Model comparison
Gemini 1.0 Pro vs GPT-5.5 Instant
GPT-5.5 Instant is the stronger model overall, scoring 42.5 to 27.1 on the Noometry Index.
Last verified . 19 shared benchmarks.
GoogleSummary
- They share 19 benchmarks with published results for both. Gemini 1.0 Pro scores higher in 0 categories and GPT-5.5 Instant in 8 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where GPT-5.5 Instant leads 48.9 to 15.5.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 1.1% for Gemini 1.0 Pro and 68.1% for GPT-5.5 Instant.
Side by side
| Gemini 1.0 Pro | GPT-5.5 Instant | |
|---|---|---|
| Provider | OpenAI | |
| Noometry Index | 27.1 | 42.5 |
| Released | 2023-12-13 | 2026-05-05 |
| Weights | Proprietary | Proprietary |
| Context window | — | — |
| Max output | — | — |
| Input $ / M tokens | — | — |
| Output $ / M tokens | — | — |
| Results tracked | 24 | 27 |
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Category by category
Coding GPT-5.5 Instant leads
Gemini 1.0 Pro: 31.6 (#270), GPT-5.5 Instant: 43.7 (#73)
| Benchmark | Gemini 1.0 Pro | GPT-5.5 Instant |
|---|---|---|
| LMArena Coding | 1108 | 1433 |
| SciCode | — | 48.6% |
| HumanEval+ | 55.5% | — |
| MBPP+ | 61.4% | — |
Reasoning GPT-5.5 Instant leads
Gemini 1.0 Pro: 16.4 (#292), GPT-5.5 Instant: 24.2 (#149)
| Benchmark | Gemini 1.0 Pro | GPT-5.5 Instant |
|---|---|---|
| LMArena Hard Prompts | 1109 | 1426 |
| Epoch Capabilities Index | 116.97 | 142.48 |
| CritPt | — | 0% |
| Chess Puzzles | — | 12% |
| DTBench | 45.9% | — |
Math GPT-5.5 Instant leads
Gemini 1.0 Pro: 8.7 (#315), GPT-5.5 Instant: 26.1 (#241)
| Benchmark | Gemini 1.0 Pro | GPT-5.5 Instant |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 1.1% | 68.1% |
| LMArena Math | 1132 | 1420 |
| FrontierMath (Tiers 1-3) | — | 26.3% |
| FrontierMath Tier 4 | — | 2.4% |
| MATH Level 5 | 11.2% | — |
Knowledge GPT-5.5 Instant leads
Gemini 1.0 Pro: 15.5 (#286), GPT-5.5 Instant: 48.9 (#68)
| Benchmark | Gemini 1.0 Pro | GPT-5.5 Instant |
|---|---|---|
| GPQA Diamond | 34% | 82.5% |
| LMArena Expert | 1059 | 1409 |
| MMLU | 70% | — |
Multimodal Not comparable
Gemini 1.0 Pro: —, GPT-5.5 Instant: 39.3 (#48)
| Benchmark | Gemini 1.0 Pro | GPT-5.5 Instant |
|---|---|---|
| LMArena Vision | — | 1250 |
| LMArena Document | — | 1403 |
Multilingual GPT-5.5 Instant leads
Gemini 1.0 Pro: 33.5 (#247), GPT-5.5 Instant: 53.0 (#76)
| Benchmark | Gemini 1.0 Pro | GPT-5.5 Instant |
|---|---|---|
| LMArena Non-English | 1138 | 1417 |
| LMArena Chinese | 1124 | 1457 |
| LMArena French | 1144 | 1428 |
| LMArena German | 1125 | 1410 |
| LMArena Japanese | 1023 | 1408 |
| LMArena Russian | 1186 | 1430 |
| LMArena Spanish | 1118 | 1430 |
| LMArena Korean | — | 1393 |
Instruction Following GPT-5.5 Instant leads
Gemini 1.0 Pro: 57.9 (#262), GPT-5.5 Instant: 74.4 (#94)
| Benchmark | Gemini 1.0 Pro | GPT-5.5 Instant |
|---|---|---|
| LMArena Instruction Following | 1114 | 1407 |
Long Context GPT-5.5 Instant leads
Gemini 1.0 Pro: 34.3 (#244), GPT-5.5 Instant: 43.4 (#92)
| Benchmark | Gemini 1.0 Pro | GPT-5.5 Instant |
|---|---|---|
| LMArena Longer Query | 1132 | 1422 |
Writing & Preference GPT-5.5 Instant leads
Gemini 1.0 Pro: 36.2 (#259), GPT-5.5 Instant: 62.0 (#81)
| Benchmark | Gemini 1.0 Pro | GPT-5.5 Instant |
|---|---|---|
| LMArena Text | 1149 | 1419 |
| LMArena Creative Writing | 1130 | 1420 |
| LMArena Multi-Turn | 1139 | 1434 |
Frequently asked questions
Is Gemini 1.0 Pro better than GPT-5.5 Instant?
GPT-5.5 Instant is the stronger model overall, scoring 42.5 to 27.1 on the Noometry Index.
Is Gemini 1.0 Pro or GPT-5.5 Instant better for coding?
GPT-5.5 Instant scores higher on coding benchmarks: 43.7 versus 31.6 in the Noometry coding category.
How many benchmarks do Gemini 1.0 Pro and GPT-5.5 Instant share?
19 benchmarks have published results for both models. Gemini 1.0 Pro has 24 scored results on Noometry and GPT-5.5 Instant has 27.