# Claude Opus 4.1 vs Gemini 3.5 Flash Lite

> Claude Opus 4.1 and Gemini 3.5 Flash Lite score almost the same on the Noometry Index (41.0 vs 41.5), so choose on price, context window or the category you care about most.

- Canonical page: https://noometry.com/compare/claude-opus-4-1-vs-gemini-3-5-flash-lite
- Last updated: 2026-10-12
- Shared benchmarks: 29

## Summary

- They share 29 benchmarks with published results for both. Claude Opus 4.1 scores higher in 5 categories and Gemini 3.5 Flash Lite in 5 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in multimodal, where Gemini 3.5 Flash Lite leads 41.1 to 26.8.
- The biggest single-benchmark swing is Chess Puzzles: 7% for Claude Opus 4.1 and 22% for Gemini 3.5 Flash Lite.
- Gemini 3.5 Flash Lite is cheaper at $0.30 / $2.50 per million input/output tokens, against $15 / $75 for Claude Opus 4.1.
- Gemini 3.5 Flash Lite accepts more context: 1.05M tokens versus 200K.

## Snapshot

| | Claude Opus 4.1 | Gemini 3.5 Flash Lite |
|---|---|---|
| Provider | Anthropic | Google |
| Noometry Index | 41.0 | 41.5 |
| Rank | 142 | 133 |
| Context | 200K | 1.05M |
| Input $/M | $15 | $0.30 |
| Output $/M | $75 | $2.50 |
| Weights | Proprietary | Proprietary |

## Coding

- Claude Opus 4.1: 44.4 (#73)
- Gemini 3.5 Flash Lite: 42.4 (#104)

| Benchmark | Claude Opus 4.1 | Gemini 3.5 Flash Lite |
|---|---|---|
| LMArena WebDev | 1390 | 1440 |
| WeirdML | 45.9% | 39% |
| LMArena Coding | 1479 | 1453 |
| ALE-Bench | 674.77 | 765.27 |
| SWE-bench Verified | 73.3% | — |
| SciCode | — | 41.3% |
| AlgoTune | 1.34 | — |

## Agentic & Tool Use

- Claude Opus 4.1: 35.0 (#41)
- Gemini 3.5 Flash Lite: 25.7 (#107)

| Benchmark | Claude Opus 4.1 | Gemini 3.5 Flash Lite |
|---|---|---|
| Terminal-Bench | 38% | — |
| APEX-Agents | — | 29.3% |
| GDPval | 43.6% | — |
| Cybench | 42% | — |
| DeepResearch Bench | 48.3% | — |
| GDP.pdf | — | 10% |
| LMArena Search | 1148 | — |
| METR Time Horizons | 66.8% | — |

## Reasoning

- Claude Opus 4.1: 32.2 (#76)
- Gemini 3.5 Flash Lite: 27.8 (#114)

| Benchmark | Claude Opus 4.1 | Gemini 3.5 Flash Lite |
|---|---|---|
| Chess Puzzles | 7% | 22% |
| LMArena Hard Prompts | 1443 | 1441 |
| Mystery Game Puzzles | 21% | 19% |
| DTBench | 80% | 83.5% |
| LMCA | 37.1% | 37.6% |
| Epoch Capabilities Index | 144.12 | 145.13 |
| ARC-AGI-2 | — | 10.3% |
| SimpleBench | 60% | — |
| NYT Connections (extended) | — | 60.4% |
| ARC-AGI-1 | — | 53.5% |
| CritPt | — | 0% |
| EnigmaEval | 7.2% | — |
| EBR-Bench | 7.9% | — |
| ForecastBench | 62 | — |

## Math

- Claude Opus 4.1: 22.3 (#277)
- Gemini 3.5 Flash Lite: 25.9 (#264)

| Benchmark | Claude Opus 4.1 | Gemini 3.5 Flash Lite |
|---|---|---|
| FrontierMath (Tiers 1-3) | 12.6% | 26% |
| FrontierMath Tier 4 | 2.4% | 0% |
| OTIS Mock AIME 2024-2025 | 68.9% | 71.1% |
| LMArena Math | 1431 | 1433 |
| ProofBench | — | 13% |
| FrontierMath (Feb 2025 set) | 7.2% | — |
| FrontierMath Tier 4 (v1) | 4.2% | — |

