Model comparison
Gemini 3.5 Flash Lite vs GPT-5 Mini
Gemini 3.5 Flash Lite and GPT-5 Mini score almost the same on the Noometry Index (41.5 vs 41.8), so choose on price, context window or the category you care about most.
Last verified . 35 shared benchmarks.
GoogleSummary
- They share 35 benchmarks with published results for both. Gemini 3.5 Flash Lite scores higher in 7 categories and GPT-5 Mini in 3 categories; 10 gaps are clear of the uncertainty.
- The widest gap is in math, where GPT-5 Mini leads 46.7 to 25.9.
- The biggest single-benchmark swing is FrontierMath (Tiers 1-3): 26% for Gemini 3.5 Flash Lite and 46.7% for GPT-5 Mini.
- GPT-5 Mini is cheaper at $0.25 / $2 per million input/output tokens, against $0.30 / $2.50 for Gemini 3.5 Flash Lite.
- Gemini 3.5 Flash Lite accepts more context: 1.05M tokens versus 400K.
Side by side
| Gemini 3.5 Flash Lite | GPT-5 Mini | |
|---|---|---|
| Provider | OpenAI | |
| Noometry Index | 41.5 | 41.8 |
| Released | 2026-07-21 | 2025-08-07 |
| Weights | Proprietary | Proprietary |
| Context window | 1.05M | 400K |
| Max output | 66K | 128K |
| Input $ / M tokens | $0.30 | $0.25 |
| Output $ / M tokens | $2.50 | $2 |
| Results tracked | 39 | 60 |
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Category by category
Coding Gemini 3.5 Flash Lite leads
Gemini 3.5 Flash Lite: 42.4 (#104), GPT-5 Mini: 40.1 (#146)
| Benchmark | Gemini 3.5 Flash Lite | GPT-5 Mini |
|---|---|---|
| SciCode | 41.3% | 39.2% |
| WeirdML | 39% | 52.7% |
| LMArena Coding | 1453 | 1406 |
| ALE-Bench | 765.27 | 799.77 |
| SWE-bench Verified | — | 64.7% |
| SWE-bench Verified (bash only) | — | 59.8% |
| LMArena WebDev | 1440 | — |
| SWE-bench Multilingual | — | 39.7% |
| AlgoTune | — | 1.38 |
Agentic & Tool Use GPT-5 Mini leads
Gemini 3.5 Flash Lite: 25.7 (#107), GPT-5 Mini: 31.1 (#70)
| Benchmark | Gemini 3.5 Flash Lite | GPT-5 Mini |
|---|---|---|
| Terminal-Bench | — | 34.8% |
| APEX-Agents | 29.3% | — |
| Berkeley Function Calling Leaderboard | — | 55.5% |
| GDP.pdf | 10% | — |
| Vending-Bench 2 | — | -31.18 |
Reasoning Gemini 3.5 Flash Lite leads
Gemini 3.5 Flash Lite: 27.8 (#114), GPT-5 Mini: 23.9 (#168)
| Benchmark | Gemini 3.5 Flash Lite | GPT-5 Mini |
|---|---|---|
| ARC-AGI-2 | 10.3% | 4.4% |
| ARC-AGI-1 | 53.5% | 54.3% |
| CritPt | 0% | 0% |
| Chess Puzzles | 22% | 30% |
| LMArena Hard Prompts | 1441 | 1380 |
| Mystery Game Puzzles | 19% | 10% |
| DTBench | 83.5% | 80.5% |
| LMCA | 37.6% | 34.2% |
| Epoch Capabilities Index | 145.13 | 145.52 |
| Kagi LLM Benchmark | — | 70.3% |
| NYT Connections (extended) | 60.4% | — |
| EnigmaEval | — | 8.2% |
| ForecastBench | — | 61 |
Math GPT-5 Mini leads
Gemini 3.5 Flash Lite: 25.9 (#264), GPT-5 Mini: 46.7 (#69)
| Benchmark | Gemini 3.5 Flash Lite | GPT-5 Mini |
|---|---|---|
| FrontierMath (Tiers 1-3) | 26% | 46.7% |
| FrontierMath Tier 4 | 0% | 12.2% |
| OTIS Mock AIME 2024-2025 | 71.1% | 86.7% |
| ProofBench | 13% | 9% |
| LMArena Math | 1433 | 1378 |
