Gemini 3 Flash Preview
VS
Grok 4.20 Beta
Gemini 3 Flash Preview 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 Flash Preview wins 18 of 22 task areas we tested; Grok 4.20 Beta takes 4. Gemini 3 Flash Preview costs 2.3× less per token ($3.5 vs $8 per 1M).
Gemini 3 Flash Preview costs 2.3× less per token ($3.5 vs $8 per 1M).
Task by task
| Task area | Gemini 3 Flash Preview | Grok 4.20 Beta | Winner |
|---|---|---|---|
| RAG, Safety & Grounding |
#13
/ 113
Excellent
|
#93
/ 113
Strong
|
Gemini 3 Flash Preview |
| Training & Education |
#11
/ 110
Excellent
|
#76
/ 110
Strong
|
Gemini 3 Flash Preview |
| Content & Brand |
#39
/ 124
Strong
|
#99
/ 124
Usable
|
Gemini 3 Flash Preview |
| Legal & HR |
#47
/ 110
Excellent
|
#106
/ 110
Strong
|
Gemini 3 Flash Preview |
| Coding |
#22
/ 115
Strong
|
#77
/ 115
Strong
|
Gemini 3 Flash Preview |
| Data & Analytics |
#47
/ 110
Excellent
|
#91
/ 110
Excellent
|
Gemini 3 Flash Preview |
| Creative & Comedy | #51 / 110 | #92 / 110 | Gemini 3 Flash Preview |
| Customer Support |
#34
/ 113
Strong
|
#72
/ 113
Usable
|
Gemini 3 Flash Preview |
| Product & Project Management |
#69
/ 110
Strong
|
#31
/ 110
Excellent
|
Grok 4.20 Beta |
| Knowledge & Docs |
#49
/ 110
Usable
|
#86
/ 110
Usable
|
Gemini 3 Flash Preview |
| Summarization & Meeting Notes |
#61
/ 110
Excellent
|
#95
/ 110
Excellent
|
Gemini 3 Flash Preview |
| Frontend & Landing Pages |
#1
/ 109
Usable
|
#32
/ 109
Needs editing
|
Gemini 3 Flash Preview |
| Landing Pages |
#35
/ 72
Strong
|
#60
/ 72
Usable
|
Gemini 3 Flash Preview |
| Executive Assistant |
#92
/ 112
Usable
|
#69
/ 112
Strong
|
Grok 4.20 Beta |
| Translation & Localization |
#67
/ 110
Excellent
|
#90
/ 110
Strong
|
Gemini 3 Flash Preview |
| Research & Competitive Analysis |
#71
/ 110
Usable
|
#86
/ 110
Needs editing
|
Gemini 3 Flash Preview |
| AI Strategy |
#38
/ 126
Strong
|
#49
/ 126
Strong
|
Gemini 3 Flash Preview |
| Sales |
#35
/ 110
Usable
|
#46
/ 110
Usable
|
Gemini 3 Flash Preview |
| Structured Output |
#34
/ 113
Excellent
|
#43
/ 113
Excellent
|
Gemini 3 Flash Preview |
| Investor & Pitch |
#47
/ 66
Usable
|
#43
/ 66
Usable
|
Grok 4.20 Beta |
| Presentations & Decks |
#52
/ 110
Excellent
|
#56
/ 110
Strong
|
Gemini 3 Flash Preview |
| Chef / Home Cooking |
#39
/ 126
Usable
|
#38
/ 126
Usable
|
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 Flash Preview better than Grok 4.20 Beta?
Across 22 task areas we benchmarked, Gemini 3 Flash Preview ranks higher in 18 and Grok 4.20 Beta in 4.
Which is cheaper, Gemini 3 Flash Preview or Grok 4.20 Beta?
Gemini 3 Flash Preview costs 2.3× less per token ($3.5 vs $8 per 1M).
What is Gemini 3 Flash Preview better at?
Gemini 3 Flash Preview out-ranks Grok 4.20 Beta at RAG, Safety & Grounding, Training & Education, Content & Brand.
What is Grok 4.20 Beta better at?
Grok 4.20 Beta out-ranks Gemini 3 Flash Preview at Product & Project Management, Executive Assistant, Investor & Pitch.
More comparisons
This page is Spring Prompt, running in public
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Prompt × model results
12 test cases · 3 evals