Model comparison
Claude 3 Opus vs Gemini 2.5 Flash
Gemini 2.5 Flash is the stronger model overall, scoring 39.3 to 29.5 on the Noometry Index.
Last verified . 27 shared benchmarks.
GoogleSummary
- They share 27 benchmarks with published results for both. Claude 3 Opus scores higher in 0 categories and Gemini 2.5 Flash in 10 categories; 10 gaps are clear of the uncertainty.
- The widest gap is in math, where Gemini 2.5 Flash leads 39.9 to 14.8.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 4.7% for Claude 3 Opus and 73.1% for Gemini 2.5 Flash.
Side by side
| Claude 3 Opus | Gemini 2.5 Flash | |
|---|---|---|
| Provider | Anthropic | |
| Noometry Index | 29.5 | 39.3 |
| Released | 2024-02-29 | 2025-04-17 |
| Weights | Proprietary | Proprietary |
| Context window | — | 1.05M |
| Max output | — | 66K |
| Input $ / M tokens | — | $0.30 |
| Output $ / M tokens | — | $2.50 |
| Results tracked | 46 | 54 |
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Category by category
Coding Gemini 2.5 Flash leads
Claude 3 Opus: 32.9 (#267), Gemini 2.5 Flash: 35.8 (#220)
| Benchmark | Claude 3 Opus | Gemini 2.5 Flash |
|---|---|---|
| WeirdML | 19.2% | 41.9% |
| LMArena Coding | 1264 | 1424 |
| SWE-bench Verified (bash only) | — | 28.7% |
| Aider Polyglot | — | 55.1% |
| BigCodeBench Instruct | 45.5% | — |
| LiveBench Coding | 38.6% | — |
| BigCodeBench Complete | 57.4% | — |
| ALE-Bench | — | 661.88 |
| HumanEval+ | 77.4% | — |
| MBPP+ | 73.3% | — |
Agentic & Tool Use Gemini 2.5 Flash leads
Claude 3 Opus: 24.6 (#116), Gemini 2.5 Flash: 30.8 (#74)
| Benchmark | Claude 3 Opus | Gemini 2.5 Flash |
|---|---|---|
| Terminal-Bench | — | 17.1% |
| Berkeley Function Calling Leaderboard | — | 56.2% |
| TheAgentCompany | — | 41.1% |
| Cybench | 10% | — |
| BALROG | — | 33.5% |
| METR Time Horizons | 29.5% | — |
| Vending-Bench 2 | — | 548.84 |
Reasoning Gemini 2.5 Flash leads
Claude 3 Opus: 14.6 (#324), Gemini 2.5 Flash: 18.1 (#286)
| Benchmark | Claude 3 Opus | Gemini 2.5 Flash |
|---|---|---|
| SimpleBench | 23.5% | 41.2% |
| EnigmaEval | 0.8% | 2.7% |
| LMArena Hard Prompts | 1245 | 1422 |
| DTBench | 61.6% | 76.5% |
| LMCA | 17% | 27.5% |
| Epoch Capabilities Index | 126.91 | 143.03 |
| ForecastBench | 58.4 | 60.6 |
| ARC-AGI-2 | — | 2.5% |
| Kagi LLM Benchmark | — | 56.8% |
| ARC-AGI-1 | — | 33.3% |
| CritPt | — | 1.1% |
| Chess Puzzles | 5% | — |
| LiveBench Reasoning | 40.6% | — |
| LiveBench Data Analysis | 57.9% | — |
| LiveBench | 49.2% | — |
| WinoGrande | 88.5% | — |
Math Gemini 2.5 Flash leads
Claude 3 Opus: 14.8 (#299), Gemini 2.5 Flash: 39.9 (#98)
| Benchmark | Claude 3 Opus | Gemini 2.5 Flash |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 4.7% | 73.1% |
| LMArena Math | 1273 | 1415 |
