Model comparison
Gemini 3.1 Flash Lite vs Phi 3 Mini 128k Instruct
Gemini 3.1 Flash Lite is the stronger model overall, scoring 40.8 to 29.7 on the Noometry Index.
Last verified . 17 shared benchmarks.
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MicrosoftSummary
- They share 17 benchmarks with published results for both. Gemini 3.1 Flash Lite scores higher in 8 categories and Phi 3 Mini 128k Instruct in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Gemini 3.1 Flash Lite leads 60.9 to 27.1.
- Phi 3 Mini 128k Instruct has downloadable open weights; the other is API-only.
Side by side
| Gemini 3.1 Flash Lite | Phi 3 Mini 128k Instruct | |
|---|---|---|
| Provider | Microsoft | |
| Noometry Index | 40.8 | 29.7 |
| Released | 2026-03-03 | 2024-04-23 |
| Weights | Proprietary | Open |
| Context window | 1.05M | — |
| Max output | 66K | — |
| Input $ / M tokens | $0.25 | — |
| Output $ / M tokens | $1.50 | — |
| Results tracked | 38 | 19 |
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Category by category
Coding Gemini 3.1 Flash Lite leads
Gemini 3.1 Flash Lite: 37.8 (#188), Phi 3 Mini 128k Instruct: 28.8 (#312)
| Benchmark | Gemini 3.1 Flash Lite | Phi 3 Mini 128k Instruct |
|---|---|---|
| LMArena Coding | 1400 | 1039 |
| LMArena WebDev | 1256 | — |
| SciCode | 41.9% | — |
| WeirdML | 52.2% | — |
| BigCodeBench Instruct | — | 29.6% |
| BigCodeBench Complete | — | 40.6% |
| ALE-Bench | 797.73 | — |
Agentic & Tool Use Not comparable
Gemini 3.1 Flash Lite: 30.2 (#79), Phi 3 Mini 128k Instruct: —
| Benchmark | Gemini 3.1 Flash Lite | Phi 3 Mini 128k Instruct |
|---|---|---|
| DeepResearch Bench | 37.3% | — |
Reasoning Gemini 3.1 Flash Lite leads
Gemini 3.1 Flash Lite: 22.9 (#186), Phi 3 Mini 128k Instruct: 19.6 (#256)
| Benchmark | Gemini 3.1 Flash Lite | Phi 3 Mini 128k Instruct |
|---|---|---|
| LMArena Hard Prompts | 1407 | 1028 |
| Kagi LLM Benchmark | 67.2% | — |
| NYT Connections (extended) | 8.2% | — |
| CritPt | 1.1% | — |
| Chess Puzzles | 25% | — |
| EnigmaEval | 3% | — |
| Thematic Generalization | 63.3% | — |
| DTBench | 76.8% | — |
| LMCA | 35% | — |
| Epoch Capabilities Index | 144.47 | — |
| ForecastBench | 54.4 | — |
Math Gemini 3.1 Flash Lite leads
Gemini 3.1 Flash Lite: 40.7 (#90), Phi 3 Mini 128k Instruct: 31.6 (#222)
| Benchmark | Gemini 3.1 Flash Lite | Phi 3 Mini 128k Instruct |
|---|---|---|
| LMArena Math | 1428 | 1089 |
| FrontierMath (Tiers 1-3) | 27.7% | — |
| OTIS Mock AIME 2024-2025 | 80% | — |
Knowledge Gemini 3.1 Flash Lite leads
Gemini 3.1 Flash Lite: 41.9 (#104), Phi 3 Mini 128k Instruct: 26.8 (#254)
| Benchmark | Gemini 3.1 Flash Lite | Phi 3 Mini 128k Instruct |
|---|---|---|
| LMArena Expert | 1398 | 984 |
| GPQA Diamond | 81.8% | — |
| Humanity's Last Exam | 8.6% | — |
| Vectara Hallucination Rate | 8.2% | — |
Multimodal Not comparable
Gemini 3.1 Flash Lite: 39.4 (#60), Phi 3 Mini 128k Instruct: —
| Benchmark | Gemini 3.1 Flash Lite | Phi 3 Mini 128k Instruct |
|---|---|---|
| LMArena Vision | 1240 | — |
Multilingual Gemini 3.1 Flash Lite leads
Gemini 3.1 Flash Lite: 52.3 (#86), Phi 3 Mini 128k Instruct: 25.2 (#285)
| Benchmark | Gemini 3.1 Flash Lite | Phi 3 Mini 128k Instruct |
|---|---|---|
| LMArena Non-English | 1411 | 1000 |
| LMArena Chinese | 1461 | 1016 |
| LMArena French | 1424 | 1039 |
| LMArena German | 1429 | 1006 |
| LMArena Japanese | 1413 | 899 |
| LMArena Korean | 1392 | 856 |
| LMArena Russian | 1420 | 1004 |
| LMArena Spanish | 1421 | 1059 |
Instruction Following Gemini 3.1 Flash Lite leads
Gemini 3.1 Flash Lite: 72.7 (#131), Phi 3 Mini 128k Instruct: 51.8 (#294)
| Benchmark | Gemini 3.1 Flash Lite | Phi 3 Mini 128k Instruct |
|---|---|---|
| LMArena Instruction Following | 1377 | 1023 |
Long Context Gemini 3.1 Flash Lite leads
Gemini 3.1 Flash Lite: 42.5 (#122), Phi 3 Mini 128k Instruct: 30.4 (#289)
| Benchmark | Gemini 3.1 Flash Lite | Phi 3 Mini 128k Instruct |
|---|---|---|
| LMArena Longer Query | 1394 | 996 |
Writing & Preference Gemini 3.1 Flash Lite leads
Gemini 3.1 Flash Lite: 60.9 (#94), Phi 3 Mini 128k Instruct: 27.1 (#301)
| Benchmark | Gemini 3.1 Flash Lite | Phi 3 Mini 128k Instruct |
|---|---|---|
| LMArena Text | 1416 | 1050 |
| LMArena Creative Writing | 1401 | 1024 |
| LMArena Multi-Turn | 1417 | 989 |
Frequently asked questions
Is Gemini 3.1 Flash Lite better than Phi 3 Mini 128k Instruct?
Gemini 3.1 Flash Lite is the stronger model overall, scoring 40.8 to 29.7 on the Noometry Index.
Is Gemini 3.1 Flash Lite or Phi 3 Mini 128k Instruct better for coding?
Gemini 3.1 Flash Lite scores higher on coding benchmarks: 37.8 versus 28.8 in the Noometry coding category.
How many benchmarks do Gemini 3.1 Flash Lite and Phi 3 Mini 128k Instruct share?
17 benchmarks have published results for both models. Gemini 3.1 Flash Lite has 38 scored results on Noometry and Phi 3 Mini 128k Instruct has 19.