Model comparison
Gemini 1.5 Flash (May 2024) vs Gemini 3.5 Flash Lite
Gemini 3.5 Flash Lite is the stronger model overall, scoring 41.5 to 33.2 on the Noometry Index.
Last verified . 23 shared benchmarks.
GoogleSummary
- They share 23 benchmarks with published results for both. Gemini 1.5 Flash (May 2024) scores higher in 1 category and Gemini 3.5 Flash Lite in 9 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Gemini 3.5 Flash Lite leads 50.1 to 26.2.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 16.3% for Gemini 1.5 Flash (May 2024) and 71.1% for Gemini 3.5 Flash Lite.
Side by side
| Gemini 1.5 Flash (May 2024) | Gemini 3.5 Flash Lite | |
|---|---|---|
| Provider | ||
| Noometry Index | 33.2 | 41.5 |
| Released | 2024-05-14 | 2026-07-21 |
| Weights | Proprietary | Proprietary |
| Context window | — | 1.05M |
| Max output | — | 66K |
| Input $ / M tokens | — | $0.30 |
| Output $ / M tokens | — | $2.50 |
| Results tracked | 42 | 39 |
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Category by category
Coding Gemini 3.5 Flash Lite leads
Gemini 1.5 Flash (May 2024): 34.4 (#236), Gemini 3.5 Flash Lite: 42.4 (#104)
| Benchmark | Gemini 1.5 Flash (May 2024) | Gemini 3.5 Flash Lite |
|---|---|---|
| WeirdML | 24.9% | 39% |
| LMArena Coding | 1261 | 1453 |
| LMArena WebDev | — | 1440 |
| SciCode | — | 41.3% |
| BigCodeBench Instruct | 43.5% | — |
| BigCodeBench Complete | 55.1% | — |
| ALE-Bench | — | 765.27 |
| HumanEval+ | 75.6% | — |
| MBPP+ | 67.5% | — |
Agentic & Tool Use Too close to call
Gemini 1.5 Flash (May 2024): 26.6 (#102), Gemini 3.5 Flash Lite: 25.7 (#107)
| Benchmark | Gemini 1.5 Flash (May 2024) | Gemini 3.5 Flash Lite |
|---|---|---|
| APEX-Agents | — | 29.3% |
| BALROG | 14.6% | — |
| GDP.pdf | — | 10% |
Reasoning Gemini 3.5 Flash Lite leads
Gemini 1.5 Flash (May 2024): 21.7 (#215), Gemini 3.5 Flash Lite: 27.8 (#114)
| Benchmark | Gemini 1.5 Flash (May 2024) | Gemini 3.5 Flash Lite |
|---|---|---|
| LMArena Hard Prompts | 1257 | 1441 |
| DTBench | 53.8% | 83.5% |
| Epoch Capabilities Index | 129.36 | 145.13 |
| ARC-AGI-2 | — | 10.3% |
| NYT Connections (extended) | — | 60.4% |
| ARC-AGI-1 | — | 53.5% |
| CritPt | — | 0% |
| Chess Puzzles | — | 22% |
| Mystery Game Puzzles | — | 19% |
| LMCA | — | 37.6% |
| ForecastBench | 53.9 | — |
| PIQA | 87.5% | — |
Math Gemini 3.5 Flash Lite leads
Gemini 1.5 Flash (May 2024): 22.1 (#281), Gemini 3.5 Flash Lite: 25.9 (#264)
| Benchmark | Gemini 1.5 Flash (May 2024) | Gemini 3.5 Flash Lite |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 16.3% | 71.1% |
| LMArena Math | 1269 | 1433 |
| FrontierMath (Tiers 1-3) | — | 26% |
| FrontierMath Tier 4 | — | 0% |
| ProofBench | — | 13% |
| Omni-MATH | 30.4% | — |
