# Gemini 3.5 Flash vs Kimi K2.6

> Gemini 3.5 Flash is the stronger model overall, scoring 54.2 to 47.7 on the Noometry Index. Kimi K2.6 costs 2.0× less per token, which makes it the better buy when Gemini 3.5 Flash's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/gemini-3-5-flash-vs-kimi-k2-6
- Last updated: 2026-10-10
- Shared benchmarks: 46

## Summary

- They share 46 benchmarks with published results for both. Gemini 3.5 Flash scores higher in 8 categories and Kimi K2.6 in 2 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Gemini 3.5 Flash leads 62.8 to 40.5.
- The biggest single-benchmark swing is SimpleQA Verified: 66.2% for Gemini 3.5 Flash and 34.9% for Kimi K2.6.
- Kimi K2.6 is cheaper at $0.95 / $4 per million input/output tokens, against $1.50 / $9 for Gemini 3.5 Flash.
- Gemini 3.5 Flash accepts more context: 1.05M tokens versus 262K.
- Kimi K2.6 has downloadable open weights; the other is API-only.

## Snapshot

| | Gemini 3.5 Flash | Kimi K2.6 |
|---|---|---|
| Provider | Google | Moonshot AI |
| Noometry Index | 54.2 | 47.7 |
| Rank | 32 | 60 |
| Context | 1.05M | 262K |
| Input $/M | $1.50 | $0.95 |
| Output $/M | $9 | $4 |
| Weights | Proprietary | Open |

## Coding

- Gemini 3.5 Flash: 49.4 (#49)
- Kimi K2.6: 50.7 (#43)

| Benchmark | Gemini 3.5 Flash | Kimi K2.6 |
|---|---|---|
| SWE-bench Verified | 79.3% | 76.7% |
| LMArena WebDev | 1499 | 1509 |
| SciCode | 53.1% | 53.5% |
| WeirdML | 62.6% | 55.9% |
| LMArena Coding | 1492 | 1488 |
| ALE-Bench | 911.02 | 1,093 |
| DeepSWE | 37.4% | — |

## Agentic & Tool Use

- Gemini 3.5 Flash: 24.7 (#114)
- Kimi K2.6: 21.9 (#137)

| Benchmark | Gemini 3.5 Flash | Kimi K2.6 |
|---|---|---|
| GBAEval | 6.7% | 0.9% |
| GDP.pdf | 14% | 12% |
| Vending-Bench 2 | 5,396 | 6,205 |
| APEX-Agents | 27.5% | — |
| OSWorld 2.0 | — | 4.6% |
| ExploitBench | — | 18.4% |

## Reasoning

- Gemini 3.5 Flash: 62.8 (#18)
- Kimi K2.6: 40.5 (#55)

| Benchmark | Gemini 3.5 Flash | Kimi K2.6 |
|---|---|---|
| NYT Connections (extended) | 92.6% | 87.2% |
| CritPt | 13.1% | 8% |
| Chess Puzzles | 50% | 26% |
| EBR-Bench | 4.8% | 2.4% |
| LMArena Hard Prompts | 1488 | 1470 |
| Mystery Game Puzzles | 32% | 18% |
| DTBench | 94.7% | 90.9% |
| LMCA | 47.1% | 37.3% |
| Epoch Capabilities Index | 154.46 | 151.05 |
| ARC-AGI-2 | 72.1% | — |
| SimpleBench | 76.7% | — |
| ARC-AGI-1 | 92.5% | — |
| EnigmaEval | 25.4% | — |
| Surface Evolver Bench | 58.1% | — |
| ForecastBench | 59 | — |

## Math

- Gemini 3.5 Flash: 60.7 (#36)
- Kimi K2.6: 57.0 (#41)

| Benchmark | Gemini 3.5 Flash | Kimi K2.6 |
|---|---|---|
| FrontierMath (Tiers 1-3) | 62.8% | 57.2% |
| FrontierMath Tier 4 | 26.8% | 25.6% |
| MathArena Final-Answer Competitions | 76.3% | 72.9% |
| OTIS Mock AIME 2024-2025 | 95.6% | 96.1% |
| ProofBench | 31% | 16% |
| LMArena Math | 1504 | 1475 |
| FrontierMath (Feb 2025 set) | 39% | 39% |
| FrontierMath Tier 4 (v1) | 14.6% | 14.6% |

