Model comparison
Claude 3 Opus vs Gemini 3.5 Flash
Gemini 3.5 Flash is the stronger model overall, scoring 54.2 to 29.5 on the Noometry Index.
Last verified . 29 shared benchmarks.
GoogleSummary
- They share 29 benchmarks with published results for both. Claude 3 Opus scores higher in 0 categories and Gemini 3.5 Flash in 10 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Gemini 3.5 Flash leads 62.8 to 14.6.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 4.7% for Claude 3 Opus and 95.6% for Gemini 3.5 Flash.
Side by side
| Claude 3 Opus | Gemini 3.5 Flash | |
|---|---|---|
| Provider | Anthropic | |
| Noometry Index | 29.5 | 54.2 |
| Released | 2024-02-29 | 2026-05-19 |
| Weights | Proprietary | Proprietary |
| Context window | — | 1.05M |
| Max output | — | 66K |
| Input $ / M tokens | — | $1.50 |
| Output $ / M tokens | — | $9 |
| Results tracked | 46 | 54 |
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Category by category
Coding Gemini 3.5 Flash leads
Claude 3 Opus: 32.9 (#267), Gemini 3.5 Flash: 49.4 (#49)
| Benchmark | Claude 3 Opus | Gemini 3.5 Flash |
|---|---|---|
| WeirdML | 19.2% | 62.6% |
| LMArena Coding | 1264 | 1492 |
| SWE-bench Verified | — | 79.3% |
| DeepSWE | — | 37.4% |
| LMArena WebDev | — | 1499 |
| SciCode | — | 53.1% |
| BigCodeBench Instruct | 45.5% | — |
| LiveBench Coding | 38.6% | — |
| BigCodeBench Complete | 57.4% | — |
| ALE-Bench | — | 911.02 |
| HumanEval+ | 77.4% | — |
| MBPP+ | 73.3% | — |
Agentic & Tool Use Too close to call
Claude 3 Opus: 24.6 (#116), Gemini 3.5 Flash: 24.7 (#114)
| Benchmark | Claude 3 Opus | Gemini 3.5 Flash |
|---|---|---|
| APEX-Agents | — | 27.5% |
| Cybench | 10% | — |
| GBAEval | — | 6.7% |
| GDP.pdf | — | 14% |
| METR Time Horizons | 29.5% | — |
| Vending-Bench 2 | — | 5,396 |
Reasoning Gemini 3.5 Flash leads
Claude 3 Opus: 14.6 (#324), Gemini 3.5 Flash: 62.8 (#18)
| Benchmark | Claude 3 Opus | Gemini 3.5 Flash |
|---|---|---|
| SimpleBench | 23.5% | 76.7% |
| Chess Puzzles | 5% | 50% |
| EnigmaEval | 0.8% | 25.4% |
| LMArena Hard Prompts | 1245 | 1488 |
| DTBench | 61.6% | 94.7% |
| LMCA | 17% | 47.1% |
| Epoch Capabilities Index | 126.91 | 154.46 |
| ForecastBench | 58.4 | 59 |
| ARC-AGI-2 | — | 72.1% |
| NYT Connections (extended) | — | 92.6% |
| ARC-AGI-1 | — | 92.5% |
| CritPt | — | 13.1% |
| EBR-Bench | — | 4.8% |
| LiveBench Reasoning | 40.6% | — |
| Mystery Game Puzzles | — | 32% |
| LiveBench Data Analysis | 57.9% | — |
| Surface Evolver Bench | — | 58.1% |
| LiveBench | 49.2% | — |
| WinoGrande | 88.5% | — |
Math Gemini 3.5 Flash leads
Claude 3 Opus: 14.8 (#299), Gemini 3.5 Flash: 60.7 (#36)
| Benchmark | Claude 3 Opus | Gemini 3.5 Flash |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 4.7% | 95.6% |
| LMArena Math | 1273 | 1504 |
| FrontierMath (Tiers 1-3) | — | 62.8% |
| FrontierMath Tier 4 | — | 26.8% |
| MathArena Final-Answer Competitions | — | 76.3% |
| ProofBench | — | 31% |
| LiveBench Math | 43.6% | — |
| MATH Level 5 | 37.5% | — |
| FrontierMath (Feb 2025 set) | — | 39% |
| FrontierMath Tier 4 (v1) | — | 14.6% |
Knowledge Gemini 3.5 Flash leads
Claude 3 Opus: 24.5 (#267), Gemini 3.5 Flash: 66.3 (#11)
| Benchmark | Claude 3 Opus | Gemini 3.5 Flash |
|---|---|---|
| GPQA Diamond | 47.2% | 92.8% |
| SimpleQA Verified | 12.6% | 66.2% |
| LMArena Expert | 1223 | 1495 |
| Confabulations | 22.7% | — |
| MMLU | 84.6% | — |
Multimodal Gemini 3.5 Flash leads
Claude 3 Opus: 27.1 (#116), Gemini 3.5 Flash: 45.7 (#15)
| Benchmark | Claude 3 Opus | Gemini 3.5 Flash |
|---|---|---|
| LMArena Vision | 1023 | 1310 |
| Blueprint-Bench 2 | — | 33.6% |
| LMArena Document | — | 1463 |
Multilingual Gemini 3.5 Flash leads
Claude 3 Opus: 41.4 (#207), Gemini 3.5 Flash: 57.0 (#13)
| Benchmark | Claude 3 Opus | Gemini 3.5 Flash |
|---|---|---|
| LMArena Non-English | 1258 | 1476 |
| LMArena Chinese | 1248 | 1526 |
| LMArena French | 1275 | 1490 |
| LMArena German | 1258 | 1492 |
| LMArena Japanese | 1204 | 1486 |
| LMArena Korean | 1187 | 1451 |
| LMArena Russian | 1280 | 1493 |
| LMArena Spanish | 1246 | 1480 |
Instruction Following Gemini 3.5 Flash leads
Claude 3 Opus: 64.1 (#228), Gemini 3.5 Flash: 77.0 (#30)
| Benchmark | Claude 3 Opus | Gemini 3.5 Flash |
|---|---|---|
| LMArena Instruction Following | 1248 | 1467 |
| LiveBench Instruction Following | 63.9% | — |
Long Context Gemini 3.5 Flash leads
Claude 3 Opus: 38.2 (#202), Gemini 3.5 Flash: 45.4 (#38)
| Benchmark | Claude 3 Opus | Gemini 3.5 Flash |
|---|---|---|
| LMArena Longer Query | 1259 | 1482 |
Writing & Preference Gemini 3.5 Flash leads
Claude 3 Opus: 47.2 (#213), Gemini 3.5 Flash: 65.5 (#47)
| Benchmark | Claude 3 Opus | Gemini 3.5 Flash |
|---|---|---|
| LMArena Text | 1262 | 1482 |
| LMArena Creative Writing | 1235 | 1470 |
| LMArena Multi-Turn | 1275 | 1481 |
| EQ-Bench 4 | — | 1087 |
| LiveBench Language | 50.4% | — |
Frequently asked questions
Is Claude 3 Opus better than Gemini 3.5 Flash?
Gemini 3.5 Flash is the stronger model overall, scoring 54.2 to 29.5 on the Noometry Index.
Is Claude 3 Opus or Gemini 3.5 Flash better for coding?
Gemini 3.5 Flash scores higher on coding benchmarks: 49.4 versus 32.9 in the Noometry coding category.
How many benchmarks do Claude 3 Opus and Gemini 3.5 Flash share?
29 benchmarks have published results for both models. Claude 3 Opus has 46 scored results on Noometry and Gemini 3.5 Flash has 54.