Model comparison
Gemini 3.5 Flash Lite vs GPT-4.5
Gemini 3.5 Flash Lite is the stronger model overall, scoring 41.8 to 36.9 on the Noometry Index.
Last verified . 24 shared benchmarks.
GoogleSummary
- They share 24 benchmarks with published results for both. Gemini 3.5 Flash Lite scores higher in 9 categories and GPT-4.5 in 1 category; 9 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Gemini 3.5 Flash Lite leads 50.0 to 32.4.
- The biggest single-benchmark swing is ARC-AGI-1: 53.5% for Gemini 3.5 Flash Lite and 10.3% for GPT-4.5.
Side by side
| Gemini 3.5 Flash Lite | GPT-4.5 | |
|---|---|---|
| Provider | OpenAI | |
| Noometry Index | 41.8 | 36.9 |
| Released | 2026-07-21 | 2025-02-27 |
| Weights | Proprietary | Proprietary |
| Context window | 1.05M | — |
| Max output | 66K | — |
| Input $ / M tokens | $0.30 | — |
| Output $ / M tokens | $2.50 | — |
| Results tracked | 38 | 42 |
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Category by category
Coding Too close to call
Gemini 3.5 Flash Lite: 42.1 (#96), GPT-4.5: 41.8 (#102)
| Benchmark | Gemini 3.5 Flash Lite | GPT-4.5 |
|---|---|---|
| WeirdML | 39% | 39.4% |
| LMArena Coding | 1455 | 1397 |
| Aider Polyglot | — | 44.9% |
| LMArena WebDev | 1440 | — |
| SciCode | 41.3% | — |
| LiveBench Coding | — | 75.2% |
| ALE-Bench | 765.27 | — |
Agentic & Tool Use Gemini 3.5 Flash Lite leads
Gemini 3.5 Flash Lite: 28.6 (#82), GPT-4.5: 27.6 (#92)
Reasoning Gemini 3.5 Flash Lite leads
Gemini 3.5 Flash Lite: 27.8 (#95), GPT-4.5: 14.1 (#320)
| Benchmark | Gemini 3.5 Flash Lite | GPT-4.5 |
|---|---|---|
| ARC-AGI-2 | 10.3% | 0.8% |
| ARC-AGI-1 | 53.5% | 10.3% |
| LMArena Hard Prompts | 1441 | 1404 |
| Epoch Capabilities Index | 145.12 | 136.74 |
| SimpleBench | — | 34.5% |
| NYT Connections (extended) | 60.4% | — |
| CritPt | 0% | — |
| Chess Puzzles | 22% | — |
| EnigmaEval | — | 3.2% |
| LiveBench Reasoning | — | 71.1% |
| Mystery Game Puzzles | 19% | — |
| DTBench | 83.5% | — |
| LiveBench Data Analysis | — | 64.3% |
| LMCA | 37.6% | — |
| ForecastBench | — | 61.7 |
| LiveBench | — | 69% |
Math GPT-4.5 leads
Gemini 3.5 Flash Lite: 25.7 (#245), GPT-4.5: 31.0 (#200)
| Benchmark | Gemini 3.5 Flash Lite | GPT-4.5 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 71.1% | 37.8% |
| LMArena Math | 1431 | 1412 |
| FrontierMath (Tiers 1-3) | 26% | — |
| FrontierMath Tier 4 | 0% | — |
| ProofBench | 13% | — |
| LiveBench Math | — | 69.3% |
| MATH Level 5 | — | 78.6% |
Knowledge Gemini 3.5 Flash Lite leads
Gemini 3.5 Flash Lite: 50.0 (#66), GPT-4.5: 32.4 (#205)
| Benchmark | Gemini 3.5 Flash Lite | GPT-4.5 |
|---|---|---|
| GPQA Diamond | 83.3% | 68.7% |
| LMArena Expert | 1430 | 1394 |
| Humanity's Last Exam | — | 5.4% |
| Confabulations | — | 13.6% |
Multimodal Gemini 3.5 Flash Lite leads
Gemini 3.5 Flash Lite: 40.3 (#38), GPT-4.5: 37.0 (#68)
| Benchmark | Gemini 3.5 Flash Lite | GPT-4.5 |
|---|---|---|
| LMArena Vision | 1266 | 1195 |
| VPCT | — | 45% |
Multilingual Gemini 3.5 Flash Lite leads
Gemini 3.5 Flash Lite: 53.8 (#59), GPT-4.5: 52.7 (#78)
| Benchmark | Gemini 3.5 Flash Lite | GPT-4.5 |
|---|---|---|
| LMArena Non-English | 1428 | 1413 |
| LMArena Chinese | 1467 | 1421 |
| LMArena French | 1452 | 1417 |
| LMArena German | 1454 | 1457 |
| LMArena Japanese | 1428 | 1416 |
| LMArena Korean | 1406 | 1392 |
| LMArena Russian | 1443 | 1419 |
| LMArena Spanish | 1440 | — |
Instruction Following Gemini 3.5 Flash Lite leads
Gemini 3.5 Flash Lite: 75.0 (#77), GPT-4.5: 72.8 (#129)
| Benchmark | Gemini 3.5 Flash Lite | GPT-4.5 |
|---|---|---|
| LMArena Instruction Following | 1420 | 1404 |
| LiveBench Instruction Following | — | 72.3% |
Long Context Gemini 3.5 Flash Lite leads
Gemini 3.5 Flash Lite: 43.8 (#80), GPT-4.5: 40.4 (#150)
| Benchmark | Gemini 3.5 Flash Lite | GPT-4.5 |
|---|---|---|
| LMArena Longer Query | 1435 | 1406 |
| Fiction.LiveBench | — | 63.9% |
Writing & Preference Gemini 3.5 Flash Lite leads
Gemini 3.5 Flash Lite: 64.4 (#55), GPT-4.5: 57.1 (#129)
| Benchmark | Gemini 3.5 Flash Lite | GPT-4.5 |
|---|---|---|
| LMArena Text | 1436 | 1417 |
| LMArena Creative Writing | 1419 | 1394 |
| EQ-Bench Creative Writing | 1559 | 1258 |
| LMArena Multi-Turn | 1445 | 1444 |
| Short-Story Creative Writing | — | 75.6% |
| LiveBench Language | — | 61.5% |
Frequently asked questions
Is Gemini 3.5 Flash Lite better than GPT-4.5?
Gemini 3.5 Flash Lite is the stronger model overall, scoring 41.8 to 36.9 on the Noometry Index.
Is Gemini 3.5 Flash Lite or GPT-4.5 better for coding?
They score almost the same on coding (42.1 vs 41.8); test both on your own repository before choosing.
How many benchmarks do Gemini 3.5 Flash Lite and GPT-4.5 share?
24 benchmarks have published results for both models. Gemini 3.5 Flash Lite has 38 scored results on Noometry and GPT-4.5 has 42.