# Gemini 1.5 Flash 8B vs Kimi K3

> Kimi K3 is the stronger model overall, scoring 59.5 to 29.7 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gemini-1-5-flash-8b-vs-kimi-k3
- Last updated: 2026-10-10
- Shared benchmarks: 20

## Summary

- They share 20 benchmarks with published results for both. Gemini 1.5 Flash 8B scores higher in 0 categories and Kimi K3 in 9 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in math, where Kimi K3 leads 74.0 to 13.3.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 4.6% for Gemini 1.5 Flash 8B and 97.2% for Kimi K3.
- Kimi K3 has downloadable open weights; the other is API-only.

## Snapshot

| | Gemini 1.5 Flash 8B | Kimi K3 |
|---|---|---|
| Provider | Google | Moonshot AI |
| Noometry Index | 29.7 | 59.5 |
| Rank | 292 | 12 |
| Context | — | 1.05M |
| Input $/M | — | $3 |
| Output $/M | — | $15 |
| Weights | Proprietary | Open |

## Coding

- Gemini 1.5 Flash 8B: 34.9 (#221)
- Kimi K3: 60.6 (#8)

| Benchmark | Gemini 1.5 Flash 8B | Kimi K3 |
|---|---|---|
| LMArena Coding | 1218 | 1509 |
| DeepSWE | — | 68.5% |
| FrontierCode | — | 44.2% |
| LMArena WebDev | — | 1659 |
| FrontierSWE | — | 25.9% |
| SciCode | — | 59.5% |
| WeirdML | — | 82.6% |
| ALE-Bench | — | 1,524 |

## Agentic & Tool Use

- Gemini 1.5 Flash 8B: —
- Kimi K3: 41.8 (#19)

| Benchmark | Gemini 1.5 Flash 8B | Kimi K3 |
|---|---|---|
| APEX-Agents | — | 50.6% |
| τ²-bench Banking | — | 37.1% |
| PostTrainBench | — | 32% |
| GBAEval | — | 48.3% |
| GDP.pdf | — | 19% |
| Vending-Bench 2 | — | 5,165 |

## Reasoning

- Gemini 1.5 Flash 8B: 19.2 (#242)
- Kimi K3: 63.0 (#15)

| Benchmark | Gemini 1.5 Flash 8B | Kimi K3 |
|---|---|---|
| LMArena Hard Prompts | 1210 | 1495 |
| DTBench | 50% | 91.2% |
| ARC-AGI-2 | — | 60.4% |
| SimpleBench | — | 60.7% |
| NYT Connections (extended) | — | 93.6% |
| ARC-AGI-1 | — | 94.5% |
| CritPt | — | 23.4% |
| Chess Puzzles | — | 39% |
| Mystery Game Puzzles | — | 26% |
| LMCA | — | 52.7% |
| Surface Evolver Bench | — | 95% |
| Epoch Capabilities Index | — | 157.68 |
| ForecastBench | — | 61.1 |

## Math

- Gemini 1.5 Flash 8B: 13.3 (#296)
- Kimi K3: 74.0 (#13)

| Benchmark | Gemini 1.5 Flash 8B | Kimi K3 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 4.6% | 97.2% |
| LMArena Math | 1207 | 1493 |
| FrontierMath (Tiers 1-3) | — | 72.2% |
| FrontierMath Tier 4 | — | 39% |
| MathArena Final-Answer Competitions | — | 87.8% |
| ProofBench | — | 87% |

## Knowledge

- Gemini 1.5 Flash 8B: 16.0 (#285)
- Kimi K3: 63.2 (#19)

| Benchmark | Gemini 1.5 Flash 8B | Kimi K3 |
|---|---|---|
| GPQA Diamond | 33% | 93.1% |
| LMArena Expert | 1185 | 1520 |
| SimpleQA Verified | — | 50.6% |

## Multimodal

- Gemini 1.5 Flash 8B: 27.6 (#110)
- Kimi K3: 38.4 (#58)

| Benchmark | Gemini 1.5 Flash 8B | Kimi K3 |
|---|---|---|
| LMArena Vision | 1044 | — |
| Blueprint-Bench 2 | — | 29.5% |
| Furniture Assembly | — | 34.2% |

## Multilingual

- Gemini 1.5 Flash 8B: 38.6 (#224)
- Kimi K3: 56.5 (#20)

| Benchmark | Gemini 1.5 Flash 8B | Kimi K3 |
|---|---|---|
| LMArena Non-English | 1215 | 1466 |
| LMArena Chinese | 1231 | 1528 |
| LMArena French | 1233 | 1488 |
| LMArena German | 1206 | 1474 |
| LMArena Japanese | 1150 | 1492 |
| LMArena Korean | 1140 | 1465 |
| LMArena Russian | 1236 | 1481 |
| LMArena Spanish | 1212 | 1478 |

## Instruction Following

- Gemini 1.5 Flash 8B: 63.1 (#231)
- Kimi K3: 77.8 (#13)

| Benchmark | Gemini 1.5 Flash 8B | Kimi K3 |
|---|---|---|
| LMArena Instruction Following | 1199 | 1481 |

## Long Context

- Gemini 1.5 Flash 8B: 36.9 (#220)
- Kimi K3: 45.8 (#27)

| Benchmark | Gemini 1.5 Flash 8B | Kimi K3 |
|---|---|---|
| LMArena Longer Query | 1219 | 1494 |

## Writing & Preference

- Gemini 1.5 Flash 8B: 43.0 (#227)
- Kimi K3: 76.7 (#4)

| Benchmark | Gemini 1.5 Flash 8B | Kimi K3 |
|---|---|---|
| LMArena Text | 1226 | 1476 |
| LMArena Creative Writing | 1218 | 1452 |
| LMArena Multi-Turn | 1185 | 1488 |
| EQ-Bench Creative Writing | — | 2082 |
| EQ-Bench 4 | — | 1339 |

## FAQ

### Is Gemini 1.5 Flash 8B better than Kimi K3?

Kimi K3 is the stronger model overall, scoring 59.5 to 29.7 on the Noometry Index.

### Is Gemini 1.5 Flash 8B or Kimi K3 better for coding?

Kimi K3 scores higher on coding benchmarks: 60.6 versus 34.9 in the Noometry coding category.

### How many benchmarks do Gemini 1.5 Flash 8B and Kimi K3 share?

20 benchmarks have published results for both models. Gemini 1.5 Flash 8B has 21 scored results on Noometry and Kimi K3 has 53.