Model comparison
Claude Sonnet 5.5 vs Gemma 2 9B
Claude Sonnet 5.5 is the stronger model overall, scoring 60.5 to 25.7 on the Noometry Index.
Last verified . 2 shared benchmarks.
GoogleSummary
- They share 2 benchmarks with published results for both. Claude Sonnet 5.5 scores higher in 4 categories and Gemma 2 9B in 0 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in math, where Claude Sonnet 5.5 leads 88.7 to 9.3.
- 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 | 60.5 | 25.7 |
| 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 | 16 | 35 |
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Category by category
Coding Claude Sonnet 5.5 leads
Claude Sonnet 5.5: 65.5 (#6), Gemma 2 9B: 29.0 (#299)
| Benchmark | Claude Sonnet 5.5 | Gemma 2 9B |
|---|---|---|
| FrontierCode | 52.1% | — |
| CursorBench | 55.5% | — |
| LMArena WebDev | 1699 | — |
| FrontierSWE | 61.9% | — |
| SciCode | 61% | — |
| BigCodeBench Instruct | — | 34.7% |
| LiveBench Coding | — | 22.5% |
| LMArena Coding | — | 1174 |
| BigCodeBench Complete | — | 40.6% |
| ALE-Bench | 1,819 | — |
Agentic & Tool Use Not comparable
Claude Sonnet 5.5: 44.9 (#14), 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: 52.4 (#29), Gemma 2 9B: 15.3 (#306)
| Benchmark | Claude Sonnet 5.5 | Gemma 2 9B |
|---|---|---|
| CritPt | 31.4% | — |
| LiveBench Reasoning | — | 15.2% |
| LMArena Hard Prompts | — | 1172 |
| Mystery Game Puzzles | 65% | — |
| LiveBench Data Analysis | — | 36.4% |
| Epoch Capabilities Index | — | 119.78 |
| LiveBench | — | 28.7% |
| PIQA | — | 83.7% |
Math Claude Sonnet 5.5 leads
Claude Sonnet 5.5: 88.7 (#4), Gemma 2 9B: 9.3 (#312)
| Benchmark | Claude Sonnet 5.5 | Gemma 2 9B |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 100% | 0.6% |
| FrontierMath (Tiers 1-3) | 88.8% | — |
| FrontierMath Tier 4 | 80.5% | — |
| ProofBench | 100% | — |
| LiveBench Math | — | 19.8% |
| LMArena Math | — | 1183 |
| MATH Level 5 | — | 21% |
| GSM8K | — | 84.9% |
Knowledge Claude Sonnet 5.5 leads
Claude Sonnet 5.5: 66.0 (#11), Gemma 2 9B: 9.7 (#300)
| Benchmark | Claude Sonnet 5.5 | Gemma 2 9B |
|---|---|---|
| GPQA Diamond | 95.6% | 27.5% |
| SimpleQA Verified | 46.5% | — |
| LMArena Expert | — | 1147 |
| BoolQ | — | 85.7% |
| MMLU | — | 72.1% |
Multimodal Not comparable
Claude Sonnet 5.5: 53.2 (#5), Gemma 2 9B: —
| Benchmark | Claude Sonnet 5.5 | Gemma 2 9B |
|---|---|---|
| Furniture Assembly | 75% | — |
Multilingual Not comparable
Claude Sonnet 5.5: —, Gemma 2 9B: 36.8 (#233)
| Benchmark | Claude Sonnet 5.5 | Gemma 2 9B |
|---|---|---|
| LMArena Non-English | — | 1188 |
| LMArena Chinese | — | 1185 |
| LMArena French | — | 1189 |
| LMArena German | — | 1186 |
| LMArena Japanese | — | 1144 |
| LMArena Korean | — | 1137 |
| LMArena Russian | — | 1200 |
| LMArena Spanish | — | 1200 |
Instruction Following Not comparable
Claude Sonnet 5.5: —, Gemma 2 9B: 57.8 (#264)
| Benchmark | Claude Sonnet 5.5 | Gemma 2 9B |
|---|---|---|
| LiveBench Instruction Following | — | 52.6% |
| LMArena Instruction Following | — | 1178 |
Long Context Not comparable
Claude Sonnet 5.5: —, Gemma 2 9B: 36.3 (#228)
| Benchmark | Claude Sonnet 5.5 | Gemma 2 9B |
|---|---|---|
| LMArena Longer Query | — | 1197 |
Writing & Preference Not comparable
Claude Sonnet 5.5: —, Gemma 2 9B: 32.3 (#276)
| Benchmark | Claude Sonnet 5.5 | Gemma 2 9B |
|---|---|---|
| LMArena Text | — | 1207 |
| LMArena Creative Writing | — | 1206 |
| EQ-Bench Creative Writing | — | 841 |
| LMArena Multi-Turn | — | 1193 |
| 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 60.5 to 25.7 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: 65.5 versus 29.0 in the Noometry coding category.
How many benchmarks do Claude Sonnet 5.5 and Gemma 2 9B share?
2 benchmarks have published results for both models. Claude Sonnet 5.5 has 16 scored results on Noometry and Gemma 2 9B has 35.