Model comparison
Claude Opus 5.5 vs Gemini 2.0 Pro
Claude Opus 5.5 is the stronger model overall, scoring 68.6 to 39.1 on the Noometry Index.
Last verified . 2 shared benchmarks.
GoogleSummary
- They share 2 benchmarks with published results for both. Claude Opus 5.5 scores higher in 7 categories and Gemini 2.0 Pro in 0 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Claude Opus 5.5 leads 80.2 to 22.3.
- The biggest single-benchmark swing is GPQA Diamond: 90.6% for Claude Opus 5.5 and 65.7% for Gemini 2.0 Pro.
Side by side
| Claude Opus 5.5 | Gemini 2.0 Pro | |
|---|---|---|
| Provider | Anthropic | |
| Noometry Index | 68.6 | 39.1 |
| Released | 2026-09-22 | 2025-02-05 |
| Weights | Proprietary | Proprietary |
| Context window | 1M | — |
| Max output | 128K | — |
| Input $ / M tokens | $4 | — |
| Output $ / M tokens | $20 | — |
| Results tracked | 44 | 14 |
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Category by category
Coding Claude Opus 5.5 leads
Claude Opus 5.5: 71.9 (#3), Gemini 2.0 Pro: 37.8 (#187)
| Benchmark | Claude Opus 5.5 | Gemini 2.0 Pro |
|---|---|---|
| FrontierCode | 54.6% | — |
| Aider Polyglot | — | 35.6% |
| CursorBench | 57.8% | — |
| LMArena WebDev | 1813 | — |
| FrontierSWE | 62.3% | — |
| SciCode | 66.9% | — |
| LiveBench Coding | — | 63.5% |
| LMArena Coding | 1547 | — |
| MirrorCode | 77.4% | — |
| ALE-Bench | 2,147 | — |
Agentic & Tool Use Not comparable
Claude Opus 5.5: 45.3 (#15), Gemini 2.0 Pro: —
| Benchmark | Claude Opus 5.5 | Gemini 2.0 Pro |
|---|---|---|
| APEX-Agents | 73.5% | — |
| GDP.pdf | 30.6% | — |
| Vending-Bench 2 | 9,235 | — |
Reasoning Claude Opus 5.5 leads
Claude Opus 5.5: 80.2 (#3), Gemini 2.0 Pro: 22.3 (#198)
| Benchmark | Claude Opus 5.5 | Gemini 2.0 Pro |
|---|---|---|
| Epoch Capabilities Index | 167.33 | 135.06 |
| ARC-AGI-2 | 93.3% | — |
| NYT Connections (extended) | 88.5% | — |
| ARC-AGI-1 | 98.5% | — |
| CritPt | 31.7% | — |
| EnigmaEval | — | 0.7% |
| EBR-Bench | 71.4% | — |
| LiveBench Reasoning | — | 60.1% |
| LMArena Hard Prompts | 1535 | — |
| Mystery Game Puzzles | 71% | — |
| DTBench | 98.9% | — |
| LiveBench Data Analysis | — | 68% |
| LMCA | 68.2% | — |
| LiveBench | — | 65.1% |
Math Claude Opus 5.5 leads
Claude Opus 5.5: 91.8 (#3), Gemini 2.0 Pro: 39.7 (#100)
| Benchmark | Claude Opus 5.5 | Gemini 2.0 Pro |
|---|---|---|
| FrontierMath (Tiers 1-3) | 91.2% | — |
| FrontierMath Tier 4 | 95% | — |
| OTIS Mock AIME 2024-2025 | 100% | — |
| ProofBench | 100% | — |
| LiveBench Math | — | 71% |
| LMArena Math | 1506 | — |
| MATH Level 5 | — | 83.5% |
| FrontierMath Erdős | 2.9% | — |
Knowledge Claude Opus 5.5 leads
Claude Opus 5.5: 66.4 (#10), Gemini 2.0 Pro: 36.5 (#167)
| Benchmark | Claude Opus 5.5 | Gemini 2.0 Pro |
|---|---|---|
| GPQA Diamond | 90.6% | 65.7% |
| SimpleQA Verified | 72.2% | — |
| Confabulations | — | 18.4% |
| LMArena Expert | 1547 | — |
Multimodal Not comparable
Claude Opus 5.5: 57.8 (#1), Gemini 2.0 Pro: —
| Benchmark | Claude Opus 5.5 | Gemini 2.0 Pro |
|---|---|---|
| LMArena Vision | 1321 | — |
| Blueprint-Bench 2 | 51.2% | — |
| Furniture Assembly | 83.3% | — |
Multilingual Not comparable
Claude Opus 5.5: 59.1 (#2), Gemini 2.0 Pro: —
| Benchmark | Claude Opus 5.5 | Gemini 2.0 Pro |
|---|---|---|
| LMArena Non-English | 1507 | — |
| LMArena Chinese | 1588 | — |
| LMArena French | 1514 | — |
| LMArena Russian | 1520 | — |
| LMArena Spanish | 1507 | — |
Instruction Following Claude Opus 5.5 leads
Claude Opus 5.5: 80.0 (#3), Gemini 2.0 Pro: 75.5 (#59)
| Benchmark | Claude Opus 5.5 | Gemini 2.0 Pro |
|---|---|---|
| LiveBench Instruction Following | — | 83.4% |
| LMArena Instruction Following | 1537 | — |
Long Context Claude Opus 5.5 leads
Claude Opus 5.5: 47.1 (#19), Gemini 2.0 Pro: 29.2 (#292)
| Benchmark | Claude Opus 5.5 | Gemini 2.0 Pro |
|---|---|---|
| Fiction.LiveBench | — | 41.7% |
| LMArena Longer Query | 1532 | — |
Writing & Preference Claude Opus 5.5 leads
Claude Opus 5.5: 78.2 (#3), Gemini 2.0 Pro: 52.7 (#165)
| Benchmark | Claude Opus 5.5 | Gemini 2.0 Pro |
|---|---|---|
| LMArena Text | 1515 | — |
| LMArena Creative Writing | 1533 | — |
| EQ-Bench Creative Writing | 2050 | — |
| LMArena Multi-Turn | 1499 | — |
| LiveBench Language | — | 44.9% |
Frequently asked questions
Is Claude Opus 5.5 better than Gemini 2.0 Pro?
Claude Opus 5.5 is the stronger model overall, scoring 68.6 to 39.1 on the Noometry Index.
Is Claude Opus 5.5 or Gemini 2.0 Pro better for coding?
Claude Opus 5.5 scores higher on coding benchmarks: 71.9 versus 37.8 in the Noometry coding category.
How many benchmarks do Claude Opus 5.5 and Gemini 2.0 Pro share?
2 benchmarks have published results for both models. Claude Opus 5.5 has 44 scored results on Noometry and Gemini 2.0 Pro has 14.