## Knowledge

- Gemini 3.5 Flash: 66.3 (#11)
- Kimi K2.6: 54.0 (#54)

| Benchmark | Gemini 3.5 Flash | Kimi K2.6 |
|---|---|---|
| GPQA Diamond | 92.8% | 90.8% |
| SimpleQA Verified | 66.2% | 34.9% |
| LMArena Expert | 1495 | 1491 |
| Vectara Hallucination Rate | — | 10.8% |

## Multimodal

- Gemini 3.5 Flash: 45.7 (#15)
- Kimi K2.6: 31.6 (#103)

| Benchmark | Gemini 3.5 Flash | Kimi K2.6 |
|---|---|---|
| LMArena Vision | 1310 | 1283 |
| Blueprint-Bench 2 | 33.6% | 3.9% |
| LMArena Document | 1463 | 1451 |
| Furniture Assembly | — | 21.7% |

## Multilingual

- Gemini 3.5 Flash: 57.0 (#13)
- Kimi K2.6: 54.9 (#37)

| Benchmark | Gemini 3.5 Flash | Kimi K2.6 |
|---|---|---|
| LMArena Non-English | 1476 | 1446 |
| LMArena Chinese | 1526 | 1521 |
| LMArena French | 1490 | 1471 |
| LMArena German | 1492 | 1450 |
| LMArena Japanese | 1486 | 1443 |
| LMArena Korean | 1451 | 1427 |
| LMArena Russian | 1493 | 1446 |
| LMArena Spanish | 1480 | 1464 |

## Instruction Following

- Gemini 3.5 Flash: 77.0 (#30)
- Kimi K2.6: 76.3 (#43)

| Benchmark | Gemini 3.5 Flash | Kimi K2.6 |
|---|---|---|
| LMArena Instruction Following | 1467 | 1451 |

## Long Context

- Gemini 3.5 Flash: 45.4 (#38)
- Kimi K2.6: 44.9 (#52)

| Benchmark | Gemini 3.5 Flash | Kimi K2.6 |
|---|---|---|
| LMArena Longer Query | 1482 | 1468 |

## Writing & Preference

- Gemini 3.5 Flash: 65.5 (#47)
- Kimi K2.6: 68.5 (#26)

| Benchmark | Gemini 3.5 Flash | Kimi K2.6 |
|---|---|---|
| LMArena Text | 1482 | 1455 |
| LMArena Creative Writing | 1470 | 1434 |
| EQ-Bench 4 | 1087 | 1202 |
| LMArena Multi-Turn | 1481 | 1453 |
| EQ-Bench Creative Writing | — | 1725 |

## FAQ

### Is Gemini 3.5 Flash better than Kimi K2.6?

Gemini 3.5 Flash is the stronger model overall, scoring 54.2 to 47.7 on the Noometry Index. Kimi K2.6 costs 2.0× less per token, which makes it the better buy when Gemini 3.5 Flash's lead doesn't matter for your workload.

### Which is cheaper, Gemini 3.5 Flash or Kimi K2.6?

Kimi K2.6 is cheaper. It lists at $0.95 per million input tokens and $4 per million output tokens; Gemini 3.5 Flash lists at $1.50 and $9.

### Is Gemini 3.5 Flash or Kimi K2.6 better for coding?

Kimi K2.6 scores higher on coding benchmarks: 50.7 versus 49.4 in the Noometry coding category.

### Which has the bigger context window?

Gemini 3.5 Flash does, with 1.05M tokens against 262K.

### How many benchmarks do Gemini 3.5 Flash and Kimi K2.6 share?

46 benchmarks have published results for both models. Gemini 3.5 Flash has 54 scored results on Noometry and Kimi K2.6 has 51.