Model comparison
o3-mini vs Phi-4 Mini
o3-mini is the stronger model overall, scoring 36.7 to 30.9 on the Noometry Index. Phi-4 Mini costs 15× less per token, which makes it the better buy when o3-mini's lead doesn't matter for your workload.
Last verified . 2 shared benchmarks.
MicrosoftSummary
- They share 2 benchmarks with published results for both. o3-mini scores higher in 2 categories and Phi-4 Mini in 1 category; 3 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where o3-mini leads 38.3 to 25.3.
- The biggest single-benchmark swing is SciCode: 39.8% for o3-mini and 10.8% for Phi-4 Mini.
- Phi-4 Mini is cheaper at $0.075 / $0.30 per million input/output tokens, against $1.10 / $4.40 for o3-mini.
- o3-mini accepts more context: 200K tokens versus 128K.
- Phi-4 Mini has downloadable open weights; the other is API-only.
Side by side
| o3-mini | Phi-4 Mini | |
|---|---|---|
| Provider | OpenAI | Microsoft |
| Noometry Index | 36.7 | 30.9 |
| Released | 2024-12-20 | 2024-12-11 |
| Weights | Proprietary | Open |
| Context window | 200K | 128K |
| Max output | 100K | 4K |
| Input $ / M tokens | $1.10 | $0.075 |
| Output $ / M tokens | $4.40 | $0.30 |
| Results tracked | 51 | 3 |
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Category by category
Coding o3-mini leads
o3-mini: 40.8 (#132), Phi-4 Mini: 28.1 (#317)
| Benchmark | o3-mini | Phi-4 Mini |
|---|---|---|
| SciCode | 39.8% | 10.8% |
| Aider Polyglot | 60.4% | — |
| GSO | 1.3% | — |
| WeirdML | 43.7% | — |
| LiveBench Coding | 82.7% | — |
| LMArena Coding | 1378 | — |
| CadEval | 54% | — |
Agentic & Tool Use Not comparable
o3-mini: 29.6 (#84), Phi-4 Mini: —
| Benchmark | o3-mini | Phi-4 Mini |
|---|---|---|
| Cybench | 22.5% | — |
Reasoning Phi-4 Mini leads
o3-mini: 16.3 (#305), Phi-4 Mini: 22.4 (#195)
| Benchmark | o3-mini | Phi-4 Mini |
|---|---|---|
| CritPt | 0.3% | 0% |
| ARC-AGI-2 | 3% | — |
| SimpleBench | 22.8% | — |
| ARC-AGI-1 | 34.5% | — |
| 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% | — |
| Epoch Capabilities Index | 140.34 | — |
| ForecastBench | 59.6 | — |
| LiveBench | 75.9% | — |
Math Not comparable
o3-mini: 28.1 (#244), Phi-4 Mini: —
| Benchmark | o3-mini | Phi-4 Mini |
|---|---|---|
| FrontierMath (Tiers 1-3) | 18.6% | — |
| FrontierMath Tier 4 | 0% | — |
| OTIS Mock AIME 2024-2025 | 76.9% | — |
| LiveBench Math | 77.3% | — |
| LMArena Math | 1396 | — |
| MATH Level 5 | 96.5% | — |
| FrontierMath (Feb 2025 set) | 12.4% | — |
| FrontierMath Tier 4 (v1) | 4.2% | — |
Knowledge o3-mini leads
o3-mini: 38.3 (#146), Phi-4 Mini: 25.3 (#262)
| Benchmark | o3-mini | Phi-4 Mini |
|---|---|---|
| GPQA Diamond | 77% | — |
| SimpleQA Verified | 15.3% | — |
| Confabulations | 17.9% | — |
| Vectara Hallucination Rate | — | 23.5% |
| LMArena Expert | 1364 | — |
Multilingual Not comparable
o3-mini: 45.7 (#164), Phi-4 Mini: —
| Benchmark | o3-mini | Phi-4 Mini |
|---|---|---|
| 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-4 Mini: —
| Benchmark | o3-mini | Phi-4 Mini |
|---|---|---|
| LiveBench Instruction Following | 84.4% | — |
| LMArena Instruction Following | 1337 | — |
Long Context Not comparable
o3-mini: 33.8 (#256), Phi-4 Mini: —
| Benchmark | o3-mini | Phi-4 Mini |
|---|---|---|
| Fiction.LiveBench | 50% | — |
| LMArena Longer Query | 1343 | — |
Writing & Preference Not comparable
o3-mini: 50.3 (#182), Phi-4 Mini: —
| Benchmark | o3-mini | Phi-4 Mini |
|---|---|---|
| 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-4 Mini?
o3-mini is the stronger model overall, scoring 36.7 to 30.9 on the Noometry Index. Phi-4 Mini costs 15× less per token, which makes it the better buy when o3-mini's lead doesn't matter for your workload.
Which is cheaper, o3-mini or Phi-4 Mini?
Phi-4 Mini is cheaper. It lists at $0.075 per million input tokens and $0.30 per million output tokens; o3-mini lists at $1.10 and $4.40.
Is o3-mini or Phi-4 Mini better for coding?
o3-mini scores higher on coding benchmarks: 40.8 versus 28.1 in the Noometry coding category.
Which has the bigger context window?
o3-mini does, with 200K tokens against 128K.
How many benchmarks do o3-mini and Phi-4 Mini share?
2 benchmarks have published results for both models. o3-mini has 51 scored results on Noometry and Phi-4 Mini has 3.