# Claude Opus 4.5 vs Gemini 2.0 Flash (Feb 2025)

> Claude Opus 4.5 is the stronger model overall, scoring 50.5 to 34.8 on the Noometry Index.

- Canonical page: https://noometry.com/compare/claude-opus-4-5-vs-gemini-2-0-flash
- Last updated: 2026-10-10
- Shared benchmarks: 31

## Summary

- They share 31 benchmarks with published results for both. Claude Opus 4.5 scores higher in 9 categories and Gemini 2.0 Flash (Feb 2025) in 1 category; 10 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Claude Opus 4.5 leads 42.5 to 15.2.
- The biggest single-benchmark swing is SWE-bench Verified (bash only): 76.8% for Claude Opus 4.5 and 13.5% for Gemini 2.0 Flash (Feb 2025).

## Snapshot

| | Claude Opus 4.5 | Gemini 2.0 Flash (Feb 2025) |
|---|---|---|
| Provider | Anthropic | Google |
| Noometry Index | 50.5 | 34.8 |
| Rank | 39 | 223 |
| Context | 200K | — |
| Input $/M | $5 | — |
| Output $/M | $25 | — |
| Weights | Proprietary | Proprietary |

## Coding

- Claude Opus 4.5: 55.4 (#21)
- Gemini 2.0 Flash (Feb 2025): 28.2 (#308)

| Benchmark | Claude Opus 4.5 | Gemini 2.0 Flash (Feb 2025) |
|---|---|---|
| SWE-bench Verified (bash only) | 76.8% | 13.5% |
| WeirdML | 63.7% | 25.8% |
| LMArena Coding | 1504 | 1351 |
| SWE-bench Verified | 76.7% | — |
| Aider Polyglot | — | 38.2% |
| LMArena WebDev | 1493 | — |
| SWE-bench Multilingual | 70.7% | — |
| GSO | 26.5% | — |
| BigCodeBench Instruct | — | 45.9% |
| LiveBench Coding | — | 63.4% |
| BigCodeBench Complete | — | 59.9% |
| CadEval | — | 30% |
| ALE-Bench | 1,025 | — |
| AlgoTune | 1.77 | — |

## Agentic & Tool Use

- Claude Opus 4.5: 47.2 (#11)
- Gemini 2.0 Flash (Feb 2025): 28.0 (#85)

| Benchmark | Claude Opus 4.5 | Gemini 2.0 Flash (Feb 2025) |
|---|---|---|
| Terminal-Bench | 63.1% | — |
| Berkeley Function Calling Leaderboard | 77.5% | — |
| GDPval | 45.5% | — |
| Remote Labor Index | 3.8% | — |
| TheAgentCompany | — | 11.4% |
| τ²-bench Airline | 84% | — |
| τ²-bench Banking | 24.7% | — |
| τ²-bench Retail | 79.6% | — |
| τ²-bench Telecom | 92.3% | — |
| Cybench | 82% | — |
| DeepResearch Bench | 54.8% | — |
| OSWorld | 66.3% | — |
| BALROG | 43.5% | — |
| LMArena Search | 1180 | — |
| METR Time Horizons | 75% | — |
| Vending-Bench 2 | 4,967 | — |

## Reasoning

- Claude Opus 4.5: 42.5 (#43)
- Gemini 2.0 Flash (Feb 2025): 15.2 (#308)

| Benchmark | Claude Opus 4.5 | Gemini 2.0 Flash (Feb 2025) |
|---|---|---|
| ARC-AGI-2 | 37.6% | 1.3% |
| SimpleBench | 62% | 31.1% |
| Kagi LLM Benchmark | 80.2% | 37.8% |
| EnigmaEval | 11.9% | 1.1% |
| LMArena Hard Prompts | 1476 | 1346 |
| DTBench | 89.9% | 63.2% |
| Epoch Capabilities Index | 150.1 | 135.36 |
| NYT Connections (extended) | 52.5% | — |
| ARC-AGI-1 | 80% | — |
| Chess Puzzles | 12% | — |
| EBR-Bench | 14.3% | — |
| LiveBench Reasoning | — | 78.2% |
| Mystery Game Puzzles | 22% | — |
| LiveBench Data Analysis | — | 69.4% |
| LMCA | 44.5% | — |
| ForecastBench | 60.7 | — |
| LiveBench | — | 66.9% |

