Gemini 3.6 Flash vs Grok 4.3
Gemini 3.6 Flash 
Grok 4.3 Verdict
- Gemini 3.6 Flash and Grok 4.3 (medium) are level on quality (60.8 vs 60.7).
- Gemini 3.6 Flash is stronger in coding, composite, knowledge, long context, maths, multimodal.
- Grok 4.3 (medium) is stronger in agents & tools, instruction following.
- They cost about the same ($1.50 per 1M blended).
- Gemini 3.6 Flash streams 1.7× faster (194 vs 112 tokens per second).
| Metric | Gemini 3.6 Flash | Grok 4.3 (medium) |
|---|---|---|
| BenchLeader Index | 60.8 | 60.7 |
| Coding score | 49.8 | – |
| Composite score | 72.4 | 60.3 |
| Knowledge score | 74.7 | 72.1 |
| Long context score | 66.6 | 64.0 |
| Maths score | 54.8 | – |
| Multimodal score | 67.8 | 60.2 |
| Agents & tools score | – | 60.1 |
| Instruction following score | – | 80.0 |
| Blended price $/M | $1.50 | $1.56 |
| Output speed | 194 tok/s | 112 tok/s |
| Time to first answer | 16.8 s | 12.1 s |
| Context window | 1.0M | 1M |
| FrontierCode | 34.4% | – |
| ProofBench | 36.0% | – |
| Epoch Capabilities Index | 154.3 | – |
| AA Intelligence Index | 34.3 | 24.8 |
| IFBench | – | 83.3% |
| AA-LCR | 80.0% | 75.0% |
| MMMU-Pro | 83.2% | 75.8% |
| AA-Omniscience | 22.1 | 16.7 |
| Terminal-Bench Hard | – | 30.3% |
| GPQA Diamond (AA) | 92.8% | 89.0% |
| Humanity's Last Exam (AA) | 40.8% | 30.0% |
| SciCode (AA) | 53.4% | – |
| τ²-Bench Telecom (AA) | – | 91.2% |
| AIME 2026 | 96.7% | – |
| HMMT February 2026 | 89.4% | – |
| MathArena Apex | 26.0% | – |
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 Grok 4.3: questions
- Is Gemini 3.6 Flash better than Grok 4.3?
- Gemini 3.6 Flash and Grok 4.3 (medium) are level on quality (60.8 vs 60.7). The BenchLeader Index combines every independent quality benchmark; Gemini 3.6 Flash is ahead overall as of 2026-09-10, but check the category scores for your use.
- Which is cheaper, Gemini 3.6 Flash or Grok 4.3?
- Gemini 3.6 Flash is cheaper: $1.50 against $1.56 per million tokens, blended at three input tokens per output token.
- Which is faster, Gemini 3.6 Flash or Grok 4.3?
- Gemini 3.6 Flash streams faster: 194 against 112 output tokens per second.
- Which has the larger context window?
- Gemini 3.6 Flash accepts more context: 1.0M against 1M tokens.