Model comparison
Gemini 1.5 Flash (May 2024) vs GPT-4.5
GPT-4.5 is the stronger model overall, scoring 37.2 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 GPT-4.5 in 9 categories; 10 gaps are clear of the uncertainty.
- The widest gap is in math, where GPT-4.5 leads 32.6 to 22.1.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 16.3% for Gemini 1.5 Flash (May 2024) and 37.8% for GPT-4.5.
Side by side
| Gemini 1.5 Flash (May 2024) | GPT-4.5 | |
|---|---|---|
| Provider | OpenAI | |
| Noometry Index | 33.2 | 37.2 |
| Released | 2024-05-14 | 2025-02-27 |
| Weights | Proprietary | Proprietary |
| Context window | — | — |
| Max output | — | — |
| Input $ / M tokens | — | — |
| Output $ / M tokens | — | — |
| Results tracked | 42 | 42 |
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Category by category
Coding GPT-4.5 leads
Gemini 1.5 Flash (May 2024): 34.4 (#236), GPT-4.5: 42.2 (#109)
| Benchmark | Gemini 1.5 Flash (May 2024) | GPT-4.5 |
|---|---|---|
| WeirdML | 24.9% | 39.4% |
| LMArena Coding | 1261 | 1396 |
| Aider Polyglot | — | 44.9% |
| BigCodeBench Instruct | 43.5% | — |
| LiveBench Coding | — | 75.2% |
| BigCodeBench Complete | 55.1% | — |
| HumanEval+ | 75.6% | — |
| MBPP+ | 67.5% | — |
Agentic & Tool Use GPT-4.5 leads
Gemini 1.5 Flash (May 2024): 26.6 (#102), GPT-4.5: 27.9 (#97)
Reasoning Gemini 1.5 Flash (May 2024) leads
Gemini 1.5 Flash (May 2024): 21.7 (#215), GPT-4.5: 13.9 (#330)
| Benchmark | Gemini 1.5 Flash (May 2024) | GPT-4.5 |
|---|---|---|
| LMArena Hard Prompts | 1257 | 1403 |
| Epoch Capabilities Index | 129.36 | 136.74 |
| ForecastBench | 53.9 | 61.7 |
| ARC-AGI-2 | — | 0.8% |
| SimpleBench | — | 34.5% |
| ARC-AGI-1 | — | 10.3% |
| EnigmaEval | — | 3.2% |
| LiveBench Reasoning | — | 71.1% |
| DTBench | 53.8% | — |
| LiveBench Data Analysis | — | 64.3% |
| LiveBench | — | 69% |
| PIQA | 87.5% | — |
Math GPT-4.5 leads
Gemini 1.5 Flash (May 2024): 22.1 (#281), GPT-4.5: 32.6 (#211)
| Benchmark | Gemini 1.5 Flash (May 2024) | GPT-4.5 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 16.3% | 37.8% |
| LMArena Math | 1269 | 1412 |
| MATH Level 5 | 61.9% | 78.6% |
| Omni-MATH | 30.4% | — |
| LiveBench Math | — | 69.3% |
| FrontierMath (Feb 2025 set) | 0% | — |
| GSM8K | 82.4% | — |
Knowledge GPT-4.5 leads
Gemini 1.5 Flash (May 2024): 26.2 (#260), GPT-4.5: 32.5 (#211)
| Benchmark | Gemini 1.5 Flash (May 2024) | GPT-4.5 |
|---|---|---|
| GPQA Diamond | 47.3% | 68.7% |
| LMArena Expert | 1233 | 1394 |
| Humanity's Last Exam | — | 5.4% |
| MMLU-Pro | 67.8% | — |
| Confabulations | — | 13.6% |
| GPQA (HELM) | 43.7% | — |
| BoolQ | 85.8% | — |
| MMLU | 77.9% | — |
Multimodal GPT-4.5 leads
Gemini 1.5 Flash (May 2024): 36.0 (#81), GPT-4.5: 37.6 (#71)
| Benchmark | Gemini 1.5 Flash (May 2024) | GPT-4.5 |
|---|---|---|
| LMArena Vision | 1141 | 1195 |
| Video-MME | 70.3% | — |
| GeoBench | 76% | — |
| VPCT | — | 45% |
Multilingual GPT-4.5 leads
Gemini 1.5 Flash (May 2024): 42.9 (#189), GPT-4.5: 52.5 (#83)
| Benchmark | Gemini 1.5 Flash (May 2024) | GPT-4.5 |
|---|---|---|
| LMArena Non-English | 1278 | 1413 |
| LMArena Chinese | 1295 | 1421 |
| LMArena French | 1258 | 1418 |
| LMArena German | 1262 | 1457 |
| LMArena Japanese | 1252 | 1416 |
| LMArena Korean | 1221 | 1392 |
| LMArena Russian | 1288 | 1419 |
| LMArena Spanish | 1243 | — |
Instruction Following GPT-4.5 leads
Gemini 1.5 Flash (May 2024): 66.8 (#205), GPT-4.5: 72.6 (#134)
| Benchmark | Gemini 1.5 Flash (May 2024) | GPT-4.5 |
|---|---|---|
| LMArena Instruction Following | 1258 | 1404 |
| LiveBench Instruction Following | — | 72.3% |
| IFEval | 83.1% | — |
Long Context GPT-4.5 leads
Gemini 1.5 Flash (May 2024): 39.0 (#187), GPT-4.5: 40.4 (#155)
| Benchmark | Gemini 1.5 Flash (May 2024) | GPT-4.5 |
|---|---|---|
| LMArena Longer Query | 1284 | 1406 |
| Fiction.LiveBench | — | 63.9% |
Writing & Preference GPT-4.5 leads
Gemini 1.5 Flash (May 2024): 48.7 (#196), GPT-4.5: 56.9 (#134)
| Benchmark | Gemini 1.5 Flash (May 2024) | GPT-4.5 |
|---|---|---|
| LMArena Text | 1287 | 1417 |
| LMArena Creative Writing | 1285 | 1394 |
| LMArena Multi-Turn | 1253 | 1444 |
| Short-Story Creative Writing | — | 75.6% |
| EQ-Bench Creative Writing | — | 1258 |
| WildBench | 79.2% | — |
| LiveBench Language | — | 61.5% |
Frequently asked questions
Is Gemini 1.5 Flash (May 2024) better than GPT-4.5?
GPT-4.5 is the stronger model overall, scoring 37.2 to 33.2 on the Noometry Index.
Is Gemini 1.5 Flash (May 2024) or GPT-4.5 better for coding?
GPT-4.5 scores higher on coding benchmarks: 42.2 versus 34.4 in the Noometry coding category.
How many benchmarks do Gemini 1.5 Flash (May 2024) and GPT-4.5 share?
23 benchmarks have published results for both models. Gemini 1.5 Flash (May 2024) has 42 scored results on Noometry and GPT-4.5 has 42.