Model comparison
Claude Sonnet 5.5 vs Gemma 2 9B
Claude Sonnet 5.5 is the stronger model overall, scoring 61.9 to 25.9 on the Noometry Index.
Last verified . 15 shared benchmarks.
GoogleSummary
- They share 15 benchmarks with published results for both. Claude Sonnet 5.5 scores higher in 8 categories and Gemma 2 9B in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where Claude Sonnet 5.5 leads 87.9 to 9.9.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 100% for Claude Sonnet 5.5 and 0.6% for Gemma 2 9B.
- Gemma 2 9B has downloadable open weights; the other is API-only.
Side by side
| Claude Sonnet 5.5 | Gemma 2 9B | |
|---|---|---|
| Provider | Anthropic | |
| Noometry Index | 61.9 | 25.9 |
| Released | 2026-09-28 | 2024-06-24 |
| Weights | Proprietary | Open |
| Context window | 1M | — |
| Max output | 128K | — |
| Input $ / M tokens | $2 | — |
| Output $ / M tokens | $10 | — |
| Results tracked | 32 | 35 |
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Category by category
Coding Claude Sonnet 5.5 leads
Claude Sonnet 5.5: 67.3 (#6), Gemma 2 9B: 29.4 (#304)
| Benchmark | Claude Sonnet 5.5 | Gemma 2 9B |
|---|---|---|
| LMArena Coding | 1513 | 1173 |
| FrontierCode | 52.1% | — |
| CursorBench | 55.5% | — |
| LMArena WebDev | 1774 | — |
| FrontierSWE | 61.9% | — |
| SciCode | 61% | — |
| BigCodeBench Instruct | — | 34.7% |
| LiveBench Coding | — | 22.5% |
| BigCodeBench Complete | — | 40.6% |
| ALE-Bench | 1,819 | — |
Agentic & Tool Use Not comparable
Claude Sonnet 5.5: 45.0 (#16), Gemma 2 9B: —
| Benchmark | Claude Sonnet 5.5 | Gemma 2 9B |
|---|---|---|
| APEX-Agents | 75.5% | — |
Reasoning Claude Sonnet 5.5 leads
Claude Sonnet 5.5: 54.0 (#28), Gemma 2 9B: 15.9 (#309)
| Benchmark | Claude Sonnet 5.5 | Gemma 2 9B |
|---|---|---|
| LMArena Hard Prompts | 1495 | 1171 |
| Epoch Capabilities Index | 165.03 | 119.83 |
| NYT Connections (extended) | 80.5% | — |
| CritPt | 31.4% | — |
| LiveBench Reasoning | — | 15.2% |
| Mystery Game Puzzles | 65% | — |
| LiveBench Data Analysis | — | 36.4% |
| LiveBench | — | 28.7% |
| PIQA | — | 83.7% |
Math Claude Sonnet 5.5 leads
Claude Sonnet 5.5: 87.9 (#6), Gemma 2 9B: 9.9 (#318)
| Benchmark | Claude Sonnet 5.5 | Gemma 2 9B |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 100% | 0.6% |
| LMArena Math | 1510 | 1183 |
| FrontierMath (Tiers 1-3) | 88.8% | — |
| FrontierMath Tier 4 | 80.5% | — |
| ProofBench | 100% | — |
| LiveBench Math | — | 19.8% |
| MATH Level 5 | — | 21% |
| FrontierMath Erdős | 2.9% | — |
| GSM8K | — | 84.9% |
Knowledge Claude Sonnet 5.5 leads
Claude Sonnet 5.5: 66.0 (#12), Gemma 2 9B: 9.7 (#305)
| Benchmark | Claude Sonnet 5.5 | Gemma 2 9B |
|---|---|---|
| GPQA Diamond | 95.6% | 27.5% |
| LMArena Expert | 1540 | 1147 |
| SimpleQA Verified | 46.5% | — |
| BoolQ | — | 85.7% |
| MMLU | — | 72.1% |
Multimodal Not comparable
Claude Sonnet 5.5: 51.5 (#6), Gemma 2 9B: —
| Benchmark | Claude Sonnet 5.5 | Gemma 2 9B |
|---|---|---|
| LMArena Vision | 1289 | — |
| Furniture Assembly | 75% | — |
Multilingual Claude Sonnet 5.5 leads
Claude Sonnet 5.5: 55.3 (#30), Gemma 2 9B: 36.6 (#238)
| Benchmark | Claude Sonnet 5.5 | Gemma 2 9B |
|---|---|---|
| LMArena Non-English | 1452 | 1188 |
| LMArena Chinese | 1522 | 1185 |
| LMArena Russian | 1451 | 1200 |
| LMArena French | — | 1190 |
| LMArena German | — | 1186 |
| LMArena Japanese | — | 1144 |
| LMArena Korean | — | 1137 |
| LMArena Spanish | — | 1200 |
Instruction Following Claude Sonnet 5.5 leads
Claude Sonnet 5.5: 78.3 (#11), Gemma 2 9B: 57.6 (#269)
| Benchmark | Claude Sonnet 5.5 | Gemma 2 9B |
|---|---|---|
| LMArena Instruction Following | 1495 | 1178 |
| LiveBench Instruction Following | — | 52.6% |
Long Context Claude Sonnet 5.5 leads
Claude Sonnet 5.5: 45.9 (#28), Gemma 2 9B: 36.3 (#233)
| Benchmark | Claude Sonnet 5.5 | Gemma 2 9B |
|---|---|---|
| LMArena Longer Query | 1498 | 1197 |
Writing & Preference Claude Sonnet 5.5 leads
Claude Sonnet 5.5: 66.0 (#40), Gemma 2 9B: 32.1 (#281)
| Benchmark | Claude Sonnet 5.5 | Gemma 2 9B |
|---|---|---|
| LMArena Text | 1471 | 1207 |
| LMArena Creative Writing | 1465 | 1206 |
| LMArena Multi-Turn | 1474 | 1193 |
| EQ-Bench Creative Writing | — | 841 |
| LiveBench Language | — | 25.5% |
Frequently asked questions
Is Claude Sonnet 5.5 better than Gemma 2 9B?
Claude Sonnet 5.5 is the stronger model overall, scoring 61.9 to 25.9 on the Noometry Index.
Is Claude Sonnet 5.5 or Gemma 2 9B better for coding?
Claude Sonnet 5.5 scores higher on coding benchmarks: 67.3 versus 29.4 in the Noometry coding category.
How many benchmarks do Claude Sonnet 5.5 and Gemma 2 9B share?
15 benchmarks have published results for both models. Claude Sonnet 5.5 has 32 scored results on Noometry and Gemma 2 9B has 35.