# Claude Opus 5 vs Gemini 3.7 Flash

> Claude Opus 5 is the stronger model overall, scoring 67.8 to 59.8 on the Noometry Index. Gemini 3.7 Flash costs 6.7× less per token, which makes it the better buy when Claude Opus 5's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/claude-opus-5-vs-gemini-3-7-flash
- Last updated: 2026-10-10
- Shared benchmarks: 43

## Summary

- They share 43 benchmarks with published results for both. Claude Opus 5 scores higher in 9 categories and Gemini 3.7 Flash in 1 category; 9 gaps are clear of the uncertainty.
- The widest gap is in math, where Claude Opus 5 leads 86.2 to 69.6.
- The biggest single-benchmark swing is ProofBench: 99% for Claude Opus 5 and 58% for Gemini 3.7 Flash.
- Gemini 3.7 Flash is cheaper at $0.75 / $3.75 per million input/output tokens, against $5 / $25 for Claude Opus 5.
- Gemini 3.7 Flash accepts more context: 1.05M tokens versus 1M.

## Snapshot

| | Claude Opus 5 | Gemini 3.7 Flash |
|---|---|---|
| Provider | Anthropic | Google |
| Noometry Index | 67.8 | 59.8 |
| Rank | 4 | 14 |
| Context | 1M | 1.05M |
| Input $/M | $5 | $0.75 |
| Output $/M | $25 | $3.75 |
| Weights | Proprietary | Proprietary |

## Coding

- Claude Opus 5: 67.5 (#5)
- Gemini 3.7 Flash: 56.2 (#22)

| Benchmark | Claude Opus 5 | Gemini 3.7 Flash |
|---|---|---|
| DeepSWE | 73.6% | 65.5% |
| FrontierCode | 53.4% | 43.6% |
| LMArena WebDev | 1691 | 1592 |
| FrontierSWE | 52% | 20.3% |
| SciCode | 56.4% | 59.8% |
| LMArena Coding | 1534 | 1497 |
| ALE-Bench | 2,165 | 904.3 |
| CursorBench | 46.6% | — |
| WeirdML | 91.8% | — |

## Agentic & Tool Use

- Claude Opus 5: 55.6 (#1)
- Gemini 3.7 Flash: 42.1 (#19)

| Benchmark | Claude Opus 5 | Gemini 3.7 Flash |
|---|---|---|
| APEX-Agents | 65.8% | 67.8% |
| GDP.pdf | 24% | 23.8% |
| OSWorld 2.0 | 31.4% | — |
| Remote Labor Index | — | 5% |
| τ²-bench Banking | 48.7% | — |
| PostTrainBench | 35% | — |
| BALROG | 63.4% | — |
| GBAEval | 79.6% | — |
| Vending-Bench 2 | 11,182 | — |

## Reasoning

- Claude Opus 5: 77.2 (#4)
- Gemini 3.7 Flash: 70.0 (#15)

| Benchmark | Claude Opus 5 | Gemini 3.7 Flash |
|---|---|---|
| ARC-AGI-2 | 90.4% | 84.6% |
| NYT Connections (extended) | 94.3% | 94% |
| ARC-AGI-1 | 97.5% | 95.5% |
| CritPt | 29.1% | 14.3% |
| Chess Puzzles | 42% | 47% |
| LMArena Hard Prompts | 1526 | 1494 |
| Mystery Game Puzzles | 59% | 37% |
| DTBench | 97.9% | 96.8% |
| LMCA | 64.5% | 50.4% |
| Epoch Capabilities Index | 162.78 | 157.27 |
| SimpleBench | 80.6% | — |
| EBR-Bench | 45.7% | — |
| Bench to the Future 3 | 0.12 | — |

