# Kimi K2.7 Code vs o3-mini

> Kimi K2.7 Code is the stronger model overall, scoring 43.3 to 36.7 on the Noometry Index.

- Canonical page: https://noometry.com/compare/kimi-k2-7-code-vs-o3-mini
- Last updated: 2026-10-11
- Shared benchmarks: 11

## Summary

- They share 11 benchmarks with published results for both. Kimi K2.7 Code scores higher in 4 categories and o3-mini in 1 category; 5 gaps are clear of the uncertainty.
- The widest gap is in math, where Kimi K2.7 Code leads 52.9 to 28.1.
- The biggest single-benchmark swing is FrontierMath (Tiers 1-3): 54% for Kimi K2.7 Code and 18.6% for o3-mini.
- Kimi K2.7 Code is cheaper at $0.95 / $4 per million input/output tokens, against $1.10 / $4.40 for o3-mini.
- Kimi K2.7 Code accepts more context: 262K tokens versus 200K.
- Kimi K2.7 Code has downloadable open weights; the other is API-only.

## Snapshot

| | Kimi K2.7 Code | o3-mini |
|---|---|---|
| Provider | Moonshot AI | OpenAI |
| Noometry Index | 43.3 | 36.7 |
| Rank | 94 | 212 |
| Context | 262K | 200K |
| Input $/M | $0.95 | $1.10 |
| Output $/M | $4 | $4.40 |
| Weights | Open | Proprietary |

## Coding

- Kimi K2.7 Code: 42.9 (#95)
- o3-mini: 40.8 (#132)

| Benchmark | Kimi K2.7 Code | o3-mini |
|---|---|---|
| SciCode | 47.5% | 39.8% |
| WeirdML | 54.1% | 43.7% |
| DeepSWE | 30.5% | — |
| FrontierCode | 30.1% | — |
| Aider Polyglot | — | 60.4% |
| LMArena WebDev | 1473 | — |
| GSO | — | 1.3% |
| LiveBench Coding | — | 82.7% |
| LMArena Coding | — | 1378 |
| CadEval | — | 54% |
| ALE-Bench | 886.23 | — |

## Agentic & Tool Use

- Kimi K2.7 Code: 24.0 (#122)
- o3-mini: 29.6 (#84)

| Benchmark | Kimi K2.7 Code | o3-mini |
|---|---|---|
| APEX-Agents | 37.6% | — |
| Cybench | — | 22.5% |
| GBAEval | 0.9% | — |
| Vending-Bench 2 | 5,083 | — |

## Reasoning

- Kimi K2.7 Code: 39.0 (#61)
- o3-mini: 16.3 (#305)

| Benchmark | Kimi K2.7 Code | o3-mini |
|---|---|---|
| SimpleBench | 57.9% | 22.8% |
| CritPt | 10% | 0.3% |
| Chess Puzzles | 21% | 17% |
| Epoch Capabilities Index | 149.97 | 140.34 |
| ARC-AGI-2 | — | 3% |
| ARC-AGI-1 | — | 34.5% |
| LiveBench Reasoning | — | 89.6% |
| LMArena Hard Prompts | — | 1366 |
| Mystery Game Puzzles | — | 7% |
| DTBench | — | 68.8% |
| LiveBench Data Analysis | — | 70.6% |
| LMCA | — | 19% |
| Surface Evolver Bench | 48.8% | — |
| ForecastBench | — | 59.6 |
| LiveBench | — | 75.9% |

## Math

- Kimi K2.7 Code: 52.9 (#48)
- o3-mini: 28.1 (#244)

| Benchmark | Kimi K2.7 Code | o3-mini |
|---|---|---|
| FrontierMath (Tiers 1-3) | 54% | 18.6% |
| FrontierMath Tier 4 | 12.2% | 0% |
| OTIS Mock AIME 2024-2025 | 95.6% | 76.9% |
| LiveBench Math | — | 77.3% |
| LMArena Math | — | 1396 |
| MATH Level 5 | — | 96.5% |
| FrontierMath (Feb 2025 set) | — | 12.4% |
| FrontierMath Tier 4 (v1) | — | 4.2% |

## Knowledge

- Kimi K2.7 Code: 53.5 (#57)
- o3-mini: 38.3 (#146)

| Benchmark | Kimi K2.7 Code | o3-mini |
|---|---|---|
| GPQA Diamond | 87.9% | 77% |
| SimpleQA Verified | 36.5% | 15.3% |
| Confabulations | — | 17.9% |
| LMArena Expert | — | 1364 |

## Multilingual

- Kimi K2.7 Code: —
- o3-mini: 45.7 (#164)

| Benchmark | Kimi K2.7 Code | o3-mini |
|---|---|---|
| LMArena Non-English | — | 1319 |
| LMArena Chinese | — | 1379 |
| LMArena French | — | 1334 |
| LMArena German | — | 1303 |
| LMArena Japanese | — | 1286 |
| LMArena Korean | — | 1314 |
| LMArena Russian | — | 1304 |
| LMArena Spanish | — | 1321 |

## Instruction Following

- Kimi K2.7 Code: —
- o3-mini: 75.1 (#72)

| Benchmark | Kimi K2.7 Code | o3-mini |
|---|---|---|
| LiveBench Instruction Following | — | 84.4% |
| LMArena Instruction Following | — | 1337 |

## Long Context

- Kimi K2.7 Code: —
- o3-mini: 33.8 (#256)

| Benchmark | Kimi K2.7 Code | o3-mini |
|---|---|---|
| Fiction.LiveBench | — | 50% |
| LMArena Longer Query | — | 1343 |

## Writing & Preference

- Kimi K2.7 Code: —
- o3-mini: 50.3 (#182)

| Benchmark | Kimi K2.7 Code | o3-mini |
|---|---|---|
| LMArena Text | — | 1337 |
| LMArena Creative Writing | — | 1286 |
| Short-Story Creative Writing | — | 61.7% |
| LMArena Multi-Turn | — | 1320 |
| LiveBench Language | — | 50.7% |

## FAQ

### Is Kimi K2.7 Code better than o3-mini?

Kimi K2.7 Code is the stronger model overall, scoring 43.3 to 36.7 on the Noometry Index.

### Which is cheaper, Kimi K2.7 Code or o3-mini?

Kimi K2.7 Code is cheaper. It lists at $0.95 per million input tokens and $4 per million output tokens; o3-mini lists at $1.10 and $4.40.

### Is Kimi K2.7 Code or o3-mini better for coding?

Kimi K2.7 Code scores higher on coding benchmarks: 42.9 versus 40.8 in the Noometry coding category.

### Which has the bigger context window?

Kimi K2.7 Code does, with 262K tokens against 200K.

### How many benchmarks do Kimi K2.7 Code and o3-mini share?

11 benchmarks have published results for both models. Kimi K2.7 Code has 19 scored results on Noometry and o3-mini has 51.