Model comparison
Gemini 1.5 Flash 8B vs Gemini 3.1 Flash Lite
Gemini 3.1 Flash Lite is the stronger model overall, scoring 40.8 to 29.9 on the Noometry Index.
Last verified . 21 shared benchmarks.
GoogleSummary
- They share 21 benchmarks with published results for both. Gemini 1.5 Flash 8B scores higher in 0 categories and Gemini 3.1 Flash Lite in 9 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in math, where Gemini 3.1 Flash Lite leads 40.7 to 14.2.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 4.6% for Gemini 1.5 Flash 8B and 80% for Gemini 3.1 Flash Lite.
Side by side
| Gemini 1.5 Flash 8B | Gemini 3.1 Flash Lite | |
|---|---|---|
| Provider | ||
| Noometry Index | 29.9 | 40.8 |
| Released | 2024-10-03 | 2026-03-03 |
| Weights | Proprietary | Proprietary |
| Context window | — | 1.05M |
| Max output | — | 66K |
| Input $ / M tokens | — | $0.25 |
| Output $ / M tokens | — | $1.50 |
| Results tracked | 21 | 38 |
Sponsored placements are available on pages like this one. Advertise on Noometry
Category by category
Coding Gemini 3.1 Flash Lite leads
Gemini 1.5 Flash 8B: 35.5 (#225), Gemini 3.1 Flash Lite: 37.8 (#188)
| Benchmark | Gemini 1.5 Flash 8B | Gemini 3.1 Flash Lite |
|---|---|---|
| LMArena Coding | 1218 | 1400 |
| LMArena WebDev | — | 1256 |
| SciCode | — | 41.9% |
| WeirdML | — | 52.2% |
| ALE-Bench | — | 797.73 |
Agentic & Tool Use Not comparable
Gemini 1.5 Flash 8B: —, Gemini 3.1 Flash Lite: 30.2 (#79)
| Benchmark | Gemini 1.5 Flash 8B | Gemini 3.1 Flash Lite |
|---|---|---|
| DeepResearch Bench | — | 37.3% |
Reasoning Gemini 3.1 Flash Lite leads
Gemini 1.5 Flash 8B: 20.0 (#244), Gemini 3.1 Flash Lite: 22.9 (#186)
| Benchmark | Gemini 1.5 Flash 8B | Gemini 3.1 Flash Lite |
|---|---|---|
| LMArena Hard Prompts | 1209 | 1407 |
| DTBench | 50% | 76.8% |
| Kagi LLM Benchmark | — | 67.2% |
| NYT Connections (extended) | — | 8.2% |
| CritPt | — | 1.1% |
| Chess Puzzles | — | 25% |
| EnigmaEval | — | 3% |
| Thematic Generalization | — | 63.3% |
| LMCA | — | 35% |
| Epoch Capabilities Index | — | 144.47 |
| ForecastBench | — | 54.4 |
Math Gemini 3.1 Flash Lite leads
Gemini 1.5 Flash 8B: 14.2 (#302), Gemini 3.1 Flash Lite: 40.7 (#90)
| Benchmark | Gemini 1.5 Flash 8B | Gemini 3.1 Flash Lite |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 4.6% | 80% |
| LMArena Math | 1207 | 1428 |
| FrontierMath (Tiers 1-3) | — | 27.7% |
Knowledge Gemini 3.1 Flash Lite leads
Gemini 1.5 Flash 8B: 16.0 (#289), Gemini 3.1 Flash Lite: 41.9 (#104)
| Benchmark | Gemini 1.5 Flash 8B | Gemini 3.1 Flash Lite |
|---|---|---|
| GPQA Diamond | 33% | 81.8% |
| LMArena Expert | 1185 | 1398 |
| Humanity's Last Exam | — | 8.6% |
| Vectara Hallucination Rate | — | 8.2% |
Multimodal Gemini 3.1 Flash Lite leads
Gemini 1.5 Flash 8B: 28.2 (#115), Gemini 3.1 Flash Lite: 39.4 (#60)
| Benchmark | Gemini 1.5 Flash 8B | Gemini 3.1 Flash Lite |
|---|---|---|
| LMArena Vision | 1044 | 1240 |
Multilingual Gemini 3.1 Flash Lite leads
Gemini 1.5 Flash 8B: 38.5 (#229), Gemini 3.1 Flash Lite: 52.3 (#86)
| Benchmark | Gemini 1.5 Flash 8B | Gemini 3.1 Flash Lite |
|---|---|---|
| LMArena Non-English | 1215 | 1411 |
| LMArena Chinese | 1231 | 1461 |
| LMArena French | 1234 | 1424 |
| LMArena German | 1206 | 1429 |
| LMArena Japanese | 1150 | 1413 |
| LMArena Korean | 1140 | 1392 |
| LMArena Russian | 1236 | 1420 |
| LMArena Spanish | 1212 | 1421 |
Instruction Following Gemini 3.1 Flash Lite leads
Gemini 1.5 Flash 8B: 62.8 (#236), Gemini 3.1 Flash Lite: 72.7 (#131)
| Benchmark | Gemini 1.5 Flash 8B | Gemini 3.1 Flash Lite |
|---|---|---|
| LMArena Instruction Following | 1199 | 1377 |
Long Context Gemini 3.1 Flash Lite leads
Gemini 1.5 Flash 8B: 37.0 (#225), Gemini 3.1 Flash Lite: 42.5 (#122)
| Benchmark | Gemini 1.5 Flash 8B | Gemini 3.1 Flash Lite |
|---|---|---|
| LMArena Longer Query | 1219 | 1394 |
Writing & Preference Gemini 3.1 Flash Lite leads
Gemini 1.5 Flash 8B: 42.8 (#232), Gemini 3.1 Flash Lite: 60.9 (#94)
| Benchmark | Gemini 1.5 Flash 8B | Gemini 3.1 Flash Lite |
|---|---|---|
| LMArena Text | 1226 | 1416 |
| LMArena Creative Writing | 1218 | 1401 |
| LMArena Multi-Turn | 1185 | 1417 |
Frequently asked questions
Is Gemini 1.5 Flash 8B better than Gemini 3.1 Flash Lite?
Gemini 3.1 Flash Lite is the stronger model overall, scoring 40.8 to 29.9 on the Noometry Index.
Is Gemini 1.5 Flash 8B or Gemini 3.1 Flash Lite better for coding?
Gemini 3.1 Flash Lite scores higher on coding benchmarks: 37.8 versus 35.5 in the Noometry coding category.
How many benchmarks do Gemini 1.5 Flash 8B and Gemini 3.1 Flash Lite share?
21 benchmarks have published results for both models. Gemini 1.5 Flash 8B has 21 scored results on Noometry and Gemini 3.1 Flash Lite has 38.