Model comparison
Gemini 2.0 Flash (Feb 2025) vs GPT-5.5
GPT-5.5 is the stronger model overall, scoring 63.4 to 35.1 on the Noometry Index.
Last verified . 28 shared benchmarks.
GoogleSummary
- They share 28 benchmarks with published results for both. Gemini 2.0 Flash (Feb 2025) scores higher in 0 categories and GPT-5.5 in 10 categories; 10 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where GPT-5.5 leads 72.8 to 15.2.
- The biggest single-benchmark swing is ARC-AGI-2: 1.3% for Gemini 2.0 Flash (Feb 2025) and 85% for GPT-5.5.
Side by side
| Gemini 2.0 Flash (Feb 2025) | GPT-5.5 | |
|---|---|---|
| Provider | OpenAI | |
| Noometry Index | 35.1 | 63.4 |
| Released | 2024-12-06 | 2026-04-23 |
| Weights | Proprietary | Proprietary |
| Context window | — | 1.05M |
| Max output | — | 128K |
| Input $ / M tokens | — | $5 |
| Output $ / M tokens | — | $30 |
| Results tracked | 54 | 71 |
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Category by category
Coding GPT-5.5 leads
Gemini 2.0 Flash (Feb 2025): 28.4 (#315), GPT-5.5: 58.2 (#17)
| Benchmark | Gemini 2.0 Flash (Feb 2025) | GPT-5.5 |
|---|---|---|
| WeirdML | 25.8% | 84.9% |
| LMArena Coding | 1350 | 1494 |
| SWE-bench Verified | — | 80.6% |
| DeepSWE | — | 67% |
| FrontierCode | — | 43% |
| SWE-bench Verified (bash only) | 13.5% | — |
| Aider Polyglot | 38.2% | — |
| LMArena WebDev | — | 1513 |
| SciCode | — | 56.1% |
| GSO | — | 40.2% |
| BigCodeBench Instruct | 45.9% | — |
| LiveBench Coding | 63.4% | — |
| MirrorCode | — | 10% |
| BigCodeBench Complete | 59.9% | — |
| CadEval | 30% | — |
| ALE-Bench | — | 1,943 |
Agentic & Tool Use GPT-5.5 leads
Gemini 2.0 Flash (Feb 2025): 28.1 (#92), GPT-5.5: 50.7 (#6)
| Benchmark | Gemini 2.0 Flash (Feb 2025) | GPT-5.5 |
|---|---|---|
| Terminal-Bench | — | 84.7% |
| APEX-Agents | — | 55.1% |
| OSWorld 2.0 | — | 13% |
| Remote Labor Index | — | 6.3% |
| TheAgentCompany | 11.4% | — |
| τ²-bench Banking | — | 44.6% |
| DeepResearch Bench | — | 54% |
| PostTrainBench | — | 27.2% |
| ExploitBench | — | 47.4% |
| GBAEval | — | 53.2% |
| GDP.pdf | — | 26% |
| LMArena Search | — | 1242 |
| Vending-Bench 2 | — | 7,524 |
Reasoning GPT-5.5 leads
Gemini 2.0 Flash (Feb 2025): 15.2 (#318), GPT-5.5: 72.8 (#11)
| Benchmark | Gemini 2.0 Flash (Feb 2025) | GPT-5.5 |
|---|---|---|
| ARC-AGI-2 | 1.3% | 85% |
| SimpleBench | 31.1% | 69% |
| Kagi LLM Benchmark | 37.8% | 88.8% |
| LMArena Hard Prompts | 1346 | 1489 |
| DTBench | 63.2% | 96% |
| Epoch Capabilities Index | 135.36 | 159.1 |
| NYT Connections (extended) | — | 96.2% |
| ARC-AGI-1 | — | 95% |
| CritPt | — | 27.1% |
| Chess Puzzles | — | 54% |
| EnigmaEval | 1.1% | — |
| EBR-Bench | — | 34.3% |
| LiveBench Reasoning | 78.2% | — |
| Mystery Game Puzzles | — | 56% |
| LiveBench Data Analysis | 69.4% | — |
| LMCA | — | 54.3% |
| Surface Evolver Bench | — | 88.1% |
| Bench to the Future 3 | — | 0.14 |
| ForecastBench | — | 60.6 |
| LiveBench | 66.9% | — |
Math GPT-5.5 leads
Gemini 2.0 Flash (Feb 2025): 37.9 (#146), GPT-5.5: 81.7 (#11)
| Benchmark | Gemini 2.0 Flash (Feb 2025) | GPT-5.5 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 57.8% | 100% |
