Model comparison
Gemini 3.5 Flash vs GPT-4.1
Gemini 3.5 Flash is the stronger model overall, scoring 54.2 to 35.9 on the Noometry Index.
Last verified . 36 shared benchmarks.
GoogleSummary
- They share 36 benchmarks with published results for both. Gemini 3.5 Flash scores higher in 9 categories and GPT-4.1 in 1 category; 10 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Gemini 3.5 Flash leads 62.8 to 11.7.
- The biggest single-benchmark swing is ARC-AGI-1: 92.5% for Gemini 3.5 Flash and 5.5% for GPT-4.1.
- Both cost about the same: $1.50 input and $9 output per million tokens.
- Gemini 3.5 Flash accepts more context: 1.05M tokens versus 1.05M.
Side by side
| Gemini 3.5 Flash | GPT-4.1 | |
|---|---|---|
| Provider | OpenAI | |
| Noometry Index | 54.2 | 35.9 |
| Released | 2026-05-19 | 2025-04-14 |
| Weights | Proprietary | Proprietary |
| Context window | 1.05M | 1.05M |
| Max output | 66K | 33K |
| Input $ / M tokens | $1.50 | $2 |
| Output $ / M tokens | $9 | $8 |
| Results tracked | 54 | 52 |
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Category by category
Coding Gemini 3.5 Flash leads
Gemini 3.5 Flash: 49.4 (#49), GPT-4.1: 34.4 (#238)
| Benchmark | Gemini 3.5 Flash | GPT-4.1 |
|---|---|---|
| SWE-bench Verified | 79.3% | 48.5% |
| WeirdML | 62.6% | 39% |
| LMArena Coding | 1492 | 1391 |
| ALE-Bench | 911.02 | 558.1 |
| DeepSWE | 37.4% | — |
| SWE-bench Verified (bash only) | — | 39.6% |
| Aider Polyglot | — | 52.4% |
| LMArena WebDev | 1499 | — |
| SciCode | 53.1% | — |
| CadEval | — | 42% |
Agentic & Tool Use GPT-4.1 leads
Gemini 3.5 Flash: 24.7 (#114), GPT-4.1: 34.7 (#43)
| Benchmark | Gemini 3.5 Flash | GPT-4.1 |
|---|---|---|
| APEX-Agents | 27.5% | — |
| Berkeley Function Calling Leaderboard | — | 54% |
| GBAEval | 6.7% | — |
| GDP.pdf | 14% | — |
| Vending-Bench 2 | 5,396 | — |
Reasoning Gemini 3.5 Flash leads
Gemini 3.5 Flash: 62.8 (#18), GPT-4.1: 11.7 (#339)
| Benchmark | Gemini 3.5 Flash | GPT-4.1 |
|---|---|---|
| ARC-AGI-2 | 72.1% | 0.4% |
| SimpleBench | 76.7% | 27% |
| ARC-AGI-1 | 92.5% | 5.5% |
| Chess Puzzles | 50% | 6% |
| EnigmaEval | 25.4% | 2.2% |
| LMArena Hard Prompts | 1488 | 1384 |
| DTBench | 94.7% | 68.3% |
| LMCA | 47.1% | 25.6% |
| Epoch Capabilities Index | 154.46 | 136.78 |
| ForecastBench | 59 | 61.5 |
| Kagi LLM Benchmark | — | 52.3% |
| NYT Connections (extended) | 92.6% | — |
| CritPt | 13.1% | — |
| EBR-Bench | 4.8% | — |
| Mystery Game Puzzles | 32% | — |
| Surface Evolver Bench | 58.1% | — |
Math Gemini 3.5 Flash leads
Gemini 3.5 Flash: 60.7 (#36), GPT-4.1: 22.3 (#280)
| Benchmark | Gemini 3.5 Flash | GPT-4.1 |
|---|---|---|
| FrontierMath (Tiers 1-3) | 62.8% | 6% |
| OTIS Mock AIME 2024-2025 | 95.6% | 38.3% |
| LMArena Math | 1504 | 1370 |
| FrontierMath (Feb 2025 set) | 39% | 5.5% |
| FrontierMath Tier 4 (v1) | 14.6% | 0% |
