Model comparison
phi-3-medium 14B vs Step 5 Preview
Step 5 Preview is the stronger model overall, scoring 47.9 to 29.7 on the Noometry Index.
Last verified . 0 shared benchmarks.
Microsoft
StepFunSummary
- The widest gap is in knowledge, where Step 5 Preview leads 41.2 to 9.1.
- phi-3-medium 14B has downloadable open weights; the other is API-only.
Side by side
| phi-3-medium 14B | Step 5 Preview | |
|---|---|---|
| Provider | Microsoft | StepFun |
| Noometry Index | 29.7 | 47.9 |
| Released | 2024-04-23 | 2026-09-16 |
| Weights | Open | Proprietary |
| Context window | — | 1.02M |
| Max output | — | 66K |
| Input $ / M tokens | — | $1 |
| Output $ / M tokens | — | $2.70 |
| Results tracked | 13 | 18 |
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Category by category
Coding Step 5 Preview leads
phi-3-medium 14B: 36.8 (#201), Step 5 Preview: 51.8 (#36)
| Benchmark | phi-3-medium 14B | Step 5 Preview |
|---|---|---|
| LMArena WebDev | — | 1564 |
| SciCode | — | 58.9% |
| BigCodeBench Instruct | 37.6% | — |
| LMArena Coding | — | 1480 |
| BigCodeBench Complete | 48.7% | — |
Reasoning Not comparable
phi-3-medium 14B: —, Step 5 Preview: 40.0 (#57)
| Benchmark | phi-3-medium 14B | Step 5 Preview |
|---|---|---|
| CritPt | — | 20.9% |
| LMArena Hard Prompts | — | 1465 |
| Adversarial NLI | 55.8% | — |
| BIG-Bench Hard | 81.4% | — |
| Epoch Capabilities Index | 121.23 | — |
| HellaSwag | 82.4% | — |
| WinoGrande | 81.5% | — |
Math Step 5 Preview leads
phi-3-medium 14B: 27.3 (#250), Step 5 Preview: 46.1 (#72)
| Benchmark | phi-3-medium 14B | Step 5 Preview |
|---|---|---|
| ProofBench | — | 42% |
| LMArena Math | — | 1470 |
| MATH Level 5 | 17.6% | — |
Knowledge Step 5 Preview leads
phi-3-medium 14B: 9.1 (#306), Step 5 Preview: 41.2 (#112)
| Benchmark | phi-3-medium 14B | Step 5 Preview |
|---|---|---|
| GPQA Diamond | 27.6% | — |
| LMArena Expert | — | 1470 |
| ARC (AI2) Challenge | 91.6% | — |
| MMLU | 78% | — |
| OpenBookQA | 87.4% | — |
| TriviaQA | 73.9% | — |
Multimodal Not comparable
phi-3-medium 14B: —, Step 5 Preview: 41.0 (#41)
| Benchmark | phi-3-medium 14B | Step 5 Preview |
|---|---|---|
| LMArena Vision | — | 1267 |
Multilingual Not comparable
phi-3-medium 14B: —, Step 5 Preview: 53.8 (#54)
| Benchmark | phi-3-medium 14B | Step 5 Preview |
|---|---|---|
| LMArena Non-English | — | 1432 |
| LMArena Chinese | — | 1519 |
| LMArena Russian | — | 1436 |
| LMArena Spanish | — | 1439 |
Instruction Following Not comparable
phi-3-medium 14B: —, Step 5 Preview: 76.0 (#50)
| Benchmark | phi-3-medium 14B | Step 5 Preview |
|---|---|---|
| LMArena Instruction Following | — | 1444 |
Long Context Not comparable
phi-3-medium 14B: —, Step 5 Preview: 44.5 (#64)
| Benchmark | phi-3-medium 14B | Step 5 Preview |
|---|---|---|
| LMArena Longer Query | — | 1455 |
Writing & Preference Not comparable
phi-3-medium 14B: —, Step 5 Preview: 62.8 (#71)
| Benchmark | phi-3-medium 14B | Step 5 Preview |
|---|---|---|
| LMArena Text | — | 1442 |
| LMArena Creative Writing | — | 1410 |
| LMArena Multi-Turn | — | 1447 |
Frequently asked questions
Is phi-3-medium 14B better than Step 5 Preview?
Step 5 Preview is the stronger model overall, scoring 47.9 to 29.7 on the Noometry Index.
Is phi-3-medium 14B or Step 5 Preview better for coding?
Step 5 Preview scores higher on coding benchmarks: 51.8 versus 36.8 in the Noometry coding category.
How many benchmarks do phi-3-medium 14B and Step 5 Preview share?
0 benchmarks have published results for both models. phi-3-medium 14B has 13 scored results on Noometry and Step 5 Preview has 18.