## Knowledge

- Claude Opus 4.1: 42.0 (#101)
- Gemini 3.5 Flash Lite: 50.1 (#72)

| Benchmark | Claude Opus 4.1 | Gemini 3.5 Flash Lite |
|---|---|---|
| GPQA Diamond | 77.3% | 83.3% |
| LMArena Expert | 1439 | 1435 |
| Humanity's Last Exam | 11.5% | — |
| Confabulations | 17.1% | — |
| Vectara Hallucination Rate | 11.8% | — |

## Multimodal

- Claude Opus 4.1: 26.8 (#119)
- Gemini 3.5 Flash Lite: 41.1 (#40)

| Benchmark | Claude Opus 4.1 | Gemini 3.5 Flash Lite |
|---|---|---|
| LMArena Vision | — | 1268 |
| VPCT | 35% | — |

## Multilingual

- Claude Opus 4.1: 52.0 (#95)
- Gemini 3.5 Flash Lite: 53.5 (#63)

| Benchmark | Claude Opus 4.1 | Gemini 3.5 Flash Lite |
|---|---|---|
| LMArena Non-English | 1405 | 1427 |
| LMArena Chinese | 1427 | 1469 |
| LMArena French | 1431 | 1451 |
| LMArena German | 1413 | 1454 |
| LMArena Japanese | 1378 | 1427 |
| LMArena Korean | 1380 | 1407 |
| LMArena Russian | 1422 | 1443 |
| LMArena Spanish | 1448 | 1442 |

## Instruction Following

- Claude Opus 4.1: 75.6 (#58)
- Gemini 3.5 Flash Lite: 74.8 (#85)

| Benchmark | Claude Opus 4.1 | Gemini 3.5 Flash Lite |
|---|---|---|
| LMArena Instruction Following | 1435 | 1420 |

## Long Context

- Claude Opus 4.1: 44.5 (#63)
- Gemini 3.5 Flash Lite: 43.9 (#84)

| Benchmark | Claude Opus 4.1 | Gemini 3.5 Flash Lite |
|---|---|---|
| LMArena Longer Query | 1455 | 1435 |

## Writing & Preference

- Claude Opus 4.1: 62.4 (#74)
- Gemini 3.5 Flash Lite: 64.2 (#57)

| Benchmark | Claude Opus 4.1 | Gemini 3.5 Flash Lite |
|---|---|---|
| LMArena Text | 1419 | 1435 |
| LMArena Creative Writing | 1412 | 1420 |
| LMArena Multi-Turn | 1444 | 1445 |
| Short-Story Creative Writing | 84.7% | — |
| EQ-Bench Creative Writing | — | 1559 |

## FAQ

### Is Claude Opus 4.1 better than Gemini 3.5 Flash Lite?

Claude Opus 4.1 and Gemini 3.5 Flash Lite score almost the same on the Noometry Index (41.0 vs 41.5), so choose on price, context window or the category you care about most.

### Which is cheaper, Claude Opus 4.1 or Gemini 3.5 Flash Lite?

Gemini 3.5 Flash Lite is cheaper. It lists at $0.30 per million input tokens and $2.50 per million output tokens; Claude Opus 4.1 lists at $15 and $75.

### Is Claude Opus 4.1 or Gemini 3.5 Flash Lite better for coding?

Claude Opus 4.1 scores higher on coding benchmarks: 44.4 versus 42.4 in the Noometry coding category.

### Which has the bigger context window?

Gemini 3.5 Flash Lite does, with 1.05M tokens against 200K.

### How many benchmarks do Claude Opus 4.1 and Gemini 3.5 Flash Lite share?

29 benchmarks have published results for both models. Claude Opus 4.1 has 48 scored results on Noometry and Gemini 3.5 Flash Lite has 39.