Model comparison
Kimi K2 (Jul 2025) vs Phi 3 Medium 4k Instruct
Kimi K2 (Jul 2025) is the stronger model overall, scoring 40.9 to 32.4 on the Noometry Index.
Last verified . 17 shared benchmarks.
MicrosoftSummary
- They share 17 benchmarks with published results for both. Kimi K2 (Jul 2025) scores higher in 8 categories and Phi 3 Medium 4k Instruct 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 34.3.
Side by side
| Kimi K2 (Jul 2025) | Phi 3 Medium 4k Instruct | |
|---|---|---|
| Provider | Moonshot AI | Microsoft |
| Noometry Index | 40.9 | 32.4 |
| Released | 2025-07-12 | — |
| Weights | Open | Open |
| Context window | 262K | — |
| Max output | 262K | — |
| Input $ / M tokens | $0.57 | — |
| Output $ / M tokens | $2.30 | — |
| Results tracked | 42 | 17 |
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Category by category
Coding Kimi K2 (Jul 2025) leads
Kimi K2 (Jul 2025): 43.1 (#83), Phi 3 Medium 4k Instruct: 32.3 (#263)
| Benchmark | Kimi K2 (Jul 2025) | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Coding | 1399 | 1130 |
| SWE-bench Verified (bash only) | 63.4% | — |
| Aider Polyglot | 59.1% | — |
| GSO | 4.9% | — |
| WeirdML | 42.8% | — |
| ALE-Bench | 597.5 | — |
Agentic & Tool Use Not comparable
Kimi K2 (Jul 2025): 32.2 (#59), Phi 3 Medium 4k Instruct: —
| Benchmark | Kimi K2 (Jul 2025) | Phi 3 Medium 4k Instruct |
|---|---|---|
| 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), Phi 3 Medium 4k Instruct: 20.8 (#214)
| Benchmark | Kimi K2 (Jul 2025) | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Hard Prompts | 1384 | 1127 |
| SimpleBench | 26.3% | — |
| Kagi LLM Benchmark | 64.4% | — |
| Epoch Capabilities Index | 146.02 | — |
| ForecastBench | 60.2 | — |
Math Kimi K2 (Jul 2025) leads
Kimi K2 (Jul 2025): 40.1 (#81), Phi 3 Medium 4k Instruct: 30.9 (#202)
| Benchmark | Kimi K2 (Jul 2025) | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Math | 1396 | 1173 |
| 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), Phi 3 Medium 4k Instruct: 29.6 (#226)
| Benchmark | Kimi K2 (Jul 2025) | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Expert | 1363 | 1108 |
| 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), Phi 3 Medium 4k Instruct: 30.8 (#258)
| Benchmark | Kimi K2 (Jul 2025) | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Non-English | 1372 | 1094 |
| LMArena Chinese | 1416 | 1108 |
| LMArena French | 1379 | 1109 |
| LMArena German | 1386 | 1101 |
| LMArena Japanese | 1349 | 1042 |
| LMArena Korean | 1324 | 954 |
| LMArena Russian | 1384 | 1145 |
| LMArena Spanish | 1383 | 1095 |
Instruction Following Kimi K2 (Jul 2025) leads
Kimi K2 (Jul 2025): 71.3 (#151), Phi 3 Medium 4k Instruct: 57.8 (#263)
| Benchmark | Kimi K2 (Jul 2025) | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Instruction Following | 1347 | 1114 |
| IFEval | 85% | — |
Long Context Kimi K2 (Jul 2025) leads
Kimi K2 (Jul 2025): 41.2 (#140), Phi 3 Medium 4k Instruct: 33.9 (#250)
| Benchmark | Kimi K2 (Jul 2025) | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Longer Query | 1353 | 1120 |
| Fiction.LiveBench | 66.7% | — |
| CL-bench | 17.6% | — |
Writing & Preference Kimi K2 (Jul 2025) leads
Kimi K2 (Jul 2025): 62.5 (#76), Phi 3 Medium 4k Instruct: 34.3 (#267)
| Benchmark | Kimi K2 (Jul 2025) | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Text | 1380 | 1138 |
| LMArena Creative Writing | 1349 | 1106 |
| LMArena Multi-Turn | 1371 | 1088 |
| Short-Story Creative Writing | 85.6% | — |
| EQ-Bench Creative Writing | 1666 | — |
| WildBench | 86.2% | — |
Frequently asked questions
Is Kimi K2 (Jul 2025) better than Phi 3 Medium 4k Instruct?
Kimi K2 (Jul 2025) is the stronger model overall, scoring 40.9 to 32.4 on the Noometry Index.
Is Kimi K2 (Jul 2025) or Phi 3 Medium 4k Instruct better for coding?
Kimi K2 (Jul 2025) scores higher on coding benchmarks: 43.1 versus 32.3 in the Noometry coding category.
How many benchmarks do Kimi K2 (Jul 2025) and Phi 3 Medium 4k Instruct share?
17 benchmarks have published results for both models. Kimi K2 (Jul 2025) has 42 scored results on Noometry and Phi 3 Medium 4k Instruct has 17.