| Omni-MATH | — | 72.2% |
| MATH Level 5 | — | 97.8% |
| FrontierMath (Feb 2025 set) | — | 27.2% |
| FrontierMath Tier 4 (v1) | — | 6.3% |
Knowledge Gemini 3.5 Flash Lite leads
Gemini 3.5 Flash Lite: 50.1 (#72), GPT-5 Mini: 45.6 (#86)
| Benchmark | Gemini 3.5 Flash Lite | GPT-5 Mini |
|---|---|---|
| GPQA Diamond | 83.3% | 75% |
| LMArena Expert | 1435 | 1379 |
| Humanity's Last Exam | — | 19.4% |
| SimpleQA Verified | — | 21.6% |
| MMLU-Pro | — | 83.5% |
| Confabulations | — | 13.3% |
| Vectara Hallucination Rate | — | 12.9% |
| GPQA (HELM) | — | 75.6% |
Multimodal Gemini 3.5 Flash Lite leads
Gemini 3.5 Flash Lite: 41.1 (#40), GPT-5 Mini: 35.6 (#85)
| Benchmark | Gemini 3.5 Flash Lite | GPT-5 Mini |
|---|---|---|
| LMArena Vision | 1268 | 1202 |
| VPCT | — | 40.2% |
Multilingual Gemini 3.5 Flash Lite leads
Gemini 3.5 Flash Lite: 53.5 (#63), GPT-5 Mini: 48.9 (#137)
| Benchmark | Gemini 3.5 Flash Lite | GPT-5 Mini |
|---|---|---|
| LMArena Non-English | 1427 | 1363 |
| LMArena Chinese | 1469 | 1385 |
| LMArena French | 1451 | 1386 |
| LMArena German | 1454 | 1366 |
| LMArena Japanese | 1427 | 1341 |
| LMArena Korean | 1407 | 1308 |
| LMArena Russian | 1443 | 1362 |
| LMArena Spanish | 1442 | 1355 |
Instruction Following GPT-5 Mini leads
Gemini 3.5 Flash Lite: 74.8 (#85), GPT-5 Mini: 76.2 (#46)
| Benchmark | Gemini 3.5 Flash Lite | GPT-5 Mini |
|---|---|---|
| LMArena Instruction Following | 1420 | 1357 |
| IFEval | — | 92.7% |
Long Context Gemini 3.5 Flash Lite leads
Gemini 3.5 Flash Lite: 43.9 (#84), GPT-5 Mini: 41.9 (#132)
| Benchmark | Gemini 3.5 Flash Lite | GPT-5 Mini |
|---|---|---|
| LMArena Longer Query | 1435 | 1355 |
| Fiction.LiveBench | — | 69.4% |
Writing & Preference Gemini 3.5 Flash Lite leads
Gemini 3.5 Flash Lite: 64.2 (#57), GPT-5 Mini: 55.2 (#148)
| Benchmark | Gemini 3.5 Flash Lite | GPT-5 Mini |
|---|---|---|
| LMArena Text | 1435 | 1373 |
| LMArena Creative Writing | 1420 | 1325 |
| EQ-Bench Creative Writing | 1559 | 1313 |
| LMArena Multi-Turn | 1445 | 1363 |
| Short-Story Creative Writing | — | 83.1% |
| WildBench | — | 85.5% |
Frequently asked questions
Is Gemini 3.5 Flash Lite better than GPT-5 Mini?
Gemini 3.5 Flash Lite and GPT-5 Mini score almost the same on the Noometry Index (41.5 vs 41.8), so choose on price, context window or the category you care about most.
Which is cheaper, Gemini 3.5 Flash Lite or GPT-5 Mini?
GPT-5 Mini is cheaper. It lists at $0.25 per million input tokens and $2 per million output tokens; Gemini 3.5 Flash Lite lists at $0.30 and $2.50.
Is Gemini 3.5 Flash Lite or GPT-5 Mini better for coding?
Gemini 3.5 Flash Lite scores higher on coding benchmarks: 42.4 versus 40.1 in the Noometry coding category.
Which has the bigger context window?
Gemini 3.5 Flash Lite does, with 1.05M tokens against 400K.
How many benchmarks do Gemini 3.5 Flash Lite and GPT-5 Mini share?
35 benchmarks have published results for both models. Gemini 3.5 Flash Lite has 39 scored results on Noometry and GPT-5 Mini has 60.