Model comparison
Kimi K2.5 Instant vs Mistral Medium
Kimi K2.5 Instant is the stronger model overall, scoring 43.6 to 36.3 on the Noometry Index.
Last verified . 17 shared benchmarks.
Mistral AISummary
- They share 17 benchmarks with published results for both. Kimi K2.5 Instant scores higher in 8 categories and Mistral Medium in 1 category; 6 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Kimi K2.5 Instant leads 40.2 to 25.0.
Side by side
| Kimi K2.5 Instant | Mistral Medium | |
|---|---|---|
| Provider | Moonshot AI | Mistral AI |
| Noometry Index | 43.6 | 36.3 |
| Released | — | 2023-12-11 |
| Weights | Open | Open |
| Context window | — | 262K |
| Max output | — | 262K |
| Input $ / M tokens | — | $1.50 |
| Output $ / M tokens | — | $7.50 |
| Results tracked | 18 | 36 |
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Category by category
Coding Kimi K2.5 Instant leads
Kimi K2.5 Instant: 42.6 (#97), Mistral Medium: 34.2 (#243)
| Benchmark | Kimi K2.5 Instant | Mistral Medium |
|---|---|---|
| LMArena Coding | 1484 | 1434 |
| FrontierCode | — | 8% |
| LMArena WebDev | 1404 | — |
| SciCode | — | 40.2% |
| WeirdML | — | 43.7% |
| ALE-Bench | — | 763.98 |
Agentic & Tool Use Not comparable
Kimi K2.5 Instant: —, Mistral Medium: 28.3 (#90)
| Benchmark | Kimi K2.5 Instant | Mistral Medium |
|---|---|---|
| Berkeley Function Calling Leaderboard | — | 37.7% |
Reasoning Kimi K2.5 Instant leads
Kimi K2.5 Instant: 29.7 (#90), Mistral Medium: 24.0 (#167)
| Benchmark | Kimi K2.5 Instant | Mistral Medium |
|---|---|---|
| LMArena Hard Prompts | 1443 | 1426 |
| Kagi LLM Benchmark | — | 50% |
| CritPt | — | 0% |
| DTBench | — | 75.5% |
| LMCA | — | 26.1% |
| Surface Evolver Bench | — | 26.9% |
Math Kimi K2.5 Instant leads
Kimi K2.5 Instant: 39.4 (#105), Mistral Medium: 28.1 (#245)
| Benchmark | Kimi K2.5 Instant | Mistral Medium |
|---|---|---|
| LMArena Math | 1442 | 1408 |
| OTIS Mock AIME 2024-2025 | — | 32.2% |
| ProofBench | — | 9% |
| MATH Level 5 | — | 81.6% |
| FrontierMath (Feb 2025 set) | — | 0.3% |
Knowledge Kimi K2.5 Instant leads
Kimi K2.5 Instant: 40.2 (#123), Mistral Medium: 25.0 (#265)
| Benchmark | Kimi K2.5 Instant | Mistral Medium |
|---|---|---|
| LMArena Expert | 1440 | 1408 |
| GPQA Diamond | — | 59.5% |
| Humanity's Last Exam | — | 4.5% |
| Vectara Hallucination Rate | — | 22.7% |
Multimodal Kimi K2.5 Instant leads
Kimi K2.5 Instant: 40.2 (#50), Mistral Medium: 35.3 (#88)
| Benchmark | Kimi K2.5 Instant | Mistral Medium |
|---|---|---|
| LMArena Vision | 1254 | 1172 |
Multilingual Too close to call
Kimi K2.5 Instant: 52.0 (#94), Mistral Medium: 52.1 (#91)
| Benchmark | Kimi K2.5 Instant | Mistral Medium |
|---|---|---|
| LMArena Non-English | 1406 | 1408 |
| LMArena Chinese | 1449 | 1447 |
| LMArena French | 1403 | 1459 |
| LMArena German | 1413 | 1432 |
| LMArena Korean | 1378 | 1380 |
| LMArena Russian | 1404 | 1411 |
| LMArena Spanish | 1447 | 1433 |
| LMArena Japanese | — | 1378 |
Instruction Following Kimi K2.5 Instant leads
Kimi K2.5 Instant: 75.3 (#65), Mistral Medium: 73.7 (#116)
| Benchmark | Kimi K2.5 Instant | Mistral Medium |
|---|---|---|
| LMArena Instruction Following | 1430 | 1398 |
Long Context Too close to call
Kimi K2.5 Instant: 43.9 (#83), Mistral Medium: 42.9 (#114)
| Benchmark | Kimi K2.5 Instant | Mistral Medium |
|---|---|---|
| LMArena Longer Query | 1435 | 1406 |
Writing & Preference Too close to call
Kimi K2.5 Instant: 60.6 (#95), Mistral Medium: 60.0 (#103)
| Benchmark | Kimi K2.5 Instant | Mistral Medium |
|---|---|---|
| LMArena Text | 1420 | 1424 |
| LMArena Creative Writing | 1381 | 1391 |
| LMArena Multi-Turn | 1427 | 1418 |
| Short-Story Creative Writing | — | 77.3% |
Frequently asked questions
Is Kimi K2.5 Instant better than Mistral Medium?
Kimi K2.5 Instant is the stronger model overall, scoring 43.6 to 36.3 on the Noometry Index.
Is Kimi K2.5 Instant or Mistral Medium better for coding?
Kimi K2.5 Instant scores higher on coding benchmarks: 42.6 versus 34.2 in the Noometry coding category.
How many benchmarks do Kimi K2.5 Instant and Mistral Medium share?
17 benchmarks have published results for both models. Kimi K2.5 Instant has 18 scored results on Noometry and Mistral Medium has 36.