## Math

- Claude Opus 5: 86.2 (#8)
- Gemini 3.7 Flash: 69.6 (#23)

| Benchmark | Claude Opus 5 | Gemini 3.7 Flash |
|---|---|---|
| FrontierMath (Tiers 1-3) | 85.6% | 71.6% |
| FrontierMath Tier 4 | 73.2% | 36.6% |
| OTIS Mock AIME 2024-2025 | 98.9% | 97.2% |
| ProofBench | 99% | 58% |
| LMArena Math | 1531 | 1507 |

## Knowledge

- Claude Opus 5: 66.8 (#9)
- Gemini 3.7 Flash: 69.7 (#5)

| Benchmark | Claude Opus 5 | Gemini 3.7 Flash |
|---|---|---|
| GPQA Diamond | 93.9% | 94.8% |
| SimpleQA Verified | 59.9% | 69.2% |
| LMArena Expert | 1557 | 1508 |

## Multimodal

- Claude Opus 5: 50.8 (#8)
- Gemini 3.7 Flash: 37.3 (#73)

| Benchmark | Claude Opus 5 | Gemini 3.7 Flash |
|---|---|---|
| LMArena Vision | 1319 | 1316 |
| Furniture Assembly | 60.8% | 26.7% |
| Blueprint-Bench 2 | 30.4% | — |
| LMArena Document | 1516 | — |

## Multilingual

- Claude Opus 5: 58.8 (#4)
- Gemini 3.7 Flash: 57.6 (#7)

| Benchmark | Claude Opus 5 | Gemini 3.7 Flash |
|---|---|---|
| LMArena Non-English | 1501 | 1484 |
| LMArena Chinese | 1574 | 1548 |
| LMArena French | 1519 | 1505 |
| LMArena German | 1524 | 1498 |
| LMArena Japanese | 1516 | 1512 |
| LMArena Korean | 1521 | 1483 |
| LMArena Russian | 1507 | 1516 |
| LMArena Spanish | 1519 | 1503 |

## Instruction Following

- Claude Opus 5: 79.2 (#7)
- Gemini 3.7 Flash: 77.7 (#15)

| Benchmark | Claude Opus 5 | Gemini 3.7 Flash |
|---|---|---|
| LMArena Instruction Following | 1517 | 1483 |

## Long Context

- Claude Opus 5: 46.5 (#21)
- Gemini 3.7 Flash: 45.7 (#30)

| Benchmark | Claude Opus 5 | Gemini 3.7 Flash |
|---|---|---|
| LMArena Longer Query | 1515 | 1492 |

## Writing & Preference

- Claude Opus 5: 79.2 (#1)
- Gemini 3.7 Flash: 71.2 (#20)

| Benchmark | Claude Opus 5 | Gemini 3.7 Flash |
|---|---|---|
| LMArena Text | 1507 | 1486 |
| LMArena Creative Writing | 1491 | 1490 |
| EQ-Bench Creative Writing | 2133 | 1723 |
| LMArena Multi-Turn | 1499 | 1489 |
| EQ-Bench 4 | 1385 | — |

## FAQ

### Is Claude Opus 5 better than Gemini 3.7 Flash?

Claude Opus 5 is the stronger model overall, scoring 67.8 to 59.8 on the Noometry Index. Gemini 3.7 Flash costs 6.7× less per token, which makes it the better buy when Claude Opus 5's lead doesn't matter for your workload.

### Which is cheaper, Claude Opus 5 or Gemini 3.7 Flash?

Gemini 3.7 Flash is cheaper. It lists at $0.75 per million input tokens and $3.75 per million output tokens; Claude Opus 5 lists at $5 and $25.

### Is Claude Opus 5 or Gemini 3.7 Flash better for coding?

Claude Opus 5 scores higher on coding benchmarks: 67.5 versus 56.2 in the Noometry coding category.

### Which has the bigger context window?

Gemini 3.7 Flash does, with 1.05M tokens against 1M.

### How many benchmarks do Claude Opus 5 and Gemini 3.7 Flash share?

43 benchmarks have published results for both models. Claude Opus 5 has 57 scored results on Noometry and Gemini 3.7 Flash has 44.