Gemini 3.7 Flash vs GPT-5.5 Pro
Gemini 3.7 Flash 
GPT-5.5 Pro Verdict
- GPT-5.5 Pro (xhigh) leads on quality: 67.1 vs 64.7.
- Gemini 3.7 Flash (medium) is stronger in agents & tools, coding, composite, knowledge, long context, multimodal.
- GPT-5.5 Pro (xhigh) is stronger in reasoning, maths.
- Gemini 3.7 Flash (medium) is 45× cheaper ($1.50 vs $67.50 per 1M blended).
- Gemini 3.7 Flash (medium) streams 69.0× faster (276 vs 4 tokens per second).
| Metric | Gemini 3.7 Flash (medium) | GPT-5.5 Pro (xhigh) |
|---|---|---|
| BenchLeader Index | 64.7 | 67.1 |
| Agents & tools score | 64.1 | – |
| Coding score | 68.5 | – |
| Composite score | 79.2 | – |
| Knowledge score | 75.5 | – |
| Long context score | 68.0 | – |
| Multimodal score | 69.4 | – |
| Reasoning score | 62.1 | 80.1 |
| Maths score | – | 74.5 |
| Blended price $/M | $1.50 | $67.50 |
| Output speed | 276 tok/s | 4 tok/s |
| Time to first answer | 5.4 s | 3.5 s |
| Context window | 1.0M | 1.1M |
| FrontierMath Tiers 1–3 | – | 87.7% |
| FrontierMath Tier 4 | – | 78.0% |
| SciCode | 57.9% | – |
| AA Intelligence Index | 39.6 | – |
| AA-LCR | 83.0% | – |
| MMMU-Pro | 84.7% | – |
| AA-Omniscience | 23.7 | – |
| GPQA Diamond (AA) | 92.1% | – |
| Humanity's Last Exam (AA) | 39.0% | – |
| SciCode (AA) | 59.8% | – |
| ARC-AGI-1 | 91.2% | 95.0% |
| ARC-AGI-2 | 63.8% | 84.2% |
| CritPt | 9.4% | 30.6% |
| GDPval (AA) | 45.3% | – |
| τ²-Bench Banking (AA) | 35.5% | – |
| DeepSWE | 65.5% | – |
| LMCA | – | 53.9% |
| DTBench | – | 96.0% |
| CursorBench | 59.0% | – |
| GDP.pdf | 21.8% | – |
Data as of 2026-09-19. Best configuration of each model; every score links to its source on the model pages.
Gemini 3.7 Flash vs GPT-5.5 Pro: questions
- Is Gemini 3.7 Flash better than GPT-5.5 Pro?
- GPT-5.5 Pro (xhigh) leads on quality: 67.1 vs 64.7. The BenchLeader Index combines every independent quality benchmark; GPT-5.5 Pro (xhigh) is ahead overall as of 2026-09-19, but check the category scores for your use.
- Which is cheaper, Gemini 3.7 Flash or GPT-5.5 Pro?
- Gemini 3.7 Flash is cheaper: $1.50 against $67.50 per million tokens, blended at three input tokens per output token.
- Which is faster, Gemini 3.7 Flash or GPT-5.5 Pro?
- Gemini 3.7 Flash streams faster: 276 against 4 output tokens per second.
- Which has the larger context window?
- GPT-5.5 Pro accepts more context: 1.1M against 1.0M tokens.