| MATH Level 5 | 61.9% | — |
| FrontierMath (Feb 2025 set) | 0% | — |
| GSM8K | 82.4% | — |
Knowledge Gemini 3.5 Flash Lite leads
Gemini 1.5 Flash (May 2024): 26.2 (#260), Gemini 3.5 Flash Lite: 50.1 (#72)
| Benchmark | Gemini 1.5 Flash (May 2024) | Gemini 3.5 Flash Lite |
|---|---|---|
| GPQA Diamond | 47.3% | 83.3% |
| LMArena Expert | 1233 | 1435 |
| MMLU-Pro | 67.8% | — |
| GPQA (HELM) | 43.7% | — |
| BoolQ | 85.8% | — |
| MMLU | 77.9% | — |
Multimodal Gemini 3.5 Flash Lite leads
Gemini 1.5 Flash (May 2024): 36.0 (#81), Gemini 3.5 Flash Lite: 41.1 (#40)
| Benchmark | Gemini 1.5 Flash (May 2024) | Gemini 3.5 Flash Lite |
|---|---|---|
| LMArena Vision | 1141 | 1268 |
| Video-MME | 70.3% | — |
| GeoBench | 76% | — |
Multilingual Gemini 3.5 Flash Lite leads
Gemini 1.5 Flash (May 2024): 42.9 (#189), Gemini 3.5 Flash Lite: 53.5 (#63)
| Benchmark | Gemini 1.5 Flash (May 2024) | Gemini 3.5 Flash Lite |
|---|---|---|
| LMArena Non-English | 1278 | 1427 |
| LMArena Chinese | 1295 | 1469 |
| LMArena French | 1258 | 1451 |
| LMArena German | 1262 | 1454 |
| LMArena Japanese | 1252 | 1427 |
| LMArena Korean | 1221 | 1407 |
| LMArena Russian | 1288 | 1443 |
| LMArena Spanish | 1243 | 1442 |
Instruction Following Gemini 3.5 Flash Lite leads
Gemini 1.5 Flash (May 2024): 66.8 (#205), Gemini 3.5 Flash Lite: 74.8 (#85)
| Benchmark | Gemini 1.5 Flash (May 2024) | Gemini 3.5 Flash Lite |
|---|---|---|
| LMArena Instruction Following | 1258 | 1420 |
| IFEval | 83.1% | — |
Long Context Gemini 3.5 Flash Lite leads
Gemini 1.5 Flash (May 2024): 39.0 (#187), Gemini 3.5 Flash Lite: 43.9 (#84)
| Benchmark | Gemini 1.5 Flash (May 2024) | Gemini 3.5 Flash Lite |
|---|---|---|
| LMArena Longer Query | 1284 | 1435 |
Writing & Preference Gemini 3.5 Flash Lite leads
Gemini 1.5 Flash (May 2024): 48.7 (#196), Gemini 3.5 Flash Lite: 64.2 (#57)
| Benchmark | Gemini 1.5 Flash (May 2024) | Gemini 3.5 Flash Lite |
|---|---|---|
| LMArena Text | 1287 | 1435 |
| LMArena Creative Writing | 1285 | 1420 |
| LMArena Multi-Turn | 1253 | 1445 |
| EQ-Bench Creative Writing | — | 1559 |
| WildBench | 79.2% | — |
Frequently asked questions
Is Gemini 1.5 Flash (May 2024) better than Gemini 3.5 Flash Lite?
Gemini 3.5 Flash Lite is the stronger model overall, scoring 41.5 to 33.2 on the Noometry Index.
Is Gemini 1.5 Flash (May 2024) or Gemini 3.5 Flash Lite better for coding?
Gemini 3.5 Flash Lite scores higher on coding benchmarks: 42.4 versus 34.4 in the Noometry coding category.
How many benchmarks do Gemini 1.5 Flash (May 2024) and Gemini 3.5 Flash Lite share?
23 benchmarks have published results for both models. Gemini 1.5 Flash (May 2024) has 42 scored results on Noometry and Gemini 3.5 Flash Lite has 39.