## Math

- Claude Opus 4.5: 38.5 (#85)
- Gemini 2.0 Flash (Feb 2025): 36.1 (#127)

| Benchmark | Claude Opus 4.5 | Gemini 2.0 Flash (Feb 2025) |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 86.1% | 57.8% |
| LMArena Math | 1463 | 1351 |
| FrontierMath (Feb 2025 set) | 20.7% | 1.7% |
| FrontierMath (Tiers 1-3) | 34.4% | — |
| FrontierMath Tier 4 | 4.9% | — |
| ProofBench | 36% | — |
| Omni-MATH | — | 45.9% |
| LiveBench Math | — | 75.8% |
| MATH Level 5 | — | 82.2% |
| FrontierMath Tier 4 (v1) | 4.2% | — |

## Knowledge

- Claude Opus 4.5: 56.4 (#38)
- Gemini 2.0 Flash (Feb 2025): 32.0 (#207)

| Benchmark | Claude Opus 4.5 | Gemini 2.0 Flash (Feb 2025) |
|---|---|---|
| GPQA Diamond | 86% | 64.1% |
| Humanity's Last Exam | 25.2% | 6.6% |
| LMArena Expert | 1488 | 1340 |
| SimpleQA Verified | 45.7% | — |
| MMLU-Pro | — | 73.7% |
| Confabulations | — | 12.4% |
| Vectara Hallucination Rate | 10.9% | — |
| GPQA (HELM) | — | 55.6% |
| MMLU | — | 79.7% |

## Multimodal

- Claude Opus 4.5: 31.1 (#99)
- Gemini 2.0 Flash (Feb 2025): 35.9 (#74)

| Benchmark | Claude Opus 4.5 | Gemini 2.0 Flash (Feb 2025) |
|---|---|---|
| GeoBench | 75% | 77% |
| LMArena Vision | — | 1158 |
| VPCT | 40% | — |
| Furniture Assembly | 28.3% | — |
| LMArena Document | 1462 | — |

## Multilingual

- Claude Opus 4.5: 54.5 (#45)
- Gemini 2.0 Flash (Feb 2025): 47.6 (#144)

| Benchmark | Claude Opus 4.5 | Gemini 2.0 Flash (Feb 2025) |
|---|---|---|
| LMArena Non-English | 1438 | 1342 |
| LMArena Chinese | 1470 | 1373 |
| LMArena French | 1471 | 1390 |
| LMArena German | 1449 | 1354 |
| LMArena Japanese | 1415 | 1293 |
| LMArena Korean | 1424 | 1314 |
| LMArena Russian | 1448 | 1351 |
| LMArena Spanish | 1455 | 1363 |

## Instruction Following

- Claude Opus 4.5: 77.7 (#20)
- Gemini 2.0 Flash (Feb 2025): 74.6 (#91)

| Benchmark | Claude Opus 4.5 | Gemini 2.0 Flash (Feb 2025) |
|---|---|---|
| LMArena Instruction Following | 1478 | 1336 |
| LiveBench Instruction Following | — | 85.8% |
| IFEval | — | 84.1% |

## Long Context

- Claude Opus 4.5: 46.4 (#21)
- Gemini 2.0 Flash (Feb 2025): 38.1 (#198)

| Benchmark | Claude Opus 4.5 | Gemini 2.0 Flash (Feb 2025) |
|---|---|---|
| LMArena Longer Query | 1480 | 1345 |
| Fiction.LiveBench | — | 61.1% |
| CL-bench | 21.1% | — |

## Writing & Preference

- Claude Opus 4.5: 68.2 (#28)
- Gemini 2.0 Flash (Feb 2025): 49.8 (#184)

| Benchmark | Claude Opus 4.5 | Gemini 2.0 Flash (Feb 2025) |
|---|---|---|
| LMArena Text | 1451 | 1354 |
| LMArena Creative Writing | 1445 | 1340 |
| EQ-Bench Creative Writing | 1687 | 1128 |
| LMArena Multi-Turn | 1466 | 1350 |
| Short-Story Creative Writing | — | 73.8% |
| WildBench | — | 80% |
| LiveBench Language | — | 51.3% |

## FAQ

### Is Claude Opus 4.5 better than Gemini 2.0 Flash (Feb 2025)?

Claude Opus 4.5 is the stronger model overall, scoring 50.5 to 34.8 on the Noometry Index.

### Is Claude Opus 4.5 or Gemini 2.0 Flash (Feb 2025) better for coding?

Claude Opus 4.5 scores higher on coding benchmarks: 55.4 versus 28.2 in the Noometry coding category.

### How many benchmarks do Claude Opus 4.5 and Gemini 2.0 Flash (Feb 2025) share?

31 benchmarks have published results for both models. Claude Opus 4.5 has 69 scored results on Noometry and Gemini 2.0 Flash (Feb 2025) has 54.