|---|
| LMArena Hard Prompts | 1495 | 1324 |
| NYT Connections (extended) | 80.5% | — |
| CritPt | 31.4% | — |
| LiveBench Reasoning | — | 50.1% |
| Mystery Game Puzzles | 65% | — |
| DTBench | — | 52.5% |
| LiveBench Data Analysis | — | 65.5% |
| Epoch Capabilities Index | 165.03 | — |
| ForecastBench | — | 57.1 |
| LiveBench | — | 54.3% |

## Math

- Claude Sonnet 5.5: 87.9 (#6)
- Gemini 2.0 Flash-Lite: 34.1 (#196)

| Benchmark | Claude Sonnet 5.5 | Gemini 2.0 Flash-Lite |
|---|---|---|
| LMArena Math | 1510 | 1309 |
| FrontierMath (Tiers 1-3) | 88.8% | — |
| FrontierMath Tier 4 | 80.5% | — |
| OTIS Mock AIME 2024-2025 | 100% | — |
| ProofBench | 100% | — |
| Omni-MATH | — | 37.4% |
| LiveBench Math | — | 58.1% |
| FrontierMath Erdős | 2.9% | — |

## Knowledge

- Claude Sonnet 5.5: 66.0 (#12)
- Gemini 2.0 Flash-Lite: 35.0 (#189)

| Benchmark | Claude Sonnet 5.5 | Gemini 2.0 Flash-Lite |
|---|---|---|
| LMArena Expert | 1540 | 1305 |
| GPQA Diamond | 95.6% | — |
| SimpleQA Verified | 46.5% | — |
| MMLU-Pro | — | 72% |
| GPQA (HELM) | — | 50% |

## Multimodal

- Claude Sonnet 5.5: 51.5 (#6)
- Gemini 2.0 Flash-Lite: 31.2 (#109)

| Benchmark | Claude Sonnet 5.5 | Gemini 2.0 Flash-Lite |
|---|---|---|
| LMArena Vision | 1289 | 1100 |
| Furniture Assembly | 75% | — |

## Multilingual

- Claude Sonnet 5.5: 55.3 (#30)
- Gemini 2.0 Flash-Lite: 46.0 (#161)

| Benchmark | Claude Sonnet 5.5 | Gemini 2.0 Flash-Lite |
|---|---|---|
| LMArena Non-English | 1452 | 1323 |
| LMArena Chinese | 1522 | 1339 |
| LMArena Russian | 1451 | 1328 |
| LMArena French | — | 1347 |
| LMArena German | — | 1306 |
| LMArena Japanese | — | 1301 |
| LMArena Korean | — | 1325 |
| LMArena Spanish | — | 1313 |

## Instruction Following

- Claude Sonnet 5.5: 78.3 (#11)
- Gemini 2.0 Flash-Lite: 70.4 (#163)

| Benchmark | Claude Sonnet 5.5 | Gemini 2.0 Flash-Lite |
|---|---|---|
| LMArena Instruction Following | 1495 | 1305 |
| LiveBench Instruction Following | — | 78.3% |
| IFEval | — | 82.4% |

## Long Context

- Claude Sonnet 5.5: 45.9 (#28)
- Gemini 2.0 Flash-Lite: 40.1 (#160)

| Benchmark | Claude Sonnet 5.5 | Gemini 2.0 Flash-Lite |
|---|---|---|
| LMArena Longer Query | 1498 | 1320 |

## Writing & Preference

- Claude Sonnet 5.5: 66.0 (#40)
- Gemini 2.0 Flash-Lite: 51.7 (#177)

| Benchmark | Claude Sonnet 5.5 | Gemini 2.0 Flash-Lite |
|---|---|---|
| LMArena Text | 1471 | 1330 |
| LMArena Creative Writing | 1465 | 1319 |
| LMArena Multi-Turn | 1474 | 1307 |
| WildBench | — | 79% |
| LiveBench Language | — | 34.3% |

## FAQ

### Is Claude Sonnet 5.5 better than Gemini 2.0 Flash-Lite?

Claude Sonnet 5.5 is the stronger model overall, scoring 61.9 to 37.8 on the Noometry Index.

### Is Claude Sonnet 5.5 or Gemini 2.0 Flash-Lite better for coding?

Claude Sonnet 5.5 scores higher on coding benchmarks: 67.3 versus 37.9 in the Noometry coding category.

### How many benchmarks do Claude Sonnet 5.5 and Gemini 2.0 Flash-Lite share?

13 benchmarks have published results for both models. Claude Sonnet 5.5 has 32 scored results on Noometry and Gemini 2.0 Flash-Lite has 32.