Model comparison
GPT-5.5 Pro vs Phi 3 Mini 4k Instruct
GPT-5.5 Pro is the stronger model overall, scoring 64.3 to 27.9 on the Noometry Index.
Last verified . 1 shared benchmarks.
MicrosoftSummary
- They share 1 benchmark with published results for both. GPT-5.5 Pro scores higher in 3 categories and Phi 3 Mini 4k Instruct in 0 categories; 3 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where GPT-5.5 Pro leads 73.3 to 14.1.
- The biggest single-benchmark swing is Chess Puzzles: 64% for GPT-5.5 Pro 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-5.5 Pro | Phi 3 Mini 4k Instruct | |
|---|---|---|
| Provider | OpenAI | Microsoft |
| Noometry Index | 64.3 | 27.9 |
| Released | 2026-04-23 | 2024-04-23 |
| Weights | Proprietary | Open |
| Context window | 1.05M | — |
| Max output | 128K | — |
| Input $ / M tokens | $30 | — |
| Output $ / M tokens | $180 | — |
| Results tracked | 14 | 35 |
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Category by category
Coding Not comparable
GPT-5.5 Pro: —, Phi 3 Mini 4k Instruct: 26.6 (#323)
| Benchmark | GPT-5.5 Pro | Phi 3 Mini 4k Instruct |
|---|---|---|
| LiveBench Coding | — | 15.5% |
| LMArena Coding | — | 1093 |
| HumanEval+ | — | 59.1% |
| MBPP+ | — | 54.2% |
Reasoning GPT-5.5 Pro leads
GPT-5.5 Pro: 73.3 (#10), Phi 3 Mini 4k Instruct: 14.1 (#328)
| Benchmark | GPT-5.5 Pro | Phi 3 Mini 4k Instruct |
|---|---|---|
| Chess Puzzles | 64% | 0% |
| ARC-AGI-2 | 84.6% | — |
| SimpleBench | 76.9% | — |
| ARC-AGI-1 | 96.5% | — |
| CritPt | 30.6% | — |
| LiveBench Reasoning | — | 26.8% |
| LMArena Hard Prompts | — | 1072 |
| DTBench | 96% | — |
| LiveBench Data Analysis | — | 34.7% |
| LMCA | 53.9% | — |
| Adversarial NLI | — | 52.8% |
| BIG-Bench Hard | — | 71.7% |
| Epoch Capabilities Index | 162.07 | — |
| HellaSwag | — | 76.7% |
| LiveBench | — | 22.4% |
| WinoGrande | — | 70.8% |
Math GPT-5.5 Pro leads
GPT-5.5 Pro: 84.0 (#10), Phi 3 Mini 4k Instruct: 26.6 (#257)
| Benchmark | GPT-5.5 Pro | Phi 3 Mini 4k Instruct |
|---|---|---|
| FrontierMath (Tiers 1-3) | 87.7% | — |
| FrontierMath Tier 4 | 78% | — |
| OTIS Mock AIME 2024-2025 | 100% | — |
| LiveBench Math | — | 15.7% |
| LMArena Math | — | 1111 |
| FrontierMath (Feb 2025 set) | 52.4% | — |
| FrontierMath Tier 4 (v1) | 39.6% | — |
Knowledge GPT-5.5 Pro leads
GPT-5.5 Pro: 64.1 (#19), Phi 3 Mini 4k Instruct: 28.5 (#246)
| Benchmark | GPT-5.5 Pro | Phi 3 Mini 4k Instruct |
|---|---|---|
| GPQA Diamond | 93.9% | — |
| LMArena Expert | — | 1045 |
| ARC (AI2) Challenge | — | 84.9% |
| MMLU | — | 68.8% |
| OpenBookQA | — | 88% |
| TriviaQA | — | 64% |
Multilingual Not comparable
GPT-5.5 Pro: —, Phi 3 Mini 4k Instruct: 26.3 (#280)
| Benchmark | GPT-5.5 Pro | Phi 3 Mini 4k Instruct |
|---|---|---|
| LMArena Non-English | — | 1021 |
| LMArena Chinese | — | 1021 |
| LMArena French | — | 1076 |
| LMArena German | — | 1044 |
| LMArena Japanese | — | 935 |
| LMArena Korean | — | 905 |
| LMArena Russian | — | 1022 |
| LMArena Spanish | — | 1085 |
Instruction Following Not comparable
GPT-5.5 Pro: —, Phi 3 Mini 4k Instruct: 47.7 (#303)
| Benchmark | GPT-5.5 Pro | Phi 3 Mini 4k Instruct |
|---|---|---|
| LiveBench Instruction Following | — | 39.1% |
| LMArena Instruction Following | — | 1053 |
Long Context Not comparable
GPT-5.5 Pro: —, Phi 3 Mini 4k Instruct: 31.7 (#276)
| Benchmark | GPT-5.5 Pro | Phi 3 Mini 4k Instruct |
|---|---|---|
| LMArena Longer Query | — | 1044 |
Writing & Preference Not comparable
GPT-5.5 Pro: —, Phi 3 Mini 4k Instruct: 27.6 (#300)
| Benchmark | GPT-5.5 Pro | Phi 3 Mini 4k Instruct |
|---|---|---|
| LMArena Text | — | 1073 |
| LMArena Creative Writing | — | 1037 |
| LMArena Multi-Turn | — | 1018 |
| LiveBench Language | — | 9.2% |
Frequently asked questions
Is GPT-5.5 Pro better than Phi 3 Mini 4k Instruct?
GPT-5.5 Pro is the stronger model overall, scoring 64.3 to 27.9 on the Noometry Index.
How many benchmarks do GPT-5.5 Pro and Phi 3 Mini 4k Instruct share?
1 benchmark has published results for both models. GPT-5.5 Pro has 14 scored results on Noometry and Phi 3 Mini 4k Instruct has 35.