# Granite 4.2 8B vs Kimi K3

> Kimi K3 is the stronger model overall, scoring 59.5 to 40.0 on the Noometry Index. Granite 4.2 8B costs 56× less per token, which makes it the better buy when Kimi K3's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/granite-4-2-8b-vs-kimi-k3
- Last updated: 2026-10-10
- Shared benchmarks: 11

## Summary

- They share 11 benchmarks with published results for both. Granite 4.2 8B scores higher in 0 categories and Kimi K3 in 7 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Kimi K3 leads 63.0 to 25.5.
- Granite 4.2 8B is cheaper at $0.06 / $0.25 per million input/output tokens, against $3 / $15 for Kimi K3.
- Kimi K3 accepts more context: 1.05M tokens versus 131K.

## Snapshot

| | Granite 4.2 8B | Kimi K3 |
|---|---|---|
| Provider | IBM | Moonshot AI |
| Noometry Index | 40.0 | 59.5 |
| Rank | 143 | 12 |
| Context | 131K | 1.05M |
| Input $/M | $0.06 | $3 |
| Output $/M | $0.25 | $15 |
| Weights | Open | Open |

## Coding

- Granite 4.2 8B: 39.9 (#138)
- Kimi K3: 60.6 (#8)

| Benchmark | Granite 4.2 8B | Kimi K3 |
|---|---|---|
| LMArena Coding | 1379 | 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

- Granite 4.2 8B: —
- Kimi K3: 41.8 (#19)

| Benchmark | Granite 4.2 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

- Granite 4.2 8B: 25.5 (#130)
- Kimi K3: 63.0 (#15)

| Benchmark | Granite 4.2 8B | Kimi K3 |
|---|---|---|
| LMArena Hard Prompts | 1327 | 1495 |
| 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% |
| DTBench | — | 91.2% |
| LMCA | — | 52.7% |
| Surface Evolver Bench | — | 95% |
| Epoch Capabilities Index | — | 157.68 |
| ForecastBench | — | 61.1 |

## Math

- Granite 4.2 8B: —
- Kimi K3: 74.0 (#13)

| Benchmark | Granite 4.2 8B | Kimi K3 |
|---|---|---|
| FrontierMath (Tiers 1-3) | — | 72.2% |
| FrontierMath Tier 4 | — | 39% |
| MathArena Final-Answer Competitions | — | 87.8% |
| OTIS Mock AIME 2024-2025 | — | 97.2% |
| ProofBench | — | 87% |
| LMArena Math | — | 1493 |

## Knowledge

- Granite 4.2 8B: 37.7 (#144)
- Kimi K3: 63.2 (#19)

| Benchmark | Granite 4.2 8B | Kimi K3 |
|---|---|---|
| LMArena Expert | 1380 | 1520 |
| GPQA Diamond | — | 93.1% |
| SimpleQA Verified | — | 50.6% |

## Multimodal

- Granite 4.2 8B: —
- Kimi K3: 38.4 (#58)

| Benchmark | Granite 4.2 8B | Kimi K3 |
|---|---|---|
| Blueprint-Bench 2 | — | 29.5% |
| Furniture Assembly | — | 34.2% |

## Multilingual

- Granite 4.2 8B: 44.5 (#173)
- Kimi K3: 56.5 (#20)

| Benchmark | Granite 4.2 8B | Kimi K3 |
|---|---|---|
| LMArena Non-English | 1299 | 1466 |
| LMArena Chinese | 1361 | 1528 |
| LMArena Russian | 1283 | 1481 |
| LMArena French | — | 1488 |
| LMArena German | — | 1474 |
| LMArena Japanese | — | 1492 |
| LMArena Korean | — | 1465 |
| LMArena Spanish | — | 1478 |

## Instruction Following

- Granite 4.2 8B: 68.7 (#183)
- Kimi K3: 77.8 (#13)

| Benchmark | Granite 4.2 8B | Kimi K3 |
|---|---|---|
| LMArena Instruction Following | 1298 | 1481 |

## Long Context

- Granite 4.2 8B: 40.2 (#154)
- Kimi K3: 45.8 (#27)

| Benchmark | Granite 4.2 8B | Kimi K3 |
|---|---|---|
| LMArena Longer Query | 1323 | 1494 |

## Writing & Preference

- Granite 4.2 8B: 49.8 (#183)
- Kimi K3: 76.7 (#4)

| Benchmark | Granite 4.2 8B | Kimi K3 |
|---|---|---|
| LMArena Text | 1319 | 1476 |
| LMArena Creative Writing | 1238 | 1452 |
| LMArena Multi-Turn | 1299 | 1488 |
| EQ-Bench Creative Writing | — | 2082 |
| EQ-Bench 4 | — | 1339 |

## FAQ

### Is Granite 4.2 8B better than Kimi K3?

Kimi K3 is the stronger model overall, scoring 59.5 to 40.0 on the Noometry Index. Granite 4.2 8B costs 56× less per token, which makes it the better buy when Kimi K3's lead doesn't matter for your workload.

### Which is cheaper, Granite 4.2 8B or Kimi K3?

Granite 4.2 8B is cheaper. It lists at $0.06 per million input tokens and $0.25 per million output tokens; Kimi K3 lists at $3 and $15.

### Is Granite 4.2 8B or Kimi K3 better for coding?

Kimi K3 scores higher on coding benchmarks: 60.6 versus 39.9 in the Noometry coding category.

### Which has the bigger context window?

Kimi K3 does, with 1.05M tokens against 131K.

### How many benchmarks do Granite 4.2 8B and Kimi K3 share?

11 benchmarks have published results for both models. Granite 4.2 8B has 11 scored results on Noometry and Kimi K3 has 53.