| FrontierMath Tier 4 | 26.8% | — |
| MathArena Final-Answer Competitions | 76.3% | — |
| ProofBench | 31% | — |
| Omni-MATH | — | 47.1% |
| MATH Level 5 | — | 83% |
Knowledge Gemini 3.5 Flash leads
Gemini 3.5 Flash: 66.3 (#11), GPT-4.1: 37.1 (#160)
| Benchmark | Gemini 3.5 Flash | GPT-4.1 |
|---|---|---|
| GPQA Diamond | 92.8% | 66.9% |
| SimpleQA Verified | 66.2% | 31.1% |
| LMArena Expert | 1495 | 1364 |
| Humanity's Last Exam | — | 5.4% |
| MMLU-Pro | — | 81.1% |
| Vectara Hallucination Rate | — | 5.6% |
| GPQA (HELM) | — | 65.9% |
Multimodal Gemini 3.5 Flash leads
Gemini 3.5 Flash: 45.7 (#15), GPT-4.1: 38.2 (#67)
| Benchmark | Gemini 3.5 Flash | GPT-4.1 |
|---|---|---|
| LMArena Vision | 1310 | 1211 |
| GeoBench | — | 72% |
| Blueprint-Bench 2 | 33.6% | — |
| LMArena Document | 1463 | — |
Multilingual Gemini 3.5 Flash leads
Gemini 3.5 Flash: 57.0 (#13), GPT-4.1: 49.4 (#133)
| Benchmark | Gemini 3.5 Flash | GPT-4.1 |
|---|---|---|
| LMArena Non-English | 1476 | 1370 |
| LMArena Chinese | 1526 | 1382 |
| LMArena French | 1490 | 1382 |
| LMArena German | 1492 | 1381 |
| LMArena Japanese | 1486 | 1319 |
| LMArena Korean | 1451 | 1339 |
| LMArena Russian | 1493 | 1377 |
| LMArena Spanish | 1480 | 1376 |
Instruction Following Gemini 3.5 Flash leads
Gemini 3.5 Flash: 77.0 (#30), GPT-4.1: 71.3 (#153)
| Benchmark | Gemini 3.5 Flash | GPT-4.1 |
|---|---|---|
| LMArena Instruction Following | 1467 | 1367 |
| IFEval | — | 83.8% |
Long Context Gemini 3.5 Flash leads
Gemini 3.5 Flash: 45.4 (#38), GPT-4.1: 40.0 (#163)
| Benchmark | Gemini 3.5 Flash | GPT-4.1 |
|---|---|---|
| LMArena Longer Query | 1482 | 1385 |
| Fiction.LiveBench | — | 63.9% |
Writing & Preference Gemini 3.5 Flash leads
Gemini 3.5 Flash: 65.5 (#47), GPT-4.1: 57.6 (#125)
| Benchmark | Gemini 3.5 Flash | GPT-4.1 |
|---|---|---|
| LMArena Text | 1482 | 1383 |
| LMArena Creative Writing | 1470 | 1363 |
| LMArena Multi-Turn | 1481 | 1398 |
| EQ-Bench Creative Writing | — | 1420 |
| WildBench | — | 85.4% |
| EQ-Bench 4 | 1087 | — |
Frequently asked questions
Is Gemini 3.5 Flash better than GPT-4.1?
Gemini 3.5 Flash is the stronger model overall, scoring 54.2 to 35.9 on the Noometry Index.
Which is cheaper, Gemini 3.5 Flash or GPT-4.1?
Gemini 3.5 Flash is cheaper. It lists at $1.50 per million input tokens and $9 per million output tokens; GPT-4.1 lists at $2 and $8.
Is Gemini 3.5 Flash or GPT-4.1 better for coding?
Gemini 3.5 Flash scores higher on coding benchmarks: 49.4 versus 34.4 in the Noometry coding category.
Which has the bigger context window?
Gemini 3.5 Flash does, with 1.05M tokens against 1.05M.
How many benchmarks do Gemini 3.5 Flash and GPT-4.1 share?
36 benchmarks have published results for both models. Gemini 3.5 Flash has 54 scored results on Noometry and GPT-4.1 has 52.