Model comparison
Kimi K2.5 Instant vs Mistral Medium 3.5
Kimi K2.5 Instant is the stronger model overall, scoring 43.6 to 40.2 on the Noometry Index.
Last verified . 18 shared benchmarks.
Mistral AISummary
- They share 18 benchmarks with published results for both. Kimi K2.5 Instant scores higher in 9 categories and Mistral Medium 3.5 in 0 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Kimi K2.5 Instant leads 29.7 to 17.3.
Side by side
| Kimi K2.5 Instant | Mistral Medium 3.5 | |
|---|---|---|
| Provider | Moonshot AI | Mistral AI |
| Noometry Index | 43.6 | 40.2 |
| Released | — | — |
| Weights | Open | Open |
| Context window | — | 262K |
| Max output | — | 210K |
| Input $ / M tokens | — | $1.50 |
| Output $ / M tokens | — | $7.50 |
| Results tracked | 18 | 22 |
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Category by category
Coding Kimi K2.5 Instant leads
Kimi K2.5 Instant: 42.6 (#97), Mistral Medium 3.5: 36.0 (#213)
| Benchmark | Kimi K2.5 Instant | Mistral Medium 3.5 |
|---|---|---|
| LMArena WebDev | 1404 | 1264 |
| LMArena Coding | 1484 | 1461 |
Reasoning Kimi K2.5 Instant leads
Kimi K2.5 Instant: 29.7 (#90), Mistral Medium 3.5: 17.3 (#295)
| Benchmark | Kimi K2.5 Instant | Mistral Medium 3.5 |
|---|---|---|
| LMArena Hard Prompts | 1443 | 1436 |
| Kagi LLM Benchmark | — | 41.4% |
| NYT Connections (extended) | — | 12.9% |
| Epoch Capabilities Index | — | 141.35 |
Math Too close to call
Kimi K2.5 Instant: 39.4 (#105), Mistral Medium 3.5: 39.1 (#113)
| Benchmark | Kimi K2.5 Instant | Mistral Medium 3.5 |
|---|---|---|
| LMArena Math | 1442 | 1431 |
Knowledge Too close to call
Kimi K2.5 Instant: 40.2 (#123), Mistral Medium 3.5: 40.0 (#126)
| Benchmark | Kimi K2.5 Instant | Mistral Medium 3.5 |
|---|---|---|
| LMArena Expert | 1440 | 1432 |
Multimodal Kimi K2.5 Instant leads
Kimi K2.5 Instant: 40.2 (#50), Mistral Medium 3.5: 38.3 (#65)
| Benchmark | Kimi K2.5 Instant | Mistral Medium 3.5 |
|---|---|---|
| LMArena Vision | 1254 | 1223 |
Multilingual Too close to call
Kimi K2.5 Instant: 52.0 (#94), Mistral Medium 3.5: 51.9 (#100)
| Benchmark | Kimi K2.5 Instant | Mistral Medium 3.5 |
|---|---|---|
| LMArena Non-English | 1406 | 1404 |
| LMArena Chinese | 1449 | 1442 |
| LMArena French | 1403 | 1448 |
| LMArena German | 1413 | 1451 |
| LMArena Korean | 1378 | 1385 |
| LMArena Russian | 1404 | 1395 |
| LMArena Spanish | 1447 | 1409 |
Instruction Following Too close to call
Kimi K2.5 Instant: 75.3 (#65), Mistral Medium 3.5: 74.6 (#90)
| Benchmark | Kimi K2.5 Instant | Mistral Medium 3.5 |
|---|---|---|
| LMArena Instruction Following | 1430 | 1415 |
Long Context Too close to call
Kimi K2.5 Instant: 43.9 (#83), Mistral Medium 3.5: 43.2 (#103)
| Benchmark | Kimi K2.5 Instant | Mistral Medium 3.5 |
|---|---|---|
| LMArena Longer Query | 1435 | 1415 |
Writing & Preference Kimi K2.5 Instant leads
Kimi K2.5 Instant: 60.6 (#95), Mistral Medium 3.5: 58.5 (#117)
| Benchmark | Kimi K2.5 Instant | Mistral Medium 3.5 |
|---|---|---|
| LMArena Text | 1420 | 1421 |
| LMArena Creative Writing | 1381 | 1374 |
| LMArena Multi-Turn | 1427 | 1423 |
| EQ-Bench 4 | — | 993 |
Frequently asked questions
Is Kimi K2.5 Instant better than Mistral Medium 3.5?
Kimi K2.5 Instant is the stronger model overall, scoring 43.6 to 40.2 on the Noometry Index.
Is Kimi K2.5 Instant or Mistral Medium 3.5 better for coding?
Kimi K2.5 Instant scores higher on coding benchmarks: 42.6 versus 36.0 in the Noometry coding category.
How many benchmarks do Kimi K2.5 Instant and Mistral Medium 3.5 share?
18 benchmarks have published results for both models. Kimi K2.5 Instant has 18 scored results on Noometry and Mistral Medium 3.5 has 22.