# Claude Sonnet 5 vs Kimi K2.7 Code

> Claude Sonnet 5 is the stronger model overall, scoring 54.6 to 43.3 on the Noometry Index. Kimi K2.7 Code costs 2.3× less per token, which makes it the better buy when Claude Sonnet 5's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/claude-sonnet-5-vs-kimi-k2-7-code
- Last updated: 2026-10-10
- Shared benchmarks: 19

## Summary

- They share 19 benchmarks with published results for both. Claude Sonnet 5 scores higher in 5 categories and Kimi K2.7 Code in 0 categories; 5 gaps are clear of the uncertainty.
- The widest gap is in agentic & tool use, where Claude Sonnet 5 leads 42.8 to 24.0.
- The biggest single-benchmark swing is GBAEval: 65.3% for Claude Sonnet 5 and 0.9% for Kimi K2.7 Code.
- Kimi K2.7 Code is cheaper at $0.95 / $4 per million input/output tokens, against $2 / $10 for Claude Sonnet 5.
- Claude Sonnet 5 accepts more context: 1M tokens versus 262K.
- Kimi K2.7 Code has downloadable open weights; the other is API-only.

## Snapshot

| | Claude Sonnet 5 | Kimi K2.7 Code |
|---|---|---|
| Provider | Anthropic | Moonshot AI |
| Noometry Index | 54.6 | 43.3 |
| Rank | 29 | 94 |
| Context | 1M | 262K |
| Input $/M | $2 | $0.95 |
| Output $/M | $10 | $4 |
| Weights | Proprietary | Open |

## Coding

- Claude Sonnet 5: 55.5 (#26)
- Kimi K2.7 Code: 42.9 (#95)

| Benchmark | Claude Sonnet 5 | Kimi K2.7 Code |
|---|---|---|
| DeepSWE | 53.8% | 30.5% |
| FrontierCode | 42.7% | 30.1% |
| LMArena WebDev | 1541 | 1473 |
| SciCode | 54.3% | 47.5% |
| WeirdML | 68.8% | 54.1% |
| ALE-Bench | 1,463 | 886.23 |
| CursorBench | 34.1% | — |
| GSO | 37.3% | — |
| LMArena Coding | 1483 | — |

## Agentic & Tool Use

- Claude Sonnet 5: 42.8 (#18)
- Kimi K2.7 Code: 24.0 (#122)

| Benchmark | Claude Sonnet 5 | Kimi K2.7 Code |
|---|---|---|
| APEX-Agents | 54.5% | 37.6% |
| GBAEval | 65.3% | 0.9% |
| Vending-Bench 2 | 6,378 | 5,083 |
| LMArena Search | 1194 | — |

## Reasoning

- Claude Sonnet 5: 49.1 (#39)
- Kimi K2.7 Code: 39.0 (#61)

| Benchmark | Claude Sonnet 5 | Kimi K2.7 Code |
|---|---|---|
| SimpleBench | 60.6% | 57.9% |
| CritPt | 16.9% | 10% |
| Chess Puzzles | 35% | 21% |
| Surface Evolver Bench | 60% | 48.8% |
| Epoch Capabilities Index | 156.21 | 149.97 |
| NYT Connections (extended) | 75.1% | — |
| LMArena Hard Prompts | 1461 | — |
| Mystery Game Puzzles | 35% | — |
| DTBench | 92.5% | — |
| LMCA | 50% | — |
| Bench to the Future 3 | 0.14 | — |
| ForecastBench | 61.1 | — |

## Math

- Claude Sonnet 5: 66.2 (#27)
- Kimi K2.7 Code: 52.9 (#48)

| Benchmark | Claude Sonnet 5 | Kimi K2.7 Code |
|---|---|---|
| FrontierMath (Tiers 1-3) | 65.6% | 54% |
| FrontierMath Tier 4 | 29.3% | 12.2% |
| OTIS Mock AIME 2024-2025 | 94.7% | 95.6% |
| ProofBench | 77% | — |
| LMArena Math | 1467 | — |

## Knowledge

- Claude Sonnet 5: 55.6 (#47)
- Kimi K2.7 Code: 53.5 (#57)

| Benchmark | Claude Sonnet 5 | Kimi K2.7 Code |
|---|---|---|
| GPQA Diamond | 90.5% | 87.9% |
| SimpleQA Verified | 33.7% | 36.5% |
| LMArena Expert | 1490 | — |

## Multimodal

- Claude Sonnet 5: 42.4 (#31)
- Kimi K2.7 Code: —

| Benchmark | Claude Sonnet 5 | Kimi K2.7 Code |
|---|---|---|
| LMArena Vision | 1274 | — |
| Blueprint-Bench 2 | 24.9% | — |
| LMArena Document | 1466 | — |

## Multilingual

- Claude Sonnet 5: 53.8 (#55)
- Kimi K2.7 Code: —

| Benchmark | Claude Sonnet 5 | Kimi K2.7 Code |
|---|---|---|
| LMArena Non-English | 1431 | — |
| LMArena Chinese | 1477 | — |
| LMArena French | 1460 | — |
| LMArena German | 1440 | — |
| LMArena Japanese | 1422 | — |
| LMArena Korean | 1411 | — |
| LMArena Russian | 1451 | — |
| LMArena Spanish | 1437 | — |

## Instruction Following

- Claude Sonnet 5: 76.3 (#41)
- Kimi K2.7 Code: —

| Benchmark | Claude Sonnet 5 | Kimi K2.7 Code |
|---|---|---|
| LMArena Instruction Following | 1452 | — |

## Long Context

- Claude Sonnet 5: 44.8 (#55)
- Kimi K2.7 Code: —

| Benchmark | Claude Sonnet 5 | Kimi K2.7 Code |
|---|---|---|
| LMArena Longer Query | 1463 | — |

## Writing & Preference

- Claude Sonnet 5: 69.2 (#25)
- Kimi K2.7 Code: —

| Benchmark | Claude Sonnet 5 | Kimi K2.7 Code |
|---|---|---|
| LMArena Text | 1442 | — |
| LMArena Creative Writing | 1416 | — |
| EQ-Bench Creative Writing | 1794 | — |
| EQ-Bench 4 | 1236 | — |
| LMArena Multi-Turn | 1454 | — |

## FAQ

### Is Claude Sonnet 5 better than Kimi K2.7 Code?

Claude Sonnet 5 is the stronger model overall, scoring 54.6 to 43.3 on the Noometry Index. Kimi K2.7 Code costs 2.3× less per token, which makes it the better buy when Claude Sonnet 5's lead doesn't matter for your workload.

### Which is cheaper, Claude Sonnet 5 or Kimi K2.7 Code?

Kimi K2.7 Code is cheaper. It lists at $0.95 per million input tokens and $4 per million output tokens; Claude Sonnet 5 lists at $2 and $10.

### Is Claude Sonnet 5 or Kimi K2.7 Code better for coding?

Claude Sonnet 5 scores higher on coding benchmarks: 55.5 versus 42.9 in the Noometry coding category.

### Which has the bigger context window?

Claude Sonnet 5 does, with 1M tokens against 262K.

### How many benchmarks do Claude Sonnet 5 and Kimi K2.7 Code share?

19 benchmarks have published results for both models. Claude Sonnet 5 has 51 scored results on Noometry and Kimi K2.7 Code has 19.