# Kimi K2.5 Instant vs Qwen3 8B

> Kimi K2.5 Instant is the stronger model overall, scoring 43.6 to 33.7 on the Noometry Index.

- Canonical page: https://noometry.com/compare/kimi-k2-5-instant-vs-qwen3-8b
- Last updated: 2026-10-12
- Shared benchmarks: 0

## Summary

- The widest gap is in reasoning, where Kimi K2.5 Instant leads 29.7 to 16.6.

## Snapshot

| | Kimi K2.5 Instant | Qwen3 8B |
|---|---|---|
| Provider | Moonshot AI | Alibaba (Qwen) |
| Noometry Index | 43.6 | 33.7 |
| Rank | 89 | 238 |
| Context | — | 131K |
| Input $/M | — | $0.18 |
| Output $/M | — | $0.70 |
| Weights | Open | Open |

## Coding

- Kimi K2.5 Instant: 42.6 (#97)
- Qwen3 8B: 34.0 (#248)

| Benchmark | Kimi K2.5 Instant | Qwen3 8B |
|---|---|---|
| LMArena WebDev | 1404 | — |
| SciCode | — | 22.6% |
| LMArena Coding | 1484 | — |

## Agentic & Tool Use

- Kimi K2.5 Instant: —
- Qwen3 8B: 30.2 (#78)

| Benchmark | Kimi K2.5 Instant | Qwen3 8B |
|---|---|---|
| Berkeley Function Calling Leaderboard | — | 42.6% |

## Reasoning

- Kimi K2.5 Instant: 29.7 (#90)
- Qwen3 8B: 16.6 (#303)

| Benchmark | Kimi K2.5 Instant | Qwen3 8B |
|---|---|---|
| CritPt | — | 0% |
| Chess Puzzles | — | 5% |
| LMArena Hard Prompts | 1443 | — |
| DTBench | — | 59.7% |
| LMCA | — | 8.8% |
| Epoch Capabilities Index | — | 136.17 |

## Math

- Kimi K2.5 Instant: 39.4 (#105)
- Qwen3 8B: 34.9 (#191)

| Benchmark | Kimi K2.5 Instant | Qwen3 8B |
|---|---|---|
| OTIS Mock AIME 2024-2025 | — | 56.1% |
| LMArena Math | 1442 | — |

## Knowledge

- Kimi K2.5 Instant: 40.2 (#123)
- Qwen3 8B: 36.1 (#173)

| Benchmark | Kimi K2.5 Instant | Qwen3 8B |
|---|---|---|
| GPQA Diamond | — | 56.8% |
| Vectara Hallucination Rate | — | 4.8% |
| LMArena Expert | 1440 | — |

## Multimodal

- Kimi K2.5 Instant: 40.2 (#50)
- Qwen3 8B: —

| Benchmark | Kimi K2.5 Instant | Qwen3 8B |
|---|---|---|
| LMArena Vision | 1254 | — |

## Multilingual

- Kimi K2.5 Instant: 52.0 (#94)
- Qwen3 8B: —

| Benchmark | Kimi K2.5 Instant | Qwen3 8B |
|---|---|---|
| LMArena Non-English | 1406 | — |
| LMArena Chinese | 1449 | — |
| LMArena French | 1403 | — |
| LMArena German | 1413 | — |
| LMArena Korean | 1378 | — |
| LMArena Russian | 1404 | — |
| LMArena Spanish | 1447 | — |

## Instruction Following

- Kimi K2.5 Instant: 75.3 (#65)
- Qwen3 8B: —

| Benchmark | Kimi K2.5 Instant | Qwen3 8B |
|---|---|---|
| LMArena Instruction Following | 1430 | — |

## Long Context

- Kimi K2.5 Instant: 43.9 (#83)
- Qwen3 8B: 37.9 (#210)

| Benchmark | Kimi K2.5 Instant | Qwen3 8B |
|---|---|---|
| Fiction.LiveBench | — | 62.1% |
| LMArena Longer Query | 1435 | — |

## Writing & Preference

- Kimi K2.5 Instant: 60.6 (#95)
- Qwen3 8B: —

| Benchmark | Kimi K2.5 Instant | Qwen3 8B |
|---|---|---|
| LMArena Text | 1420 | — |
| LMArena Creative Writing | 1381 | — |
| LMArena Multi-Turn | 1427 | — |

## FAQ

### Is Kimi K2.5 Instant better than Qwen3 8B?

Kimi K2.5 Instant is the stronger model overall, scoring 43.6 to 33.7 on the Noometry Index.

### Is Kimi K2.5 Instant or Qwen3 8B better for coding?

Kimi K2.5 Instant scores higher on coding benchmarks: 42.6 versus 34.0 in the Noometry coding category.

### How many benchmarks do Kimi K2.5 Instant and Qwen3 8B share?

0 benchmarks have published results for both models. Kimi K2.5 Instant has 18 scored results on Noometry and Qwen3 8B has 11.