Gemini 3 Flash vs Grok 4.6
Gemini 3 Flash 
Grok 4.6 Verdict
- Grok 4.6 (medium) leads on quality: 63.9 vs 61.6.
- Gemini 3 Flash (thinking) is stronger in agents & tools, instruction following, multimodal.
- Grok 4.6 (medium) is stronger in composite, knowledge, long context, coding, reasoning.
- Gemini 3 Flash (thinking) is 2.7× cheaper ($1.13 vs $3.00 per 1M blended).
- Gemini 3 Flash (thinking) streams 3.4× faster (180 vs 53 tokens per second).
| Metric | Gemini 3 Flash (thinking) | Grok 4.6 (medium) |
|---|---|---|
| BenchLeader Index | 61.6 | 63.9 |
| Agents & tools score | 67.4 | – |
| Composite score | 62.3 | 83.4 |
| Instruction following score | 75.4 | – |
| Knowledge score | 69.0 | 77.5 |
| Long context score | 65.5 | 67.1 |
| Multimodal score | 64.4 | – |
| Coding score | – | 64.1 |
| Reasoning score | – | 62.1 |
| Blended price $/M | $1.13 | $3.00 |
| Output speed | 180 tok/s | 53 tok/s |
| Time to first answer | 6.1 s | 33.4 s |
| Context window | 1M | 500k |
| SciCode | – | 54.6% |
| AA Intelligence Index | 26.3 | 43.0 |
| IFBench | 78.0% | – |
| AA-LCR | 78.0% | 81.0% |
| MMMU-Pro | 79.9% | – |
| AA-Omniscience | 10.1 | 28 |
| Terminal-Bench Hard | 38.6% | – |
| GPQA Diamond (AA) | 89.8% | 93.5% |
| Humanity's Last Exam (AA) | 36.6% | 42.1% |
| SciCode (AA) | – | 55.9% |
| τ²-Bench Telecom (AA) | 80.4% | – |
| ARC-AGI-1 | – | 87.5% |
| ARC-AGI-2 | – | 61.3% |
Data as of 2026-09-10. Best configuration of each model; every score links to its source on the model pages.
Gemini 3 Flash vs Grok 4.6: questions
- Is Gemini 3 Flash better than Grok 4.6?
- Grok 4.6 (medium) leads on quality: 63.9 vs 61.6. The BenchLeader Index combines every independent quality benchmark; Grok 4.6 (medium) is ahead overall as of 2026-09-10, but check the category scores for your use.
- Which is cheaper, Gemini 3 Flash or Grok 4.6?
- Gemini 3 Flash is cheaper: $1.13 against $3.00 per million tokens, blended at three input tokens per output token.
- Which is faster, Gemini 3 Flash or Grok 4.6?
- Gemini 3 Flash streams faster: 180 against 53 output tokens per second.
- Which has the larger context window?
- Gemini 3 Flash accepts more context: 1M against 500k tokens.