Gemini 3.6 Flash vs GPT-5.4
Gemini 3.6 Flash 
GPT-5.4 Verdict
- GPT-5.4 leads on quality: 63.5 vs 60.8.
- Gemini 3.6 Flash is stronger in knowledge, maths, multimodal.
- GPT-5.4 is stronger in coding, composite, long context, agents & tools, human preference, instruction following, reasoning.
- Gemini 3.6 Flash is 3.8× cheaper ($1.50 vs $5.63 per 1M blended).
- Gemini 3.6 Flash streams 1.5× faster (194 vs 129 tokens per second).
| Metric | Gemini 3.6 Flash | GPT-5.4 |
|---|---|---|
| BenchLeader Index | 60.8 | 63.5 |
| Coding score | 49.8 | 51.6 |
| Composite score | 72.4 | 78.3 |
| Knowledge score | 74.7 | 66.9 |
| Long context score | 66.6 | 67.6 |
| Maths score | 54.8 | – |
| Multimodal score | 67.8 | 64.0 |
| Agents & tools score | – | 66.2 |
| Human preference score | – | 64.7 |
| Instruction following score | – | 71.9 |
| Reasoning score | – | 62.6 |
| Blended price $/M | $1.50 | $5.63 |
| Output speed | 194 tok/s | 129 tok/s |
| Time to first answer | 16.8 s | 124.6 s |
| Context window | 1.0M | 1.1M |
| Terminal-Bench | – | 81.8% |
| APEX-Agents | – | 34.9% |
| FrontierCode | 34.4% | – |
| ProofBench | 36.0% | – |
| Epoch Capabilities Index | 154.3 | 156.9 |
| LMArena Text | – | 1466 |
| LMArena Hard Prompts | – | 1488 |
| LMArena Coding | – | 1514 |
| LMArena WebDev | – | 1386 |
| LMArena Vision | – | 1293 |
| AA Intelligence Index | 34.3 | 39.0 |
| IFBench | – | 74.0% |
| AA-LCR | 80.0% | 82.0% |
| MMMU-Pro | 83.2% | 78.4% |
| AA-Omniscience | 22.1 | 5.8 |
| Terminal-Bench Hard | – | 57.6% |
| GPQA Diamond (AA) | 92.8% | 92.0% |
| Humanity's Last Exam (AA) | 40.8% | 43.7% |
| SciCode (AA) | 53.4% | – |
| τ²-Bench Telecom (AA) | – | 87.1% |
| AIME 2026 | 96.7% | – |
| HMMT February 2026 | 89.4% | – |
| MathArena Apex | 26.0% | – |
| HiL-Bench | – | 9.7% |
| EQ-Bench 4 | – | 1272 |
| Kagi LLM Benchmark | – | 63.8% |
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: questions
- Is Gemini 3.6 Flash better than GPT-5.4?
- GPT-5.4 leads on quality: 63.5 vs 60.8. The BenchLeader Index combines every independent quality benchmark; GPT-5.4 is ahead overall as of 2026-09-10, but check the category scores for your use.
- Is Gemini 3.6 Flash better than GPT-5.4 for coding?
- GPT-5.4 scores higher in coding (52 vs 50 on the category index, where 50 is average).
- Which is cheaper, Gemini 3.6 Flash or GPT-5.4?
- Gemini 3.6 Flash is cheaper: $1.50 against $5.63 per million tokens, blended at three input tokens per output token.
- Which is faster, Gemini 3.6 Flash or GPT-5.4?
- Gemini 3.6 Flash streams faster: 194 against 129 output tokens per second.
- Which has the larger context window?
- GPT-5.4 accepts more context: 1.1M against 1.0M tokens.