| Omni-MATH | — | 38.5% |
| LiveBench Math | 43.6% | — |
| MATH Level 5 | 37.5% | — |
| FrontierMath (Feb 2025 set) | — | 4.8% |
| FrontierMath Tier 4 (v1) | — | 4.2% |
Knowledge Gemini 2.5 Flash leads
Claude 3 Opus: 24.5 (#267), Gemini 2.5 Flash: 36.4 (#168)
| Benchmark | Claude 3 Opus | Gemini 2.5 Flash |
|---|---|---|
| Confabulations | 22.7% | 16.8% |
| LMArena Expert | 1223 | 1426 |
| GPQA Diamond | 47.2% | — |
| Humanity's Last Exam | — | 12.1% |
| SimpleQA Verified | 12.6% | — |
| MMLU-Pro | — | 63.9% |
| Vectara Hallucination Rate | — | 7.8% |
| GPQA (HELM) | — | 39% |
| MMLU | 84.6% | — |
Multimodal Gemini 2.5 Flash leads
Claude 3 Opus: 27.1 (#116), Gemini 2.5 Flash: 41.8 (#32)
| Benchmark | Claude 3 Opus | Gemini 2.5 Flash |
|---|---|---|
| LMArena Vision | 1023 | 1253 |
| GeoBench | — | 76% |
| VPCT | — | 46.2% |
| SpatialViz-Bench | — | 36.9% |
Multilingual Gemini 2.5 Flash leads
Claude 3 Opus: 41.4 (#207), Gemini 2.5 Flash: 52.3 (#88)
| Benchmark | Claude 3 Opus | Gemini 2.5 Flash |
|---|---|---|
| LMArena Non-English | 1258 | 1409 |
| LMArena Chinese | 1248 | 1450 |
| LMArena French | 1275 | 1433 |
| LMArena German | 1258 | 1418 |
| LMArena Japanese | 1204 | 1405 |
| LMArena Korean | 1187 | 1385 |
| LMArena Russian | 1280 | 1415 |
| LMArena Spanish | 1246 | 1421 |
Instruction Following Gemini 2.5 Flash leads
Claude 3 Opus: 64.1 (#228), Gemini 2.5 Flash: 75.7 (#54)
| Benchmark | Claude 3 Opus | Gemini 2.5 Flash |
|---|---|---|
| LMArena Instruction Following | 1248 | 1405 |
| LiveBench Instruction Following | 63.9% | — |
| IFEval | — | 89.8% |
Long Context Gemini 2.5 Flash leads
Claude 3 Opus: 38.2 (#202), Gemini 2.5 Flash: 47.5 (#17)
| Benchmark | Claude 3 Opus | Gemini 2.5 Flash |
|---|---|---|
| LMArena Longer Query | 1259 | 1419 |
| Fiction.LiveBench | — | 77.8% |
Writing & Preference Gemini 2.5 Flash leads
Claude 3 Opus: 47.2 (#213), Gemini 2.5 Flash: 53.8 (#157)
| Benchmark | Claude 3 Opus | Gemini 2.5 Flash |
|---|---|---|
| LMArena Text | 1262 | 1417 |
| LMArena Creative Writing | 1235 | 1400 |
| LMArena Multi-Turn | 1275 | 1408 |
| Short-Story Creative Writing | — | 76.5% |
| EQ-Bench Creative Writing | — | 1137 |
| WildBench | — | 81.7% |
| LiveBench Language | 50.4% | — |
Frequently asked questions
Is Claude 3 Opus better than Gemini 2.5 Flash?
Gemini 2.5 Flash is the stronger model overall, scoring 39.3 to 29.5 on the Noometry Index.
Is Claude 3 Opus or Gemini 2.5 Flash better for coding?
Gemini 2.5 Flash scores higher on coding benchmarks: 35.8 versus 32.9 in the Noometry coding category.
How many benchmarks do Claude 3 Opus and Gemini 2.5 Flash share?
27 benchmarks have published results for both models. Claude 3 Opus has 46 scored results on Noometry and Gemini 2.5 Flash has 54.