Model comparison
o3-mini vs phi-3-medium 14B
o3-mini is the stronger model overall, scoring 36.7 to 29.7 on the Noometry Index.
Last verified . 3 shared benchmarks.
MicrosoftSummary
- They share 3 benchmarks with published results for both. o3-mini scores higher in 3 categories and phi-3-medium 14B in 0 categories; 2 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where o3-mini leads 38.3 to 9.1.
- The biggest single-benchmark swing is MATH Level 5: 96.5% for o3-mini and 17.6% for phi-3-medium 14B.
- phi-3-medium 14B has downloadable open weights; the other is API-only.
Side by side
| o3-mini | phi-3-medium 14B | |
|---|---|---|
| Provider | OpenAI | Microsoft |
| Noometry Index | 36.7 | 29.7 |
| Released | 2024-12-20 | 2024-04-23 |
| Weights | Proprietary | Open |
| Context window | 200K | — |
| Max output | 100K | — |
| Input $ / M tokens | $1.10 | — |
| Output $ / M tokens | $4.40 | — |
| Results tracked | 51 | 13 |
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Category by category
Coding o3-mini leads
o3-mini: 40.8 (#132), phi-3-medium 14B: 36.8 (#201)
| Benchmark | o3-mini | phi-3-medium 14B |
|---|---|---|
| Aider Polyglot | 60.4% | — |
| SciCode | 39.8% | — |
| GSO | 1.3% | — |
| WeirdML | 43.7% | — |
| BigCodeBench Instruct | — | 37.6% |
| LiveBench Coding | 82.7% | — |
| LMArena Coding | 1378 | — |
| BigCodeBench Complete | — | 48.7% |
| CadEval | 54% | — |
Agentic & Tool Use Not comparable
o3-mini: 29.6 (#84), phi-3-medium 14B: —
| Benchmark | o3-mini | phi-3-medium 14B |
|---|---|---|
| Cybench | 22.5% | — |
Reasoning Not comparable
o3-mini: 16.3 (#305), phi-3-medium 14B: —
| Benchmark | o3-mini | phi-3-medium 14B |
|---|---|---|
| Epoch Capabilities Index | 140.34 | 121.23 |
| ARC-AGI-2 | 3% | — |
| SimpleBench | 22.8% | — |
| ARC-AGI-1 | 34.5% | — |
| CritPt | 0.3% | — |
| Chess Puzzles | 17% | — |
| LiveBench Reasoning | 89.6% | — |
| LMArena Hard Prompts | 1366 | — |
| Mystery Game Puzzles | 7% | — |
| DTBench | 68.8% | — |
| LiveBench Data Analysis | 70.6% | — |
| LMCA | 19% | — |
| Adversarial NLI | — | 55.8% |
| BIG-Bench Hard | — | 81.4% |
| ForecastBench | 59.6 | — |
| HellaSwag | — | 82.4% |
| LiveBench | 75.9% | — |
| WinoGrande | — | 81.5% |
Math Too close to call
o3-mini: 28.1 (#244), phi-3-medium 14B: 27.3 (#250)
| Benchmark | o3-mini | phi-3-medium 14B |
|---|---|---|
| MATH Level 5 | 96.5% | 17.6% |
| FrontierMath (Tiers 1-3) | 18.6% | — |
| FrontierMath Tier 4 | 0% | — |
| OTIS Mock AIME 2024-2025 | 76.9% | — |
| LiveBench Math | 77.3% | — |
| LMArena Math | 1396 | — |
| FrontierMath (Feb 2025 set) | 12.4% | — |
| FrontierMath Tier 4 (v1) | 4.2% | — |
Knowledge o3-mini leads
o3-mini: 38.3 (#146), phi-3-medium 14B: 9.1 (#306)
| Benchmark | o3-mini | phi-3-medium 14B |
|---|---|---|
| GPQA Diamond | 77% | 27.6% |
| SimpleQA Verified | 15.3% | — |
| Confabulations | 17.9% | — |
| LMArena Expert | 1364 | — |
| ARC (AI2) Challenge | — | 91.6% |
| MMLU | — | 78% |
| OpenBookQA | — | 87.4% |
| TriviaQA | — | 73.9% |
Multilingual Not comparable
o3-mini: 45.7 (#164), phi-3-medium 14B: —
| Benchmark | o3-mini | phi-3-medium 14B |
|---|---|---|
| LMArena Non-English | 1319 | — |
| LMArena Chinese | 1379 | — |
| LMArena French | 1334 | — |
| LMArena German | 1303 | — |
| LMArena Japanese | 1286 | — |
| LMArena Korean | 1314 | — |
| LMArena Russian | 1304 | — |
| LMArena Spanish | 1321 | — |
Instruction Following Not comparable
o3-mini: 75.1 (#72), phi-3-medium 14B: —
| Benchmark | o3-mini | phi-3-medium 14B |
|---|---|---|
| LiveBench Instruction Following | 84.4% | — |
| LMArena Instruction Following | 1337 | — |
Long Context Not comparable
o3-mini: 33.8 (#256), phi-3-medium 14B: —
| Benchmark | o3-mini | phi-3-medium 14B |
|---|---|---|
| Fiction.LiveBench | 50% | — |
| LMArena Longer Query | 1343 | — |
Writing & Preference Not comparable
o3-mini: 50.3 (#182), phi-3-medium 14B: —
| Benchmark | o3-mini | phi-3-medium 14B |
|---|---|---|
| LMArena Text | 1337 | — |
| LMArena Creative Writing | 1286 | — |
| Short-Story Creative Writing | 61.7% | — |
| LMArena Multi-Turn | 1320 | — |
| LiveBench Language | 50.7% | — |
Frequently asked questions
Is o3-mini better than phi-3-medium 14B?
o3-mini is the stronger model overall, scoring 36.7 to 29.7 on the Noometry Index.
Is o3-mini or phi-3-medium 14B better for coding?
o3-mini scores higher on coding benchmarks: 40.8 versus 36.8 in the Noometry coding category.
How many benchmarks do o3-mini and phi-3-medium 14B share?
3 benchmarks have published results for both models. o3-mini has 51 scored results on Noometry and phi-3-medium 14B has 13.