# Claude Opus 4.1 vs Gemini 3 Flash Preview

> Gemini 3 Flash Preview is the stronger model overall, scoring 52.3 to 40.8 on the Noometry Index.

- Canonical page: https://noometry.com/compare/claude-opus-4-1-vs-gemini-3-flash-preview
- Last updated: 2026-10-10
- Shared benchmarks: 39

## Summary

- They share 39 benchmarks with published results for both. Claude Opus 4.1 scores higher in 1 category and Gemini 3 Flash Preview in 9 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where Gemini 3 Flash Preview leads 51.4 to 22.0.
- The biggest single-benchmark swing is FrontierMath (Tiers 1-3): 12.6% for Claude Opus 4.1 and 51.2% for Gemini 3 Flash Preview.
- Gemini 3 Flash Preview is cheaper at $0.50 / $3 per million input/output tokens, against $15 / $75 for Claude Opus 4.1.
- Gemini 3 Flash Preview accepts more context: 1.05M tokens versus 200K.

## Snapshot

| | Claude Opus 4.1 | Gemini 3 Flash Preview |
|---|---|---|
| Provider | Anthropic | Google |
| Noometry Index | 40.8 | 52.3 |
| Rank | 136 | 33 |
| Context | 200K | 1.05M |
| Input $/M | $15 | $0.50 |
| Output $/M | $75 | $3 |
| Weights | Proprietary | Proprietary |

## Coding

- Claude Opus 4.1: 44.3 (#69)
- Gemini 3 Flash Preview: 51.5 (#35)

| Benchmark | Claude Opus 4.1 | Gemini 3 Flash Preview |
|---|---|---|
| SWE-bench Verified | 73.3% | 75.4% |
| LMArena WebDev | 1390 | 1439 |
| WeirdML | 45.9% | 61.6% |
| LMArena Coding | 1479 | 1460 |
| ALE-Bench | 674.77 | 1,367 |
| SWE-bench Verified (bash only) | — | 75.8% |
| SWE-bench Multilingual | — | 72.7% |
| GSO | — | 9.8% |
| AlgoTune | 1.34 | — |

## Agentic & Tool Use

- Claude Opus 4.1: 34.8 (#38)
- Gemini 3 Flash Preview: 38.6 (#27)

| Benchmark | Claude Opus 4.1 | Gemini 3 Flash Preview |
|---|---|---|
| Terminal-Bench | 38% | 64.3% |
| DeepResearch Bench | 48.3% | 49.8% |
| LMArena Search | 1148 | 1198 |
| GDPval | 43.6% | — |
| τ²-bench Airline | — | 82.5% |
| τ²-bench Banking | — | 27.3% |
| τ²-bench Retail | — | 76.8% |
| τ²-bench Telecom | — | 91.2% |
| Cybench | 42% | — |
| BALROG | — | 48.1% |
| GDP.pdf | — | 10% |
| METR Time Horizons | 66.8% | — |
| Vending-Bench 2 | — | 3,635 |

## Reasoning

- Claude Opus 4.1: 31.6 (#70)
- Gemini 3 Flash Preview: 49.2 (#35)

| Benchmark | Claude Opus 4.1 | Gemini 3 Flash Preview |
|---|---|---|
| SimpleBench | 60% | 61.1% |
| Chess Puzzles | 7% | 40% |
| LMArena Hard Prompts | 1443 | 1465 |
| Mystery Game Puzzles | 21% | 26% |
| DTBench | 80% | 89.1% |
| LMCA | 37.1% | 43.1% |
| Epoch Capabilities Index | 144.11 | 151.83 |
| ForecastBench | 62 | 58.5 |
| ARC-AGI-2 | — | 33.6% |
| NYT Connections (extended) | — | 83.1% |
| ARC-AGI-1 | — | 84.7% |
| EnigmaEval | 7.2% | — |
| EBR-Bench | 7.9% | — |

