Model comparison
Gemini 2.0 Flash-Lite vs GPT-5.1
GPT-5.1 is the stronger model overall, scoring 48.8 to 37.3 on the Noometry Index.
Last verified . 32 shared benchmarks.
GoogleSummary
- They share 32 benchmarks with published results for both. Gemini 2.0 Flash-Lite scores higher in 0 categories and GPT-5.1 in 9 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where GPT-5.1 leads 39.9 to 21.2.
- The biggest single-benchmark swing is LiveBench Language: 34.3% for Gemini 2.0 Flash-Lite and 80.2% for GPT-5.1.
Side by side
| Gemini 2.0 Flash-Lite | GPT-5.1 | |
|---|---|---|
| Provider | OpenAI | |
| Noometry Index | 37.3 | 48.8 |
| Released | 2025-02-05 | 2025-11-13 |
| Weights | Proprietary | Proprietary |
| Context window | — | 400K |
| Max output | — | 128K |
| Input $ / M tokens | — | $1.25 |
| Output $ / M tokens | — | $10 |
| Results tracked | 32 | 63 |
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Category by category
Coding GPT-5.1 leads
Gemini 2.0 Flash-Lite: 37.4 (#181), GPT-5.1: 46.9 (#59)
| Benchmark | Gemini 2.0 Flash-Lite | GPT-5.1 |
|---|---|---|
| LiveBench Coding | 47.1% | 72.5% |
| LMArena Coding | 1322 | 1454 |
| SWE-bench Verified | — | 68% |
| SWE-bench Verified (bash only) | — | 66% |
| LMArena WebDev | — | 1395 |
| SciCode | — | 43.3% |
| GSO | — | 13.7% |
| WeirdML | — | 60.8% |
| ALE-Bench | — | 1,192 |
Agentic & Tool Use Not comparable
Gemini 2.0 Flash-Lite: —, GPT-5.1: 32.5 (#55)
| Benchmark | Gemini 2.0 Flash-Lite | GPT-5.1 |
|---|---|---|
| Terminal-Bench | — | 47.6% |
| DeepResearch Bench | — | 42.8% |
| LMArena Search | — | 1199 |
| Vending-Bench 2 | — | 1,473 |
Reasoning GPT-5.1 leads
Gemini 2.0 Flash-Lite: 21.2 (#203), GPT-5.1: 39.9 (#50)
| Benchmark | Gemini 2.0 Flash-Lite | GPT-5.1 |
|---|---|---|
| LiveBench Reasoning | 50.1% | 95.8% |
| LMArena Hard Prompts | 1324 | 1457 |
| DTBench | 52.5% | 90.1% |
| LiveBench Data Analysis | 65.5% | 72.1% |
| ForecastBench | 57.1 | 58.1 |
| LiveBench | 54.3% | 78.8% |
| ARC-AGI-2 | — | 17.6% |
| SimpleBench | — | 53.2% |
| ARC-AGI-1 | — | 72.8% |
| CritPt | — | 4.9% |
| Chess Puzzles | — | 32% |
| EnigmaEval | — | 11.2% |
| Mystery Game Puzzles | — | 19% |
| LMCA | — | 43.9% |
| Epoch Capabilities Index | — | 149.66 |
Math GPT-5.1 leads
Gemini 2.0 Flash-Lite: 31.8 (#192), GPT-5.1: 50.3 (#45)
| Benchmark | Gemini 2.0 Flash-Lite | GPT-5.1 |
|---|---|---|
| Omni-MATH | 37.4% | 46.4% |
| LiveBench Math | 58.1% | 94.5% |
| LMArena Math | 1309 | 1446 |
| OTIS Mock AIME 2024-2025 | — | 88.6% |
| FrontierMath (Feb 2025 set) | — | 31% |
| FrontierMath Tier 4 (v1) | — | 12.5% |
Knowledge GPT-5.1 leads
Gemini 2.0 Flash-Lite: 34.6 (#185), GPT-5.1: 50.5 (#65)
| Benchmark | Gemini 2.0 Flash-Lite | GPT-5.1 |
|---|---|---|
| MMLU-Pro | 72% | 57.9% |
| GPQA (HELM) | 50% | 44.2% |
| LMArena Expert | 1305 | 1470 |
| GPQA Diamond | — | 87.6% |
| Humanity's Last Exam | — | 23.7% |
| SimpleQA Verified | — | 48% |
| Vectara Hallucination Rate | — | 10.9% |
Multimodal GPT-5.1 leads
Gemini 2.0 Flash-Lite: 30.6 (#103), GPT-5.1: 44.0 (#17)
| Benchmark | Gemini 2.0 Flash-Lite | GPT-5.1 |
|---|---|---|
| LMArena Vision | 1100 | 1250 |
| VPCT | — | 58.7% |
| LMArena Document | — | 1403 |
Multilingual GPT-5.1 leads
Gemini 2.0 Flash-Lite: 46.2 (#156), GPT-5.1: 54.0 (#51)
| Benchmark | Gemini 2.0 Flash-Lite | GPT-5.1 |
|---|---|---|
| LMArena Non-English | 1323 | 1431 |
| LMArena Chinese | 1339 | 1495 |
| LMArena French | 1346 | 1451 |
| LMArena German | 1306 | 1439 |
| LMArena Japanese | 1302 | 1453 |
| LMArena Korean | 1325 | 1401 |
| LMArena Russian | 1328 | 1435 |
| LMArena Spanish | 1313 | 1430 |
Instruction Following GPT-5.1 leads
Gemini 2.0 Flash-Lite: 70.6 (#158), GPT-5.1: 84.0 (#1)
| Benchmark | Gemini 2.0 Flash-Lite | GPT-5.1 |
|---|---|---|
| LiveBench Instruction Following | 78.3% | 93.3% |
| IFEval | 82.4% | 93.5% |
| LMArena Instruction Following | 1305 | 1442 |
Long Context GPT-5.1 leads
Gemini 2.0 Flash-Lite: 40.1 (#155), GPT-5.1: 47.6 (#14)
| Benchmark | Gemini 2.0 Flash-Lite | GPT-5.1 |
|---|---|---|
| LMArena Longer Query | 1321 | 1448 |
| CL-bench | — | 23.7% |
| CL-bench Life | — | 17.3% |
Writing & Preference GPT-5.1 leads
Gemini 2.0 Flash-Lite: 51.9 (#172), GPT-5.1: 64.7 (#53)
| Benchmark | Gemini 2.0 Flash-Lite | GPT-5.1 |
|---|---|---|
| LMArena Text | 1330 | 1443 |
| LMArena Creative Writing | 1319 | 1427 |
| WildBench | 79% | 86.3% |
| LMArena Multi-Turn | 1307 | 1449 |
| LiveBench Language | 34.3% | 80.2% |
Frequently asked questions
Is Gemini 2.0 Flash-Lite better than GPT-5.1?
GPT-5.1 is the stronger model overall, scoring 48.8 to 37.3 on the Noometry Index.
Is Gemini 2.0 Flash-Lite or GPT-5.1 better for coding?
GPT-5.1 scores higher on coding benchmarks: 46.9 versus 37.4 in the Noometry coding category.
How many benchmarks do Gemini 2.0 Flash-Lite and GPT-5.1 share?
32 benchmarks have published results for both models. Gemini 2.0 Flash-Lite has 32 scored results on Noometry and GPT-5.1 has 63.