Gemini 3.6 Flash vs GPT-5.4 Pro
Gemini 3.6 Flash 
GPT-5.4 Pro Verdict
- GPT-5.4 Pro leads on quality: 64.3 vs 60.8.
- Gemini 3.6 Flash is stronger in coding, composite, knowledge, long context, maths.
- GPT-5.4 Pro is stronger in multimodal, instruction following, reasoning.
- Gemini 3.6 Flash is 45× cheaper ($1.50 vs $67.50 per 1M blended).
- Gemini 3.6 Flash streams 193.6× faster (194 vs 1 tokens per second).
| Metric | Gemini 3.6 Flash | GPT-5.4 Pro |
|---|---|---|
| BenchLeader Index | 60.8 | 64.3 |
| Coding score | 49.8 | – |
| Composite score | 72.4 | – |
| Knowledge score | 74.7 | 73.6 |
| Long context score | 66.6 | – |
| Maths score | 54.8 | – |
| Multimodal score | 67.8 | 69.8 |
| Instruction following score | – | 67.3 |
| Reasoning score | – | 75.3 |
| Blended price $/M | $1.50 | $67.50 |
| Output speed | 194 tok/s | 1 tok/s |
| Time to first answer | 16.8 s | 6.5 s |
| Context window | 1.0M | 1.1M |
| Humanity's Last Exam | – | 44.3% |
| SimpleBench | – | 74.1% |
| FrontierCode | 34.4% | – |
| ProofBench | 36.0% | – |
| Epoch Capabilities Index | 154.3 | 158.9 |
| AA Intelligence Index | 34.3 | – |
| AA-LCR | 80.0% | – |
| MMMU-Pro | 83.2% | – |
| AA-Omniscience | 22.1 | – |
| GPQA Diamond (AA) | 92.8% | – |
| Humanity's Last Exam (AA) | 40.8% | – |
| SciCode (AA) | 53.4% | – |
| AIME 2026 | 96.7% | – |
| HMMT February 2026 | 89.4% | – |
| MathArena Apex | 26.0% | – |
| MultiChallenge | – | 69.2% |
| VISTA | – | 53.9% |
| MultiNRC | – | 62.3% |
| TutorBench | – | 56.6% |
Data as of 2026-09-10. Best configuration of each model; every score links to its source on the model pages.
Gemini 3.6 Flash vs GPT-5.4 Pro: questions
- Is Gemini 3.6 Flash better than GPT-5.4 Pro?
- GPT-5.4 Pro leads on quality: 64.3 vs 60.8. The BenchLeader Index combines every independent quality benchmark; GPT-5.4 Pro is ahead overall as of 2026-09-10, but check the category scores for your use.
- Which is cheaper, Gemini 3.6 Flash or GPT-5.4 Pro?
- Gemini 3.6 Flash is cheaper: $1.50 against $67.50 per million tokens, blended at three input tokens per output token.
- Which is faster, Gemini 3.6 Flash or GPT-5.4 Pro?
- Gemini 3.6 Flash streams faster: 194 against 1 output tokens per second.
- Which has the larger context window?
- GPT-5.4 Pro accepts more context: 1.1M against 1.0M tokens.