Gemini 3.8 Flash vs Grok 4.7
Gemini 3.8 Flash 
Grok 4.7 Verdict
- Grok 4.7 (high) leads on quality: 65.8 vs 64.8.
- Gemini 3.8 Flash (medium) is stronger in agents & tools, coding, knowledge, long context, multimodal.
- Grok 4.7 (high) is stronger in composite, reasoning.
- Gemini 3.8 Flash (medium) is 2.0× cheaper ($1.50 vs $3.00 per 1M blended).
- Gemini 3.8 Flash (medium) streams 1.4× faster (78 vs 55 tokens per second).
| Metric | Gemini 3.8 Flash (medium) | Grok 4.7 (high) |
|---|---|---|
| BenchLeader Index | 64.8 | 65.8 |
| Agents & tools score | 74.8 | – |
| Coding score | 63.8 | – |
| Composite score | 79.2 | 87.5 |
| Knowledge score | 77.6 | 72.6 |
| Long context score | 68.5 | 64.8 |
| Multimodal score | 68.9 | – |
| Reasoning score | 65.5 | 76.4 |
| Blended price $/M | $1.50 | $3.00 |
| Output speed | 78 tok/s | 55 tok/s |
| Time to first answer | 2.3 s | 1.4 s |
| Context window | 1.0M | 500k |
| SciCode | 54.4% | – |
| AA Intelligence Index | 39.8 | 46.3 |
| AA-LCR | 84.0% | 77.0% |
| MMMU-Pro | 84.2% | – |
| AA-Omniscience | 28.6 | 30.9 |
| GPQA Diamond (AA) | 93.5% | – |
| Humanity's Last Exam (AA) | 42.1% | 42.3% |
| SciCode (AA) | 55.1% | 57.8% |
| LegalBench | – | 85.1% |
| CritPt | 12.3% | 18.0% |
| GDPval (AA) | 45.4% | 59.7% |
| τ²-Bench Banking (AA) | 45.8% | – |
| 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% |
| DeepSWE | 71.0% | – |
| CursorBench | 67.0% | – |
Data as of 2026-09-21. Best configuration of each model; every score links to its source on the model pages.
Gemini 3.8 Flash vs Grok 4.7: questions
- Is Gemini 3.8 Flash better than Grok 4.7?
- Grok 4.7 (high) leads on quality: 65.8 vs 64.8. 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 3.8 Flash or Grok 4.7?
- Gemini 3.8 Flash is cheaper: $1.50 against $3.00 per million tokens, blended at three input tokens per output token.
- Which is faster, Gemini 3.8 Flash or Grok 4.7?
- Gemini 3.8 Flash streams faster: 78 against 55 output tokens per second.
- Which has the larger context window?
- Gemini 3.8 Flash accepts more context: 1.0M against 500k tokens.