# Gemini 3.8 Flash vs Kimi K2 Thinking Turbo

> Gemini 3.8 Flash is the stronger model overall, scoring 61.8 to 45.8 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gemini-3-8-flash-vs-kimi-k2-thinking-turbo
- Last updated: 2026-10-10
- Shared benchmarks: 21

## Summary

- They share 21 benchmarks with published results for both. Gemini 3.8 Flash scores higher in 8 categories and Kimi K2 Thinking Turbo in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Gemini 3.8 Flash leads 76.9 to 32.5.
- The biggest single-benchmark swing is Chess Puzzles: 61% for Gemini 3.8 Flash and 20% for Kimi K2 Thinking Turbo.
- Kimi K2 Thinking Turbo has downloadable open weights; the other is API-only.

## Snapshot

| | Gemini 3.8 Flash | Kimi K2 Thinking Turbo |
|---|---|---|
| Provider | Google | Moonshot AI |
| Noometry Index | 61.8 | 45.8 |
| Rank | 11 | 70 |
| Context | 1.05M | — |
| Input $/M | $0.75 | — |
| Output $/M | $3.75 | — |
| Weights | Proprietary | Open |

## Coding

- Gemini 3.8 Flash: 59.2 (#15)
- Kimi K2 Thinking Turbo: 38.4 (#178)

| Benchmark | Gemini 3.8 Flash | Kimi K2 Thinking Turbo |
|---|---|---|
| LMArena WebDev | 1584 | 1322 |
| LMArena Coding | 1510 | 1454 |
| DeepSWE | 73.8% | — |
| FrontierCode | 41.2% | — |
| CursorBench | 39.6% | — |
| FrontierSWE | 19.6% | — |
| SciCode | 56.6% | — |
| WeirdML | 84.8% | — |
| ALE-Bench | 1,270 | — |

## Agentic & Tool Use

- Gemini 3.8 Flash: 41.8 (#21)
- Kimi K2 Thinking Turbo: —

| Benchmark | Gemini 3.8 Flash | Kimi K2 Thinking Turbo |
|---|---|---|
| APEX-Agents | 64.3% | — |
| Remote Labor Index | 5.8% | — |
| GDP.pdf | 23.4% | — |
| Vending-Bench 2 | 5,094 | — |

## Reasoning

- Gemini 3.8 Flash: 76.9 (#5)
- Kimi K2 Thinking Turbo: 32.5 (#75)

| Benchmark | Gemini 3.8 Flash | Kimi K2 Thinking Turbo |
|---|---|---|
| Chess Puzzles | 61% | 20% |
| LMArena Hard Prompts | 1508 | 1428 |
| ARC-AGI-2 | 89.2% | — |
| NYT Connections (extended) | 97.4% | — |
| ARC-AGI-1 | 98.5% | — |
| CritPt | 18.3% | — |
| Mystery Game Puzzles | 47% | — |
| DTBench | 95.7% | — |
| LMCA | 52.9% | — |
| Surface Evolver Bench | 76.9% | — |
| Epoch Capabilities Index | 156.71 | — |

## Math

- Gemini 3.8 Flash: 65.3 (#28)
- Kimi K2 Thinking Turbo: 47.4 (#68)

| Benchmark | Gemini 3.8 Flash | Kimi K2 Thinking Turbo |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 98.9% | 83.1% |
| LMArena Math | 1528 | 1429 |
| FrontierMath (Tiers 1-3) | 68.4% | — |
| FrontierMath Tier 4 | 22% | — |
| ProofBench | 48% | — |

## Knowledge

- Gemini 3.8 Flash: 74.8 (#2)
- Kimi K2 Thinking Turbo: 50.9 (#69)

| Benchmark | Gemini 3.8 Flash | Kimi K2 Thinking Turbo |
|---|---|---|
| GPQA Diamond | 95.4% | 84.2% |
| LMArena Expert | 1524 | 1439 |
| Humanity's Last Exam | 44.5% | — |
| SimpleQA Verified | 69.7% | — |

## Multimodal

- Gemini 3.8 Flash: 40.7 (#45)
- Kimi K2 Thinking Turbo: —

| Benchmark | Gemini 3.8 Flash | Kimi K2 Thinking Turbo |
|---|---|---|
| LMArena Vision | 1314 | — |
| Blueprint-Bench 2 | 38.6% | — |
| Furniture Assembly | 31.7% | — |

## Multilingual

- Gemini 3.8 Flash: 58.0 (#5)
- Kimi K2 Thinking Turbo: 51.4 (#109)

| Benchmark | Gemini 3.8 Flash | Kimi K2 Thinking Turbo |
|---|---|---|
| LMArena Non-English | 1491 | 1398 |
| LMArena Chinese | 1554 | 1456 |
| LMArena French | 1498 | 1425 |
| LMArena German | 1493 | 1390 |
| LMArena Japanese | 1502 | 1357 |
| LMArena Korean | 1459 | 1330 |
| LMArena Russian | 1515 | 1391 |
| LMArena Spanish | 1485 | 1406 |

## Instruction Following

- Gemini 3.8 Flash: 78.0 (#13)
- Kimi K2 Thinking Turbo: 74.0 (#109)

| Benchmark | Gemini 3.8 Flash | Kimi K2 Thinking Turbo |
|---|---|---|
| LMArena Instruction Following | 1490 | 1403 |

## Long Context

- Gemini 3.8 Flash: 46.3 (#24)
- Kimi K2 Thinking Turbo: 43.2 (#102)

| Benchmark | Gemini 3.8 Flash | Kimi K2 Thinking Turbo |
|---|---|---|
| LMArena Longer Query | 1508 | 1415 |

## Writing & Preference

- Gemini 3.8 Flash: 72.2 (#15)
- Kimi K2 Thinking Turbo: 60.0 (#104)

| Benchmark | Gemini 3.8 Flash | Kimi K2 Thinking Turbo |
|---|---|---|
| LMArena Text | 1499 | 1415 |
| LMArena Creative Writing | 1492 | 1374 |
| LMArena Multi-Turn | 1501 | 1414 |
| EQ-Bench Creative Writing | 1748 | — |

## FAQ

### Is Gemini 3.8 Flash better than Kimi K2 Thinking Turbo?

Gemini 3.8 Flash is the stronger model overall, scoring 61.8 to 45.8 on the Noometry Index.

### Is Gemini 3.8 Flash or Kimi K2 Thinking Turbo better for coding?

Gemini 3.8 Flash scores higher on coding benchmarks: 59.2 versus 38.4 in the Noometry coding category.

### How many benchmarks do Gemini 3.8 Flash and Kimi K2 Thinking Turbo share?

21 benchmarks have published results for both models. Gemini 3.8 Flash has 50 scored results on Noometry and Kimi K2 Thinking Turbo has 21.