## Math

- Claude Opus 4.1: 22.0 (#267)
- Gemini 3 Flash Preview: 51.4 (#42)

| Benchmark | Claude Opus 4.1 | Gemini 3 Flash Preview |
|---|---|---|
| FrontierMath (Tiers 1-3) | 12.6% | 51.2% |
| FrontierMath Tier 4 | 2.4% | 17.1% |
| OTIS Mock AIME 2024-2025 | 68.9% | 95.6% |
| LMArena Math | 1430 | 1472 |
| FrontierMath (Feb 2025 set) | 7.2% | 35.6% |
| FrontierMath Tier 4 (v1) | 4.2% | 4.2% |
| MathArena Final-Answer Competitions | — | 67.6% |
| ProofBench | — | 15% |

## Knowledge

- Claude Opus 4.1: 41.9 (#93)
- Gemini 3 Flash Preview: 58.8 (#30)

| Benchmark | Claude Opus 4.1 | Gemini 3 Flash Preview |
|---|---|---|
| GPQA Diamond | 77.3% | 89.4% |
| Vectara Hallucination Rate | 11.8% | 13.5% |
| LMArena Expert | 1439 | 1461 |
| Humanity's Last Exam | 11.5% | — |
| SimpleQA Verified | — | 66.8% |
| Confabulations | 17.1% | — |

## Multimodal

- Claude Opus 4.1: 26.2 (#114)
- Gemini 3 Flash Preview: 45.3 (#15)

| Benchmark | Claude Opus 4.1 | Gemini 3 Flash Preview |
|---|---|---|
| VPCT | 35% | 72.6% |
| LMArena Vision | — | 1285 |
| GeoBench | — | 88% |
| Blueprint-Bench 2 | — | 0% |
| LMArena Document | — | 1413 |

## Multilingual

- Claude Opus 4.1: 52.1 (#90)
- Gemini 3 Flash Preview: 55.9 (#26)

| Benchmark | Claude Opus 4.1 | Gemini 3 Flash Preview |
|---|---|---|
| LMArena Non-English | 1405 | 1458 |
| LMArena Chinese | 1427 | 1510 |
| LMArena French | 1432 | 1478 |
| LMArena German | 1412 | 1497 |
| LMArena Japanese | 1378 | 1488 |
| LMArena Korean | 1381 | 1443 |
| LMArena Russian | 1421 | 1480 |
| LMArena Spanish | 1448 | 1470 |

## Instruction Following

- Claude Opus 4.1: 75.8 (#53)
- Gemini 3 Flash Preview: 75.8 (#52)

| Benchmark | Claude Opus 4.1 | Gemini 3 Flash Preview |
|---|---|---|
| LMArena Instruction Following | 1436 | 1437 |

## Long Context

- Claude Opus 4.1: 44.5 (#60)
- Gemini 3 Flash Preview: 44.4 (#63)

| Benchmark | Claude Opus 4.1 | Gemini 3 Flash Preview |
|---|---|---|
| LMArena Longer Query | 1455 | 1452 |

## Writing & Preference

- Claude Opus 4.1: 62.6 (#70)
- Gemini 3 Flash Preview: 65.6 (#44)

| Benchmark | Claude Opus 4.1 | Gemini 3 Flash Preview |
|---|---|---|
| LMArena Text | 1419 | 1466 |
| LMArena Creative Writing | 1412 | 1457 |
| LMArena Multi-Turn | 1444 | 1471 |
| Short-Story Creative Writing | 84.7% | — |

## FAQ

### Is Claude Opus 4.1 better than Gemini 3 Flash Preview?

Gemini 3 Flash Preview is the stronger model overall, scoring 52.3 to 40.8 on the Noometry Index.

### Which is cheaper, Claude Opus 4.1 or Gemini 3 Flash Preview?

Gemini 3 Flash Preview is cheaper. It lists at $0.50 per million input tokens and $3 per million output tokens; Claude Opus 4.1 lists at $15 and $75.

### Is Claude Opus 4.1 or Gemini 3 Flash Preview better for coding?

Gemini 3 Flash Preview scores higher on coding benchmarks: 51.5 versus 44.3 in the Noometry coding category.

### Which has the bigger context window?

Gemini 3 Flash Preview does, with 1.05M tokens against 200K.

### How many benchmarks do Claude Opus 4.1 and Gemini 3 Flash Preview share?

39 benchmarks have published results for both models. Claude Opus 4.1 has 48 scored results on Noometry and Gemini 3 Flash Preview has 59.