# Claude Opus 4 vs Gemini 3.5 Flash Lite

> Claude Opus 4 is the stronger model overall, scoring 42.9 to 41.8 on the Noometry Index. Gemini 3.5 Flash Lite costs 35× less per token, which makes it the better buy when Claude Opus 4's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/claude-opus-4-vs-gemini-3-5-flash-lite
- Last updated: 2026-10-10
- Shared benchmarks: 28

## Summary

- They share 28 benchmarks with published results for both. Claude Opus 4 scores higher in 4 categories and Gemini 3.5 Flash Lite in 6 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in math, where Claude Opus 4 leads 40.2 to 25.7.
- The biggest single-benchmark swing is ARC-AGI-1: 35.7% for Claude Opus 4 and 53.5% 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.
- Gemini 3.5 Flash Lite accepts more context: 1.05M tokens versus 200K.

## Snapshot

| | Claude Opus 4 | Gemini 3.5 Flash Lite |
|---|---|---|
| Provider | Anthropic | Google |
| Noometry Index | 42.9 | 41.8 |
| Rank | 93 | 113 |
| Context | 200K | 1.05M |
| Input $/M | $15 | $0.30 |
| Output $/M | $75 | $2.50 |
| Weights | Proprietary | Proprietary |

## Coding

- Claude Opus 4: 47.8 (#55)
- Gemini 3.5 Flash Lite: 42.1 (#96)

| Benchmark | Claude Opus 4 | Gemini 3.5 Flash Lite |
|---|---|---|
| WeirdML | 43.7% | 39% |
| LMArena Coding | 1442 | 1455 |
| SWE-bench Verified | 70.7% | — |
| SWE-bench Verified (bash only) | 67.6% | — |
| Aider Polyglot | 72% | — |
| LMArena WebDev | — | 1440 |
| SciCode | — | 41.3% |
| GSO | 6.9% | — |
| ALE-Bench | — | 765.27 |
| AlgoTune | 1.33 | — |

## Agentic & Tool Use

- Claude Opus 4: 34.5 (#39)
- Gemini 3.5 Flash Lite: 28.6 (#82)

| Benchmark | Claude Opus 4 | Gemini 3.5 Flash Lite |
|---|---|---|
| Cybench | 38% | — |
| DeepResearch Bench | 46.8% | — |
| GDP.pdf | — | 10% |
| LMArena Search | 1127 | — |
| METR Time Horizons | 63.9% | — |

## Reasoning

- Claude Opus 4: 27.4 (#104)
- Gemini 3.5 Flash Lite: 27.8 (#95)

| Benchmark | Claude Opus 4 | Gemini 3.5 Flash Lite |
|---|---|---|
| ARC-AGI-2 | 8.6% | 10.3% |
| ARC-AGI-1 | 35.7% | 53.5% |
| CritPt | 0.3% | 0% |
| LMArena Hard Prompts | 1399 | 1441 |
| DTBench | 81.6% | 83.5% |
| LMCA | 37.4% | 37.6% |
| Epoch Capabilities Index | 142.67 | 145.12 |
| SimpleBench | 58.8% | — |
| Kagi LLM Benchmark | 74.3% | — |
| NYT Connections (extended) | — | 60.4% |
| Chess Puzzles | — | 22% |
| EnigmaEval | 5.6% | — |
| Mystery Game Puzzles | — | 19% |
| ForecastBench | 61.1 | — |

## Math

- Claude Opus 4: 40.2 (#80)
- Gemini 3.5 Flash Lite: 25.7 (#245)

| Benchmark | Claude Opus 4 | Gemini 3.5 Flash Lite |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 64.4% | 71.1% |
| LMArena Math | 1391 | 1431 |
| FrontierMath (Tiers 1-3) | — | 26% |
| FrontierMath Tier 4 | — | 0% |
| ProofBench | — | 13% |
| Omni-MATH | 61.6% | — |
| MATH Level 5 | 85% | — |
| FrontierMath (Feb 2025 set) | 4.5% | — |
| FrontierMath Tier 4 (v1) | 4.2% | — |

## Knowledge

- Claude Opus 4: 43.9 (#82)
- Gemini 3.5 Flash Lite: 50.0 (#66)

| Benchmark | Claude Opus 4 | Gemini 3.5 Flash Lite |
|---|---|---|
| GPQA Diamond | 76.3% | 83.3% |
| LMArena Expert | 1384 | 1430 |
| Humanity's Last Exam | 10.7% | — |
| MMLU-Pro | 87.5% | — |
| Confabulations | 15.9% | — |
| Vectara Hallucination Rate | 12% | — |
| GPQA (HELM) | 70.8% | — |

## Multimodal

- Claude Opus 4: 30.9 (#101)
- Gemini 3.5 Flash Lite: 40.3 (#38)

| Benchmark | Claude Opus 4 | Gemini 3.5 Flash Lite |
|---|---|---|
| LMArena Vision | 1192 | 1266 |
| GeoBench | 49% | — |
| VPCT | 38% | — |

## Multilingual

- Claude Opus 4: 49.0 (#133)
- Gemini 3.5 Flash Lite: 53.8 (#59)

| Benchmark | Claude Opus 4 | Gemini 3.5 Flash Lite |
|---|---|---|
| LMArena Non-English | 1362 | 1428 |
| LMArena Chinese | 1386 | 1467 |
| LMArena French | 1370 | 1452 |
| LMArena German | 1391 | 1454 |
| LMArena Japanese | 1332 | 1428 |
| LMArena Korean | 1318 | 1406 |
| LMArena Russian | 1392 | 1443 |
| LMArena Spanish | 1388 | 1440 |

## Instruction Following

- Claude Opus 4: 77.3 (#26)
- Gemini 3.5 Flash Lite: 75.0 (#77)

| Benchmark | Claude Opus 4 | Gemini 3.5 Flash Lite |
|---|---|---|
| LMArena Instruction Following | 1406 | 1420 |
| IFEval | 91.8% | — |

## Long Context

- Claude Opus 4: 39.5 (#167)
- Gemini 3.5 Flash Lite: 43.8 (#80)

| Benchmark | Claude Opus 4 | Gemini 3.5 Flash Lite |
|---|---|---|
| LMArena Longer Query | 1422 | 1435 |
| Fiction.LiveBench | 61.1% | — |

## Writing & Preference

- Claude Opus 4: 61.4 (#85)
- Gemini 3.5 Flash Lite: 64.4 (#55)

| Benchmark | Claude Opus 4 | Gemini 3.5 Flash Lite |
|---|---|---|
| LMArena Text | 1377 | 1436 |
| LMArena Creative Writing | 1386 | 1419 |
| EQ-Bench Creative Writing | 1580 | 1559 |
| LMArena Multi-Turn | 1396 | 1445 |
| Short-Story Creative Writing | 83.6% | — |
| WildBench | 85.2% | — |

## FAQ

### Is Claude Opus 4 better than Gemini 3.5 Flash Lite?

Claude Opus 4 is the stronger model overall, scoring 42.9 to 41.8 on the Noometry Index. Gemini 3.5 Flash Lite costs 35× less per token, which makes it the better buy when Claude Opus 4's lead doesn't matter for your workload.

### Which is cheaper, Claude Opus 4 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 lists at $15 and $75.

### Is Claude Opus 4 or Gemini 3.5 Flash Lite better for coding?

Claude Opus 4 scores higher on coding benchmarks: 47.8 versus 42.1 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 and Gemini 3.5 Flash Lite share?

28 benchmarks have published results for both models. Claude Opus 4 has 56 scored results on Noometry and Gemini 3.5 Flash Lite has 38.