Gemini 3.5 Flash
VS
Grok 4.20 Beta
Gemini 3.5 Flash vs Grok 4.20 Beta: which wins at real work?
22 task areas · same graded test runs · rank comparison only, so 0–100 and Elo collections never mix raw scores.
Gemini 3.5 Flash wins 20 of 22 task areas we tested; Grok 4.20 Beta takes 2. Grok 4.20 Beta costs 1.3× less per token ($8 vs $10.5 per 1M).
Grok 4.20 Beta costs 1.3× less per token ($8 vs $10.5 per 1M).
Task by task
| Task area | Gemini 3.5 Flash | Grok 4.20 Beta | Winner |
|---|---|---|---|
| RAG, Safety & Grounding |
#15
/ 113
Excellent
|
#93
/ 113
Strong
|
Gemini 3.5 Flash |
| Summarization & Meeting Notes |
#17
/ 110
Excellent
|
#95
/ 110
Excellent
|
Gemini 3.5 Flash |
| Training & Education |
#7
/ 110
Excellent
|
#76
/ 110
Strong
|
Gemini 3.5 Flash |
| Creative & Comedy | #27 / 110 | #92 / 110 | Gemini 3.5 Flash |
| Customer Support |
#12
/ 113
Strong
|
#72
/ 113
Usable
|
Gemini 3.5 Flash |
| Translation & Localization |
#30
/ 110
Excellent
|
#90
/ 110
Strong
|
Gemini 3.5 Flash |
| Data & Analytics |
#34
/ 110
Excellent
|
#91
/ 110
Excellent
|
Gemini 3.5 Flash |
| Content & Brand |
#46
/ 124
Strong
|
#99
/ 124
Usable
|
Gemini 3.5 Flash |
| Executive Assistant |
#19
/ 112
Strong
|
#69
/ 112
Strong
|
Gemini 3.5 Flash |
| Coding |
#28
/ 115
Strong
|
#77
/ 115
Strong
|
Gemini 3.5 Flash |
| Knowledge & Docs |
#44
/ 110
Strong
|
#86
/ 110
Usable
|
Gemini 3.5 Flash |
| Presentations & Decks |
#17
/ 110
Excellent
|
#56
/ 110
Strong
|
Gemini 3.5 Flash |
| Legal & HR |
#73
/ 110
Strong
|
#106
/ 110
Strong
|
Gemini 3.5 Flash |
| Frontend & Landing Pages |
#4
/ 109
Usable
|
#32
/ 109
Needs editing
|
Gemini 3.5 Flash |
| AI Strategy |
#23
/ 126
Strong
|
#49
/ 126
Strong
|
Gemini 3.5 Flash |
| Research & Competitive Analysis |
#65
/ 110
Usable
|
#86
/ 110
Needs editing
|
Gemini 3.5 Flash |
| Landing Pages |
#40
/ 72
Strong
|
#60
/ 72
Usable
|
Gemini 3.5 Flash |
| Chef / Home Cooking |
#24
/ 126
Usable
|
#38
/ 126
Usable
|
Gemini 3.5 Flash |
| Investor & Pitch |
#56
/ 66
Usable
|
#43
/ 66
Usable
|
Grok 4.20 Beta |
| Sales |
#33
/ 110
Strong
|
#46
/ 110
Usable
|
Gemini 3.5 Flash |
| Structured Output |
#35
/ 113
Excellent
|
#43
/ 113
Excellent
|
Gemini 3.5 Flash |
| Product & Project Management |
#33
/ 110
Strong
|
#31
/ 110
Excellent
|
Grok 4.20 Beta |
Rank = position among every model config we tested in that task area (lower is better). Sorted by biggest gap first.
Frequently asked
Is Gemini 3.5 Flash better than Grok 4.20 Beta?
Across 22 task areas we benchmarked, Gemini 3.5 Flash ranks higher in 20 and Grok 4.20 Beta in 2.
Which is cheaper, Gemini 3.5 Flash or Grok 4.20 Beta?
Grok 4.20 Beta costs 1.3× less per token ($8 vs $10.5 per 1M).
What is Gemini 3.5 Flash better at?
Gemini 3.5 Flash out-ranks Grok 4.20 Beta at RAG, Safety & Grounding, Summarization & Meeting Notes, Training & Education.
What is Grok 4.20 Beta better at?
Grok 4.20 Beta out-ranks Gemini 3.5 Flash at Investor & Pitch, Product & Project Management.
More comparisons
This page is Spring Prompt, running in public
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Prompt × model results
12 test cases · 3 evals