Model comparison
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.
Last verified . 13 shared benchmarks.
GoogleSummary
- 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.
Side by side
| Claude Sonnet 5.5 | Gemini 2.0 Flash-Lite | |
|---|---|---|
| Provider | Anthropic | |
| Noometry Index | 61.9 | 37.8 |
| Released | 2026-09-28 | 2025-02-05 |
| Weights | Proprietary | Proprietary |
| Context window | 1M | — |
| Max output | 128K | — |
| Input $ / M tokens | $2 | — |
| Output $ / M tokens | $10 | — |
| Results tracked | 32 | 32 |
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Category by category
Coding Claude Sonnet 5.5 leads
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 Not comparable
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 leads
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 leads
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 leads
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 leads
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 leads
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 leads
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 leads
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 leads
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% |
Frequently asked questions
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.