Model comparison
Claude 3 Sonnet vs Kimi K2.6
Kimi K2.6 is the stronger model overall, scoring 47.7 to 29.0 on the Noometry Index.
Last verified . 23 shared benchmarks.
Summary
- They share 23 benchmarks with published results for both. Claude 3 Sonnet scores higher in 0 categories and Kimi K2.6 in 9 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in math, where Kimi K2.6 leads 57.0 to 10.7.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 2.5% for Claude 3 Sonnet and 96.1% for Kimi K2.6.
- Kimi K2.6 has downloadable open weights; the other is API-only.
Side by side
| Claude 3 Sonnet | Kimi K2.6 | |
|---|---|---|
| Provider | Anthropic | Moonshot AI |
| Noometry Index | 29.0 | 47.7 |
| Released | 2024-02-29 | 2026-04-20 |
| Weights | Proprietary | Open |
| Context window | — | 262K |
| Max output | — | 262K |
| Input $ / M tokens | — | $0.95 |
| Output $ / M tokens | — | $4 |
| Results tracked | 30 | 51 |
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Category by category
Coding Kimi K2.6 leads
Claude 3 Sonnet: 29.6 (#302), Kimi K2.6: 50.7 (#43)
| Benchmark | Claude 3 Sonnet | Kimi K2.6 |
|---|---|---|
| WeirdML | 10.2% | 55.9% |
| LMArena Coding | 1223 | 1488 |
| SWE-bench Verified | — | 76.7% |
| LMArena WebDev | — | 1509 |
| SciCode | — | 53.5% |
| BigCodeBench Instruct | 42.7% | — |
| BigCodeBench Complete | 53.8% | — |
| ALE-Bench | — | 1,093 |
| HumanEval+ | 64% | — |
| MBPP+ | 69.3% | — |
Agentic & Tool Use Not comparable
Claude 3 Sonnet: —, Kimi K2.6: 21.9 (#137)
| Benchmark | Claude 3 Sonnet | Kimi K2.6 |
|---|---|---|
| OSWorld 2.0 | — | 4.6% |
| ExploitBench | — | 18.4% |
| GBAEval | — | 0.9% |
| GDP.pdf | — | 12% |
| Vending-Bench 2 | — | 6,205 |
Reasoning Kimi K2.6 leads
Claude 3 Sonnet: 20.5 (#237), Kimi K2.6: 40.5 (#55)
| Benchmark | Claude 3 Sonnet | Kimi K2.6 |
|---|---|---|
| LMArena Hard Prompts | 1197 | 1470 |
| DTBench | 53.6% | 90.9% |
| Epoch Capabilities Index | 120.7 | 151.05 |
| NYT Connections (extended) | — | 87.2% |
| CritPt | — | 8% |
| Chess Puzzles | — | 26% |
| EBR-Bench | — | 2.4% |
| Mystery Game Puzzles | — | 18% |
| LMCA | — | 37.3% |
| WinoGrande | 75.1% | — |
Math Kimi K2.6 leads
Claude 3 Sonnet: 10.7 (#310), Kimi K2.6: 57.0 (#41)
| Benchmark | Claude 3 Sonnet | Kimi K2.6 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 2.5% | 96.1% |
| LMArena Math | 1213 | 1475 |
| FrontierMath (Tiers 1-3) | — | 57.2% |
| FrontierMath Tier 4 | — | 25.6% |
| MathArena Final-Answer Competitions | — | 72.9% |
| ProofBench | — | 16% |
| MATH Level 5 | 18.2% | — |
| FrontierMath (Feb 2025 set) | — | 39% |
| FrontierMath Tier 4 (v1) | — | 14.6% |
Knowledge Kimi K2.6 leads
Claude 3 Sonnet: 21.1 (#276), Kimi K2.6: 54.0 (#54)
| Benchmark | Claude 3 Sonnet | Kimi K2.6 |
|---|---|---|
| GPQA Diamond | 40.6% | 90.8% |
| LMArena Expert | 1173 | 1491 |
| SimpleQA Verified | — | 34.9% |
| Vectara Hallucination Rate | — | 10.8% |
| MMLU | 75.9% | — |
Multimodal Kimi K2.6 leads
Claude 3 Sonnet: 25.2 (#125), Kimi K2.6: 31.6 (#103)
| Benchmark | Claude 3 Sonnet | Kimi K2.6 |
|---|---|---|
| LMArena Vision | 984 | 1283 |
| Blueprint-Bench 2 | — | 3.9% |
| Furniture Assembly | — | 21.7% |
| LMArena Document | — | 1451 |
Multilingual Kimi K2.6 leads
Claude 3 Sonnet: 37.8 (#234), Kimi K2.6: 54.9 (#37)
| Benchmark | Claude 3 Sonnet | Kimi K2.6 |
|---|---|---|
| LMArena Non-English | 1205 | 1446 |
| LMArena Chinese | 1189 | 1521 |
| LMArena French | 1229 | 1471 |
| LMArena German | 1204 | 1450 |
| LMArena Japanese | 1131 | 1443 |
| LMArena Korean | 1128 | 1427 |
| LMArena Russian | 1227 | 1446 |
| LMArena Spanish | 1204 | 1464 |
Instruction Following Kimi K2.6 leads
Claude 3 Sonnet: 62.8 (#235), Kimi K2.6: 76.3 (#43)
| Benchmark | Claude 3 Sonnet | Kimi K2.6 |
|---|---|---|
| LMArena Instruction Following | 1199 | 1451 |
Long Context Kimi K2.6 leads
Claude 3 Sonnet: 36.7 (#228), Kimi K2.6: 44.9 (#52)
| Benchmark | Claude 3 Sonnet | Kimi K2.6 |
|---|---|---|
| LMArena Longer Query | 1211 | 1468 |
Writing & Preference Kimi K2.6 leads
Claude 3 Sonnet: 42.1 (#238), Kimi K2.6: 68.5 (#26)
| Benchmark | Claude 3 Sonnet | Kimi K2.6 |
|---|---|---|
| LMArena Text | 1218 | 1455 |
| LMArena Creative Writing | 1186 | 1434 |
| LMArena Multi-Turn | 1227 | 1453 |
| EQ-Bench Creative Writing | — | 1725 |
| EQ-Bench 4 | — | 1202 |
Frequently asked questions
Is Claude 3 Sonnet better than Kimi K2.6?
Kimi K2.6 is the stronger model overall, scoring 47.7 to 29.0 on the Noometry Index.
Is Claude 3 Sonnet or Kimi K2.6 better for coding?
Kimi K2.6 scores higher on coding benchmarks: 50.7 versus 29.6 in the Noometry coding category.
How many benchmarks do Claude 3 Sonnet and Kimi K2.6 share?
23 benchmarks have published results for both models. Claude 3 Sonnet has 30 scored results on Noometry and Kimi K2.6 has 51.