Model comparison
Gemini 3.1 Flash Lite vs Gemini 3.5 Flash Lite
Gemini 3.1 Flash Lite and Gemini 3.5 Flash Lite score almost the same on the Noometry Index (40.8 vs 41.5), so choose on price, context window or the category you care about most.
Last verified . 31 shared benchmarks.
GoogleSummary
- They share 31 benchmarks with published results for both. Gemini 3.1 Flash Lite scores higher in 2 categories and Gemini 3.5 Flash Lite in 8 categories; 10 gaps are clear of the uncertainty.
- The widest gap is in math, where Gemini 3.1 Flash Lite leads 40.7 to 25.9.
- The biggest single-benchmark swing is NYT Connections (extended): 8.2% for Gemini 3.1 Flash Lite and 60.4% for Gemini 3.5 Flash Lite.
- Gemini 3.1 Flash Lite is cheaper at $0.25 / $1.50 per million input/output tokens, against $0.30 / $2.50 for Gemini 3.5 Flash Lite.
Side by side
| Gemini 3.1 Flash Lite | Gemini 3.5 Flash Lite | |
|---|---|---|
| Provider | ||
| Noometry Index | 40.8 | 41.5 |
| Released | 2026-03-03 | 2026-07-21 |
| Weights | Proprietary | Proprietary |
| Context window | 1.05M | 1.05M |
| Max output | 66K | 66K |
| Input $ / M tokens | $0.25 | $0.30 |
| Output $ / M tokens | $1.50 | $2.50 |
| Results tracked | 38 | 39 |
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Category by category
Coding Gemini 3.5 Flash Lite leads
Gemini 3.1 Flash Lite: 37.8 (#188), Gemini 3.5 Flash Lite: 42.4 (#104)
| Benchmark | Gemini 3.1 Flash Lite | Gemini 3.5 Flash Lite |
|---|---|---|
| LMArena WebDev | 1256 | 1440 |
| SciCode | 41.9% | 41.3% |
| WeirdML | 52.2% | 39% |
| LMArena Coding | 1400 | 1453 |
| ALE-Bench | 797.73 | 765.27 |
Agentic & Tool Use Gemini 3.1 Flash Lite leads
Gemini 3.1 Flash Lite: 30.2 (#79), Gemini 3.5 Flash Lite: 25.7 (#107)
| Benchmark | Gemini 3.1 Flash Lite | Gemini 3.5 Flash Lite |
|---|---|---|
| APEX-Agents | — | 29.3% |
| DeepResearch Bench | 37.3% | — |
| GDP.pdf | — | 10% |
Reasoning Gemini 3.5 Flash Lite leads
Gemini 3.1 Flash Lite: 22.9 (#186), Gemini 3.5 Flash Lite: 27.8 (#114)
| Benchmark | Gemini 3.1 Flash Lite | Gemini 3.5 Flash Lite |
|---|---|---|
| NYT Connections (extended) | 8.2% | 60.4% |
| CritPt | 1.1% | 0% |
| Chess Puzzles | 25% | 22% |
| LMArena Hard Prompts | 1407 | 1441 |
| DTBench | 76.8% | 83.5% |
| LMCA | 35% | 37.6% |
| Epoch Capabilities Index | 144.47 | 145.13 |
| ARC-AGI-2 | — | 10.3% |
| Kagi LLM Benchmark | 67.2% | — |
| ARC-AGI-1 | — | 53.5% |
| EnigmaEval | 3% | — |
| Thematic Generalization | 63.3% | — |
| Mystery Game Puzzles | — | 19% |
| ForecastBench | 54.4 | — |
Math Gemini 3.1 Flash Lite leads
Gemini 3.1 Flash Lite: 40.7 (#90), Gemini 3.5 Flash Lite: 25.9 (#264)
| Benchmark | Gemini 3.1 Flash Lite | Gemini 3.5 Flash Lite |
|---|---|---|
| FrontierMath (Tiers 1-3) | 27.7% | 26% |
| OTIS Mock AIME 2024-2025 | 80% | 71.1% |
| LMArena Math | 1428 | 1433 |