| LMArena Math | 1352 | 1486 |
| FrontierMath (Feb 2025 set) | 1.7% | 51.7% |
| FrontierMath (Tiers 1-3) | — | 85.3% |
| FrontierMath Tier 4 | — | 72.5% |
| MathArena Final-Answer Competitions | — | 94.3% |
| ProofBench | — | 50% |
| Omni-MATH | 45.9% | — |
| LiveBench Math | 75.8% | — |
| MATH Level 5 | 82.2% | — |
| FrontierMath Erdős | — | 0% |
| FrontierMath Tier 4 (v1) | — | 35.4% |
Knowledge GPT-5.5 leads
Gemini 2.0 Flash (Feb 2025): 32.0 (#213), GPT-5.5: 64.4 (#17)
| Benchmark | Gemini 2.0 Flash (Feb 2025) | GPT-5.5 |
|---|---|---|
| GPQA Diamond | 64.1% | 94% |
| LMArena Expert | 1339 | 1508 |
| Humanity's Last Exam | 6.6% | — |
| SimpleQA Verified | — | 63% |
| MMLU-Pro | 73.7% | — |
| Confabulations | 12.4% | — |
| Vectara Hallucination Rate | — | 9.3% |
| GPQA (HELM) | 55.6% | — |
| MMLU | 79.7% | — |
Multimodal GPT-5.5 leads
Gemini 2.0 Flash (Feb 2025): 36.5 (#79), GPT-5.5: 46.9 (#12)
| Benchmark | Gemini 2.0 Flash (Feb 2025) | GPT-5.5 |
|---|---|---|
| LMArena Vision | 1158 | 1297 |
| GeoBench | 77% | — |
| Blueprint-Bench 2 | — | 36.2% |
| Furniture Assembly | — | 44.2% |
| LMArena Document | — | 1486 |
Multilingual GPT-5.5 leads
Gemini 2.0 Flash (Feb 2025): 47.4 (#149), GPT-5.5: 56.4 (#20)
| Benchmark | Gemini 2.0 Flash (Feb 2025) | GPT-5.5 |
|---|---|---|
| LMArena Non-English | 1342 | 1467 |
| LMArena Chinese | 1373 | 1533 |
| LMArena French | 1391 | 1486 |
| LMArena German | 1353 | 1480 |
| LMArena Japanese | 1294 | 1498 |
| LMArena Korean | 1313 | 1460 |
| LMArena Russian | 1351 | 1473 |
| LMArena Spanish | 1363 | 1468 |
Instruction Following GPT-5.5 leads
Gemini 2.0 Flash (Feb 2025): 74.4 (#97), GPT-5.5: 77.5 (#18)
| Benchmark | Gemini 2.0 Flash (Feb 2025) | GPT-5.5 |
|---|---|---|
| LMArena Instruction Following | 1336 | 1479 |
| LiveBench Instruction Following | 85.8% | — |
| IFEval | 84.1% | — |
Long Context GPT-5.5 leads
Gemini 2.0 Flash (Feb 2025): 38.1 (#203), GPT-5.5: 48.3 (#12)
| Benchmark | Gemini 2.0 Flash (Feb 2025) | GPT-5.5 |
|---|---|---|
| LMArena Longer Query | 1344 | 1484 |
| Fiction.LiveBench | 61.1% | — |
| CL-bench Life | — | 22.2% |
Writing & Preference GPT-5.5 leads
Gemini 2.0 Flash (Feb 2025): 49.5 (#190), GPT-5.5: 72.7 (#13)
| Benchmark | Gemini 2.0 Flash (Feb 2025) | GPT-5.5 |
|---|---|---|
| LMArena Text | 1354 | 1472 |
| LMArena Creative Writing | 1340 | 1455 |
| EQ-Bench Creative Writing | 1128 | 1844 |
| LMArena Multi-Turn | 1350 | 1476 |
| Short-Story Creative Writing | 73.8% | — |
| WildBench | 80% | — |
| EQ-Bench 4 | — | 1315 |
| LiveBench Language | 51.3% | — |
Frequently asked questions
Is Gemini 2.0 Flash (Feb 2025) better than GPT-5.5?
GPT-5.5 is the stronger model overall, scoring 63.4 to 35.1 on the Noometry Index.
Is Gemini 2.0 Flash (Feb 2025) or GPT-5.5 better for coding?
GPT-5.5 scores higher on coding benchmarks: 58.2 versus 28.4 in the Noometry coding category.
How many benchmarks do Gemini 2.0 Flash (Feb 2025) and GPT-5.5 share?
28 benchmarks have published results for both models. Gemini 2.0 Flash (Feb 2025) has 54 scored results on Noometry and GPT-5.5 has 71.