Model comparison
Kimi K2 (Jul 2025) vs Magistral Medium
Kimi K2 (Jul 2025) is the stronger model overall, scoring 40.9 to 34.8 on the Noometry Index.
Last verified . 18 shared benchmarks.
Mistral AISummary
- They share 18 benchmarks with published results for both. Kimi K2 (Jul 2025) scores higher in 8 categories and Magistral Medium in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Kimi K2 (Jul 2025) leads 62.5 to 46.5.
- The biggest single-benchmark swing is Kagi LLM Benchmark: 64.4% for Kimi K2 (Jul 2025) and 16.2% for Magistral Medium.
- Kimi K2 (Jul 2025) is cheaper at $0.57 / $2.30 per million input/output tokens, against $2 / $5 for Magistral Medium.
- Kimi K2 (Jul 2025) accepts more context: 262K tokens versus 128K.
Side by side
| Kimi K2 (Jul 2025) | Magistral Medium | |
|---|---|---|
| Provider | Moonshot AI | Mistral AI |
| Noometry Index | 40.9 | 34.8 |
| Released | 2025-07-12 | 2025-03-17 |
| Weights | Open | Open |
| Context window | 262K | 128K |
| Max output | 262K | 16K |
| Input $ / M tokens | $0.57 | $2 |
| Output $ / M tokens | $2.30 | $5 |
| Results tracked | 42 | 22 |
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Category by category
Coding Kimi K2 (Jul 2025) leads
Kimi K2 (Jul 2025): 43.1 (#83), Magistral Medium: 38.6 (#161)
| Benchmark | Kimi K2 (Jul 2025) | Magistral Medium |
|---|---|---|
| LMArena Coding | 1399 | 1319 |
| SWE-bench Verified (bash only) | 63.4% | — |
| Aider Polyglot | 59.1% | — |
| SciCode | — | 39.2% |
| GSO | 4.9% | — |
| WeirdML | 42.8% | — |
| ALE-Bench | 597.5 | — |
Agentic & Tool Use Not comparable
Kimi K2 (Jul 2025): 32.2 (#59), Magistral Medium: —
| Benchmark | Kimi K2 (Jul 2025) | Magistral Medium |
|---|---|---|
| Terminal-Bench | 35.7% | — |
| Berkeley Function Calling Leaderboard | 59.1% | — |
| METR Time Horizons | 59.2% | — |
Reasoning Kimi K2 (Jul 2025) leads
Kimi K2 (Jul 2025): 22.7 (#173), Magistral Medium: 8.7 (#342)
| Benchmark | Kimi K2 (Jul 2025) | Magistral Medium |
|---|---|---|
| Kagi LLM Benchmark | 64.4% | 16.2% |
| LMArena Hard Prompts | 1384 | 1267 |
| ARC-AGI-2 | — | 0% |
| SimpleBench | 26.3% | — |
| ARC-AGI-1 | — | 6.1% |
| CritPt | — | 0.3% |
| Epoch Capabilities Index | 146.02 | — |
| ForecastBench | 60.2 | — |
Math Kimi K2 (Jul 2025) leads
Kimi K2 (Jul 2025): 40.1 (#81), Magistral Medium: 32.4 (#187)
| Benchmark | Kimi K2 (Jul 2025) | Magistral Medium |
|---|---|---|
| LMArena Math | 1396 | 1249 |
| Omni-MATH | 65.4% | — |
| FrontierMath (Feb 2025 set) | 21.4% | — |
| FrontierMath Tier 4 (v1) | 0% | — |
Knowledge Kimi K2 (Jul 2025) leads
Kimi K2 (Jul 2025): 36.9 (#153), Magistral Medium: 32.9 (#199)
| Benchmark | Kimi K2 (Jul 2025) | Magistral Medium |
|---|---|---|
| LMArena Expert | 1363 | 1222 |
| MMLU-Pro | 81.9% | — |
| Confabulations | 20.4% | — |
| Vectara Hallucination Rate | 17.9% | — |
| GPQA (HELM) | 65.3% | — |
Multilingual Kimi K2 (Jul 2025) leads
Kimi K2 (Jul 2025): 49.8 (#125), Magistral Medium: 39.8 (#219)
| Benchmark | Kimi K2 (Jul 2025) | Magistral Medium |
|---|---|---|
| LMArena Non-English | 1372 | 1232 |
| LMArena Chinese | 1416 | 1225 |
| LMArena French | 1379 | 1268 |
| LMArena German | 1386 | 1248 |
| LMArena Japanese | 1349 | 1176 |
| LMArena Korean | 1324 | 1125 |
| LMArena Russian | 1384 | 1224 |
| LMArena Spanish | 1383 | 1269 |
Instruction Following Kimi K2 (Jul 2025) leads
Kimi K2 (Jul 2025): 71.3 (#151), Magistral Medium: 66.2 (#207)
| Benchmark | Kimi K2 (Jul 2025) | Magistral Medium |
|---|---|---|
| LMArena Instruction Following | 1347 | 1254 |
| IFEval | 85% | — |
Long Context Kimi K2 (Jul 2025) leads
Kimi K2 (Jul 2025): 41.2 (#140), Magistral Medium: 39.3 (#178)
| Benchmark | Kimi K2 (Jul 2025) | Magistral Medium |
|---|---|---|
| LMArena Longer Query | 1353 | 1295 |
| Fiction.LiveBench | 66.7% | — |
| CL-bench | 17.6% | — |
Writing & Preference Kimi K2 (Jul 2025) leads
Kimi K2 (Jul 2025): 62.5 (#76), Magistral Medium: 46.5 (#214)
| Benchmark | Kimi K2 (Jul 2025) | Magistral Medium |
|---|---|---|
| LMArena Text | 1380 | 1255 |
| LMArena Creative Writing | 1349 | 1245 |
| LMArena Multi-Turn | 1371 | 1275 |
| Short-Story Creative Writing | 85.6% | — |
| EQ-Bench Creative Writing | 1666 | — |
| WildBench | 86.2% | — |
Frequently asked questions
Is Kimi K2 (Jul 2025) better than Magistral Medium?
Kimi K2 (Jul 2025) is the stronger model overall, scoring 40.9 to 34.8 on the Noometry Index.
Which is cheaper, Kimi K2 (Jul 2025) or Magistral Medium?
Kimi K2 (Jul 2025) is cheaper. It lists at $0.57 per million input tokens and $2.30 per million output tokens; Magistral Medium lists at $2 and $5.
Is Kimi K2 (Jul 2025) or Magistral Medium better for coding?
Kimi K2 (Jul 2025) scores higher on coding benchmarks: 43.1 versus 38.6 in the Noometry coding category.
Which has the bigger context window?
Kimi K2 (Jul 2025) does, with 262K tokens against 128K.
How many benchmarks do Kimi K2 (Jul 2025) and Magistral Medium share?
18 benchmarks have published results for both models. Kimi K2 (Jul 2025) has 42 scored results on Noometry and Magistral Medium has 22.