Gemini 3.5 Flash vs Grok 4.7
Gemini 3.5 Flash 
Grok 4.7 Verdict
- Grok 4.7 (high) leads on quality: 65.8 vs 64.2.
- Gemini 3.5 Flash (medium) is stronger in agents & tools, coding, human preference, instruction following, knowledge, maths, multimodal.
- Grok 4.7 (high) is stronger in composite, long context, reasoning.
- They cost about the same ($3.00 per 1M blended).
- Gemini 3.5 Flash (medium) streams 4.4× faster (240 vs 55 tokens per second).
| Metric | Gemini 3.5 Flash (medium) | Grok 4.7 (high) |
|---|---|---|
| BenchLeader Index | 64.2 | 65.8 |
| Agents & tools score | 67.9 | – |
| Coding score | 58.7 | – |
| Composite score | 71.4 | 87.5 |
| Human preference score | 67.5 | – |
| Instruction following score | 72.7 | – |
| Knowledge score | 73.9 | 72.6 |
| Long context score | 63.4 | 64.8 |
| Maths score | 67.2 | – |
| Multimodal score | 67.5 | – |
| Reasoning score | 64.1 | 76.4 |
| Blended price $/M | $3.38 | $3.00 |
| Output speed | 240 tok/s | 55 tok/s |
| Time to first answer | 21.1 s | 1.4 s |
| Context window | 1.0M | 500k |
| LMArena Text | 1474 | – |
| LMArena Hard Prompts | 1493 | – |
| LMArena Coding | 1502 | – |
| LMArena WebDev | 1492 | – |
| LMArena Vision | 1307 | – |
| AA Intelligence Index | 33.6 | 46.3 |
| IFBench | 74.6% | – |
| AA-LCR | 74.3% | 77.0% |
| MMMU-Pro | 83.9% | – |
| AA-Omniscience | 20.8 | 30.9 |
| Terminal-Bench Hard | 39.4% | – |
| GPQA Diamond (AA) | 92.1% | – |
| Humanity's Last Exam (AA) | 41.3% | 42.3% |
| SciCode (AA) | – | 57.8% |
| τ²-Bench Telecom (AA) | 95.6% | – |
| LegalBench | – | 85.1% |
| CritPt | 10.9% | 18.0% |
| GDPval (AA) | – | 59.7% |
| Code Migration | – | 34.7% |
| Excel Modeling Benchmark | – | 54.9% |
| Harvey's Legal Agent Benchmark | – | 19.6% |
| Legal Research Bench | – | 39.9% |
| MedCode | – | 48.7% |
| MedScribe | – | 87.2% |
| ProgramBench | – | 0.0% |
| Public Benefits Bench | – | 68.5% |
| SAGE | – | 31.0% |
| LMArena Maths | 1478 | – |
| LMArena Creative Writing | 1466 | – |
| LMArena Instruction Following | 1463 | – |
| LMArena Multi-turn | 1476 | – |
| LMArena Longer Queries | 1478 | – |
| LMArena Document | 1461 | – |
| Surface Evolver Bench | 58.1% | – |
| DeepSWE | 37.4% | – |
| GDP.pdf | 14.0% | – |
Data as of 2026-09-21. Best configuration of each model; every score links to its source on the model pages.
Gemini 3.5 Flash vs Grok 4.7: questions
- Is Gemini 3.5 Flash better than Grok 4.7?
- Grok 4.7 (high) leads on quality: 65.8 vs 64.2. The BenchLeader Index combines every independent quality benchmark; Grok 4.7 (high) is ahead overall as of 2026-09-21, but check the category scores for your use.
- Which is cheaper, Gemini 3.5 Flash or Grok 4.7?
- Grok 4.7 is cheaper: $3.00 against $3.38 per million tokens, blended at three input tokens per output token.
- Which is faster, Gemini 3.5 Flash or Grok 4.7?
- Gemini 3.5 Flash streams faster: 240 against 55 output tokens per second.
- Which has the larger context window?
- Gemini 3.5 Flash accepts more context: 1.0M against 500k tokens.