Model comparison
Kimi K2.5 vs Phi 3 Medium 4k Instruct
Kimi K2.5 is the stronger model overall, scoring 47.8 to 32.4 on the Noometry Index.
Last verified . 17 shared benchmarks.
MicrosoftSummary
- They share 17 benchmarks with published results for both. Kimi K2.5 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 K2.5 leads 65.3 to 34.3.
Side by side
| Kimi K2.5 | Phi 3 Medium 4k Instruct | |
|---|---|---|
| Provider | Moonshot AI | Microsoft |
| Noometry Index | 47.8 | 32.4 |
| Released | 2026-01-27 | — |
| Weights | Open | Open |
| Context window | 262K | — |
| Max output | 262K | — |
| Input $ / M tokens | $0.45 | — |
| Output $ / M tokens | $2.25 | — |
| Results tracked | 51 | 17 |
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Category by category
Coding Kimi K2.5 leads
Kimi K2.5: 48.7 (#48), Phi 3 Medium 4k Instruct: 32.3 (#263)
| Benchmark | Kimi K2.5 | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Coding | 1474 | 1130 |
| SWE-bench Verified | 73.8% | — |
| SWE-bench Verified (bash only) | 70.8% | — |
| LMArena WebDev | 1436 | — |
| SWE-bench Multilingual | 67.3% | — |
| SciCode | 49% | — |
| WeirdML | 45.6% | — |
| ALE-Bench | 821.65 | — |
Agentic & Tool Use Not comparable
Kimi K2.5: 34.0 (#44), Phi 3 Medium 4k Instruct: —
| Benchmark | Kimi K2.5 | Phi 3 Medium 4k Instruct |
|---|---|---|
| Terminal-Bench | 43.2% | — |
| OSWorld | 63.3% | — |
| Vending-Bench 2 | 1,198 | — |
Reasoning Kimi K2.5 leads
Kimi K2.5: 31.2 (#74), Phi 3 Medium 4k Instruct: 20.8 (#214)
| Benchmark | Kimi K2.5 | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Hard Prompts | 1454 | 1127 |
| ARC-AGI-2 | 11.8% | — |
| SimpleBench | 46.8% | — |
| Kagi LLM Benchmark | 78.5% | — |
| NYT Connections (extended) | 69.9% | — |
| ARC-AGI-1 | 65.3% | — |
| CritPt | 3.1% | — |
| Chess Puzzles | 12% | — |
| EnigmaEval | 3.4% | — |
| Thematic Generalization | 69.4% | — |
| Epoch Capabilities Index | 148.05 | — |
Math Kimi K2.5 leads
Kimi K2.5: 50.3 (#46), Phi 3 Medium 4k Instruct: 30.9 (#202)
| Benchmark | Kimi K2.5 | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Math | 1470 | 1173 |
| MathArena Final-Answer Competitions | 62.3% | — |
| OTIS Mock AIME 2024-2025 | 92.2% | — |
| FrontierMath (Feb 2025 set) | 27.9% | — |
| FrontierMath Tier 4 (v1) | 4.2% | — |
Knowledge Kimi K2.5 leads
Kimi K2.5: 53.6 (#52), Phi 3 Medium 4k Instruct: 29.6 (#226)
| Benchmark | Kimi K2.5 | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Expert | 1466 | 1108 |
| GPQA Diamond | 87.6% | — |
| Humanity's Last Exam | 24.4% | — |
| SimpleQA Verified | 34.3% | — |
| Vectara Hallucination Rate | 14.2% | — |
Multimodal Not comparable
Kimi K2.5: 40.4 (#37), Phi 3 Medium 4k Instruct: —
| Benchmark | Kimi K2.5 | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Vision | 1269 | — |
| LMArena Document | 1430 | — |
Multilingual Kimi K2.5 leads
Kimi K2.5: 54.1 (#50), Phi 3 Medium 4k Instruct: 30.8 (#258)
| Benchmark | Kimi K2.5 | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Non-English | 1433 | 1094 |
| LMArena Chinese | 1495 | 1108 |
| LMArena French | 1454 | 1109 |
| LMArena German | 1441 | 1101 |
| LMArena Japanese | 1422 | 1042 |
| LMArena Korean | 1412 | 954 |
| LMArena Russian | 1436 | 1145 |
| LMArena Spanish | 1450 | 1095 |
Instruction Following Kimi K2.5 leads
Kimi K2.5: 75.5 (#60), Phi 3 Medium 4k Instruct: 57.8 (#263)
| Benchmark | Kimi K2.5 | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Instruction Following | 1431 | 1114 |
Long Context Kimi K2.5 leads
Kimi K2.5: 52.1 (#7), Phi 3 Medium 4k Instruct: 33.9 (#250)
| Benchmark | Kimi K2.5 | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Longer Query | 1445 | 1120 |
| Fiction.LiveBench | 86.1% | — |
| CL-bench | 19.3% | — |
| CL-bench Life | 13.2% | — |
Writing & Preference Kimi K2.5 leads
Kimi K2.5: 65.3 (#51), Phi 3 Medium 4k Instruct: 34.3 (#267)
| Benchmark | Kimi K2.5 | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Text | 1445 | 1138 |
| LMArena Creative Writing | 1423 | 1106 |
| LMArena Multi-Turn | 1444 | 1088 |
| EQ-Bench Creative Writing | 1579 | — |
Frequently asked questions
Is Kimi K2.5 better than Phi 3 Medium 4k Instruct?
Kimi K2.5 is the stronger model overall, scoring 47.8 to 32.4 on the Noometry Index.
Is Kimi K2.5 or Phi 3 Medium 4k Instruct better for coding?
Kimi K2.5 scores higher on coding benchmarks: 48.7 versus 32.3 in the Noometry coding category.
How many benchmarks do Kimi K2.5 and Phi 3 Medium 4k Instruct share?
17 benchmarks have published results for both models. Kimi K2.5 has 51 scored results on Noometry and Phi 3 Medium 4k Instruct has 17.