Model comparison
GPT-5 Mini vs Phi 3 Mini 4k Instruct
GPT-5 Mini is the stronger model overall, scoring 41.8 to 27.9 on the Noometry Index.
Last verified . 18 shared benchmarks.
MicrosoftSummary
- They share 18 benchmarks with published results for both. GPT-5 Mini scores higher in 8 categories and Phi 3 Mini 4k Instruct in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in instruction following, where GPT-5 Mini leads 76.2 to 47.7.
- The biggest single-benchmark swing is Chess Puzzles: 30% for GPT-5 Mini and 0% for Phi 3 Mini 4k Instruct.
- Phi 3 Mini 4k Instruct has downloadable open weights; the other is API-only.
Side by side
| GPT-5 Mini | Phi 3 Mini 4k Instruct | |
|---|---|---|
| Provider | OpenAI | Microsoft |
| Noometry Index | 41.8 | 27.9 |
| Released | 2025-08-07 | 2024-04-23 |
| Weights | Proprietary | Open |
| Context window | 400K | — |
| Max output | 128K | — |
| Input $ / M tokens | $0.25 | — |
| Output $ / M tokens | $2 | — |
| Results tracked | 60 | 35 |
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Category by category
Coding GPT-5 Mini leads
GPT-5 Mini: 40.1 (#146), Phi 3 Mini 4k Instruct: 26.6 (#323)
| Benchmark | GPT-5 Mini | Phi 3 Mini 4k Instruct |
|---|---|---|
| LMArena Coding | 1406 | 1093 |
| SWE-bench Verified | 64.7% | — |
| SWE-bench Verified (bash only) | 59.8% | — |
| SWE-bench Multilingual | 39.7% | — |
| SciCode | 39.2% | — |
| WeirdML | 52.7% | — |
| LiveBench Coding | — | 15.5% |
| ALE-Bench | 799.77 | — |
| AlgoTune | 1.38 | — |
| HumanEval+ | — | 59.1% |
| MBPP+ | — | 54.2% |
Agentic & Tool Use Not comparable
GPT-5 Mini: 31.1 (#70), Phi 3 Mini 4k Instruct: —
| Benchmark | GPT-5 Mini | Phi 3 Mini 4k Instruct |
|---|---|---|
| Terminal-Bench | 34.8% | — |
| Berkeley Function Calling Leaderboard | 55.5% | — |
| Vending-Bench 2 | -31.18 | — |
Reasoning GPT-5 Mini leads
GPT-5 Mini: 23.9 (#168), Phi 3 Mini 4k Instruct: 14.1 (#328)
| Benchmark | GPT-5 Mini | Phi 3 Mini 4k Instruct |
|---|---|---|
| Chess Puzzles | 30% | 0% |
| LMArena Hard Prompts | 1380 | 1072 |
| ARC-AGI-2 | 4.4% | — |
| Kagi LLM Benchmark | 70.3% | — |
| ARC-AGI-1 | 54.3% | — |
| CritPt | 0% | — |
| EnigmaEval | 8.2% | — |
| LiveBench Reasoning | — | 26.8% |
| Mystery Game Puzzles | 10% | — |
| DTBench | 80.5% | — |
| LiveBench Data Analysis | — | 34.7% |
| LMCA | 34.2% | — |
| Adversarial NLI | — | 52.8% |
| BIG-Bench Hard | — | 71.7% |
| Epoch Capabilities Index | 145.52 | — |
| ForecastBench | 61 | — |
| HellaSwag | — | 76.7% |
| LiveBench | — | 22.4% |
| WinoGrande | — | 70.8% |
Math GPT-5 Mini leads
GPT-5 Mini: 46.7 (#69), Phi 3 Mini 4k Instruct: 26.6 (#257)
| Benchmark | GPT-5 Mini | Phi 3 Mini 4k Instruct |
|---|---|---|
| LMArena Math | 1378 | 1111 |
| FrontierMath (Tiers 1-3) | 46.7% | — |
| FrontierMath Tier 4 | 12.2% | — |
