Model comparison
Claude 3 Sonnet vs Kimi K2.5 Instant
Kimi K2.5 Instant is the stronger model overall, scoring 42.9 to 28.8 on the Noometry Index.
Last verified . 17 shared benchmarks.
Summary
- They share 17 benchmarks with published results for both. Claude 3 Sonnet scores higher in 0 categories and Kimi K2.5 Instant in 9 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in math, where Kimi K2.5 Instant leads 36.6 to 10.0.
- Kimi K2.5 Instant has downloadable open weights; the other is API-only.
Side by side
| Claude 3 Sonnet | Kimi K2.5 Instant | |
|---|---|---|
| Provider | Anthropic | Moonshot AI |
| Noometry Index | 28.8 | 42.9 |
| Released | 2024-02-29 | — |
| Weights | Proprietary | Open |
| Context window | — | — |
| Max output | — | — |
| Input $ / M tokens | — | — |
| Output $ / M tokens | — | — |
| Results tracked | 30 | 18 |
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Category by category
Coding Kimi K2.5 Instant leads
Claude 3 Sonnet: 29.2 (#296), Kimi K2.5 Instant: 42.3 (#95)
| Benchmark | Claude 3 Sonnet | Kimi K2.5 Instant |
|---|---|---|
| LMArena Coding | 1223 | 1483 |
| LMArena WebDev | — | 1404 |
| WeirdML | 10.2% | — |
| BigCodeBench Instruct | 42.7% | — |
| BigCodeBench Complete | 53.8% | — |
| HumanEval+ | 64% | — |
| MBPP+ | 69.3% | — |
Reasoning Kimi K2.5 Instant leads
Claude 3 Sonnet: 19.7 (#232), Kimi K2.5 Instant: 28.5 (#88)
| Benchmark | Claude 3 Sonnet | Kimi K2.5 Instant |
|---|---|---|
| LMArena Hard Prompts | 1197 | 1443 |
| DTBench | 53.6% | — |
| Epoch Capabilities Index | 120.69 | — |
| WinoGrande | 75.1% | — |
Math Kimi K2.5 Instant leads
Claude 3 Sonnet: 10.0 (#305), Kimi K2.5 Instant: 36.6 (#105)
| Benchmark | Claude 3 Sonnet | Kimi K2.5 Instant |
|---|---|---|
| LMArena Math | 1213 | 1443 |
| OTIS Mock AIME 2024-2025 | 2.5% | — |
| MATH Level 5 | 18.2% | — |
Knowledge Kimi K2.5 Instant leads
Claude 3 Sonnet: 21.1 (#271), Kimi K2.5 Instant: 39.5 (#121)
| Benchmark | Claude 3 Sonnet | Kimi K2.5 Instant |
|---|---|---|
| LMArena Expert | 1173 | 1438 |
| GPQA Diamond | 40.6% | — |
| MMLU | 75.9% | — |
Multimodal Kimi K2.5 Instant leads
Claude 3 Sonnet: 24.7 (#120), Kimi K2.5 Instant: 39.5 (#47)
| Benchmark | Claude 3 Sonnet | Kimi K2.5 Instant |
|---|---|---|
| LMArena Vision | 984 | 1254 |
Multilingual Kimi K2.5 Instant leads
Claude 3 Sonnet: 38.0 (#229), Kimi K2.5 Instant: 52.2 (#89)
| Benchmark | Claude 3 Sonnet | Kimi K2.5 Instant |
|---|---|---|
| LMArena Non-English | 1205 | 1406 |
| LMArena Chinese | 1188 | 1450 |
| LMArena French | 1228 | 1403 |
| LMArena German | 1204 | 1413 |
| LMArena Korean | 1128 | 1378 |
| LMArena Russian | 1227 | 1404 |
| LMArena Spanish | 1204 | 1448 |
| LMArena Japanese | 1131 | — |
Instruction Following Kimi K2.5 Instant leads
Claude 3 Sonnet: 63.1 (#230), Kimi K2.5 Instant: 75.5 (#61)
| Benchmark | Claude 3 Sonnet | Kimi K2.5 Instant |
|---|---|---|
| LMArena Instruction Following | 1200 | 1430 |
Long Context Kimi K2.5 Instant leads
Claude 3 Sonnet: 36.7 (#223), Kimi K2.5 Instant: 43.8 (#82)
| Benchmark | Claude 3 Sonnet | Kimi K2.5 Instant |
|---|---|---|
| LMArena Longer Query | 1211 | 1435 |
Writing & Preference Kimi K2.5 Instant leads
Claude 3 Sonnet: 42.3 (#233), Kimi K2.5 Instant: 60.8 (#91)
| Benchmark | Claude 3 Sonnet | Kimi K2.5 Instant |
|---|---|---|
| LMArena Text | 1218 | 1420 |
| LMArena Creative Writing | 1186 | 1379 |
| LMArena Multi-Turn | 1227 | 1427 |
Frequently asked questions
Is Claude 3 Sonnet better than Kimi K2.5 Instant?
Kimi K2.5 Instant is the stronger model overall, scoring 42.9 to 28.8 on the Noometry Index.
Is Claude 3 Sonnet or Kimi K2.5 Instant better for coding?
Kimi K2.5 Instant scores higher on coding benchmarks: 42.3 versus 29.2 in the Noometry coding category.
How many benchmarks do Claude 3 Sonnet and Kimi K2.5 Instant share?
17 benchmarks have published results for both models. Claude 3 Sonnet has 30 scored results on Noometry and Kimi K2.5 Instant has 18.