| FrontierMath Tier 4 | — | 0% |
| ProofBench | — | 13% |
Knowledge Gemini 3.5 Flash Lite leads
Gemini 3.1 Flash Lite: 41.9 (#104), Gemini 3.5 Flash Lite: 50.1 (#72)
| Benchmark | Gemini 3.1 Flash Lite | Gemini 3.5 Flash Lite |
|---|---|---|
| GPQA Diamond | 81.8% | 83.3% |
| LMArena Expert | 1398 | 1435 |
| Humanity's Last Exam | 8.6% | — |
| Vectara Hallucination Rate | 8.2% | — |
Multimodal Gemini 3.5 Flash Lite leads
Gemini 3.1 Flash Lite: 39.4 (#60), Gemini 3.5 Flash Lite: 41.1 (#40)
| Benchmark | Gemini 3.1 Flash Lite | Gemini 3.5 Flash Lite |
|---|---|---|
| LMArena Vision | 1240 | 1268 |
Multilingual Gemini 3.5 Flash Lite leads
Gemini 3.1 Flash Lite: 52.3 (#86), Gemini 3.5 Flash Lite: 53.5 (#63)
| Benchmark | Gemini 3.1 Flash Lite | Gemini 3.5 Flash Lite |
|---|---|---|
| LMArena Non-English | 1411 | 1427 |
| LMArena Chinese | 1461 | 1469 |
| LMArena French | 1424 | 1451 |
| LMArena German | 1429 | 1454 |
| LMArena Japanese | 1413 | 1427 |
| LMArena Korean | 1392 | 1407 |
| LMArena Russian | 1420 | 1443 |
| LMArena Spanish | 1421 | 1442 |
Instruction Following Gemini 3.5 Flash Lite leads
Gemini 3.1 Flash Lite: 72.7 (#131), Gemini 3.5 Flash Lite: 74.8 (#85)
| Benchmark | Gemini 3.1 Flash Lite | Gemini 3.5 Flash Lite |
|---|---|---|
| LMArena Instruction Following | 1377 | 1420 |
Long Context Gemini 3.5 Flash Lite leads
Gemini 3.1 Flash Lite: 42.5 (#122), Gemini 3.5 Flash Lite: 43.9 (#84)
| Benchmark | Gemini 3.1 Flash Lite | Gemini 3.5 Flash Lite |
|---|---|---|
| LMArena Longer Query | 1394 | 1435 |
Writing & Preference Gemini 3.5 Flash Lite leads
Gemini 3.1 Flash Lite: 60.9 (#94), Gemini 3.5 Flash Lite: 64.2 (#57)
| Benchmark | Gemini 3.1 Flash Lite | Gemini 3.5 Flash Lite |
|---|---|---|
| LMArena Text | 1416 | 1435 |
| LMArena Creative Writing | 1401 | 1420 |
| LMArena Multi-Turn | 1417 | 1445 |
| EQ-Bench Creative Writing | — | 1559 |
Frequently asked questions
Is Gemini 3.1 Flash Lite better than Gemini 3.5 Flash Lite?
Gemini 3.1 Flash Lite and Gemini 3.5 Flash Lite score almost the same on the Noometry Index (40.8 vs 41.5), so choose on price, context window or the category you care about most.
Which is cheaper, Gemini 3.1 Flash Lite or Gemini 3.5 Flash Lite?
Gemini 3.1 Flash Lite is cheaper. It lists at $0.25 per million input tokens and $1.50 per million output tokens; Gemini 3.5 Flash Lite lists at $0.30 and $2.50.
Is Gemini 3.1 Flash Lite or Gemini 3.5 Flash Lite better for coding?
Gemini 3.5 Flash Lite scores higher on coding benchmarks: 42.4 versus 37.8 in the Noometry coding category.
Which has the bigger context window?
Both accept 1.05M tokens.
How many benchmarks do Gemini 3.1 Flash Lite and Gemini 3.5 Flash Lite share?
31 benchmarks have published results for both models. Gemini 3.1 Flash Lite has 38 scored results on Noometry and Gemini 3.5 Flash Lite has 39.