| OTIS Mock AIME 2024-2025 | 86.7% | — |
| ProofBench | 9% | — |
| Omni-MATH | 72.2% | — |
| LiveBench Math | — | 15.7% |
| MATH Level 5 | 97.8% | — |
| FrontierMath (Feb 2025 set) | 27.2% | — |
| FrontierMath Tier 4 (v1) | 6.3% | — |
Knowledge GPT-5 Mini leads
GPT-5 Mini: 45.6 (#86), Phi 3 Mini 4k Instruct: 28.5 (#246)
| Benchmark | GPT-5 Mini | Phi 3 Mini 4k Instruct |
|---|---|---|
| LMArena Expert | 1379 | 1045 |
| GPQA Diamond | 75% | — |
| Humanity's Last Exam | 19.4% | — |
| SimpleQA Verified | 21.6% | — |
| MMLU-Pro | 83.5% | — |
| Confabulations | 13.3% | — |
| Vectara Hallucination Rate | 12.9% | — |
| GPQA (HELM) | 75.6% | — |
| ARC (AI2) Challenge | — | 84.9% |
| MMLU | — | 68.8% |
| OpenBookQA | — | 88% |
| TriviaQA | — | 64% |
Multimodal Not comparable
GPT-5 Mini: 35.6 (#85), Phi 3 Mini 4k Instruct: —
| Benchmark | GPT-5 Mini | Phi 3 Mini 4k Instruct |
|---|---|---|
| LMArena Vision | 1202 | — |
| VPCT | 40.2% | — |
Multilingual GPT-5 Mini leads
GPT-5 Mini: 48.9 (#137), Phi 3 Mini 4k Instruct: 26.3 (#280)
| Benchmark | GPT-5 Mini | Phi 3 Mini 4k Instruct |
|---|---|---|
| LMArena Non-English | 1363 | 1021 |
| LMArena Chinese | 1385 | 1021 |
| LMArena French | 1386 | 1076 |
| LMArena German | 1366 | 1044 |
| LMArena Japanese | 1341 | 935 |
| LMArena Korean | 1308 | 905 |
| LMArena Russian | 1362 | 1022 |
| LMArena Spanish | 1355 | 1085 |
Instruction Following GPT-5 Mini leads
GPT-5 Mini: 76.2 (#46), Phi 3 Mini 4k Instruct: 47.7 (#303)
| Benchmark | GPT-5 Mini | Phi 3 Mini 4k Instruct |
|---|---|---|
| LMArena Instruction Following | 1357 | 1053 |
| LiveBench Instruction Following | — | 39.1% |
| IFEval | 92.7% | — |
Long Context GPT-5 Mini leads
GPT-5 Mini: 41.9 (#132), Phi 3 Mini 4k Instruct: 31.7 (#276)
| Benchmark | GPT-5 Mini | Phi 3 Mini 4k Instruct |
|---|---|---|
| LMArena Longer Query | 1355 | 1044 |
| Fiction.LiveBench | 69.4% | — |
Writing & Preference GPT-5 Mini leads
GPT-5 Mini: 55.2 (#148), Phi 3 Mini 4k Instruct: 27.6 (#300)
| Benchmark | GPT-5 Mini | Phi 3 Mini 4k Instruct |
|---|---|---|
| LMArena Text | 1373 | 1073 |
| LMArena Creative Writing | 1325 | 1037 |
| LMArena Multi-Turn | 1363 | 1018 |
| Short-Story Creative Writing | 83.1% | — |
| EQ-Bench Creative Writing | 1313 | — |
| WildBench | 85.5% | — |
| LiveBench Language | — | 9.2% |
Frequently asked questions
Is GPT-5 Mini better than Phi 3 Mini 4k Instruct?
GPT-5 Mini is the stronger model overall, scoring 41.8 to 27.9 on the Noometry Index.
Is GPT-5 Mini or Phi 3 Mini 4k Instruct better for coding?
GPT-5 Mini scores higher on coding benchmarks: 40.1 versus 26.6 in the Noometry coding category.
How many benchmarks do GPT-5 Mini and Phi 3 Mini 4k Instruct share?
18 benchmarks have published results for both models. GPT-5 Mini has 60 scored results on Noometry and Phi 3 Mini 4k Instruct has 35.