Gemini 3.1 Pro Preview
VS
Grok 4.20 Beta
Gemini 3.1 Pro 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 3.1 Pro Preview wins 21 of 22 task areas we tested; Grok 4.20 Beta takes 1. Grok 4.20 Beta costs 1.8× less per token ($8 vs $14 per 1M).
Grok 4.20 Beta costs 1.8× less per token ($8 vs $14 per 1M).
Task by task
| Task area | Gemini 3.1 Pro Preview | Grok 4.20 Beta | Winner |
|---|---|---|---|
| Summarization & Meeting Notes |
#4
/ 110
Excellent
|
#95
/ 110
Excellent
|
Gemini 3.1 Pro Preview |
| Legal & HR |
#17
/ 110
Excellent
|
#106
/ 110
Strong
|
Gemini 3.1 Pro Preview |
| Content & Brand |
#11
/ 124
Strong
|
#99
/ 124
Usable
|
Gemini 3.1 Pro Preview |
| Creative & Comedy | #4 / 110 | #92 / 110 | Gemini 3.1 Pro Preview |
| RAG, Safety & Grounding |
#8
/ 113
Excellent
|
#93
/ 113
Strong
|
Gemini 3.1 Pro Preview |
| Translation & Localization |
#14
/ 110
Excellent
|
#90
/ 110
Strong
|
Gemini 3.1 Pro Preview |
| Training & Education |
#4
/ 110
Excellent
|
#76
/ 110
Strong
|
Gemini 3.1 Pro Preview |
| Customer Support |
#2
/ 113
Strong
|
#72
/ 113
Usable
|
Gemini 3.1 Pro Preview |
| Knowledge & Docs |
#19
/ 110
Strong
|
#86
/ 110
Usable
|
Gemini 3.1 Pro Preview |
| Executive Assistant |
#14
/ 112
Strong
|
#69
/ 112
Strong
|
Gemini 3.1 Pro Preview |
| Data & Analytics |
#39
/ 110
Excellent
|
#91
/ 110
Excellent
|
Gemini 3.1 Pro Preview |
| Landing Pages |
#14
/ 72
Strong
|
#60
/ 72
Usable
|
Gemini 3.1 Pro Preview |
| Research & Competitive Analysis |
#42
/ 110
Strong
|
#86
/ 110
Needs editing
|
Gemini 3.1 Pro Preview |
| Chef / Home Cooking |
#6
/ 126
Strong
|
#38
/ 126
Usable
|
Gemini 3.1 Pro Preview |
| Presentations & Decks |
#24
/ 110
Excellent
|
#56
/ 110
Strong
|
Gemini 3.1 Pro Preview |
| Investor & Pitch |
#13
/ 66
Strong
|
#43
/ 66
Usable
|
Gemini 3.1 Pro Preview |
| Structured Output |
#15
/ 113
Excellent
|
#43
/ 113
Excellent
|
Gemini 3.1 Pro Preview |
| AI Strategy |
#33
/ 126
Strong
|
#49
/ 126
Strong
|
Gemini 3.1 Pro Preview |
| Sales |
#32
/ 110
Strong
|
#46
/ 110
Usable
|
Gemini 3.1 Pro Preview |
| Coding |
#64
/ 115
Strong
|
#77
/ 115
Strong
|
Gemini 3.1 Pro Preview |
| Product & Project Management |
#25
/ 110
Excellent
|
#31
/ 110
Excellent
|
Gemini 3.1 Pro Preview |
| Frontend & Landing Pages |
#34
/ 109
Needs editing
|
#32
/ 109
Needs editing
|
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 3.1 Pro Preview better than Grok 4.20 Beta?
Across 22 task areas we benchmarked, Gemini 3.1 Pro Preview ranks higher in 21 and Grok 4.20 Beta in 1.
Which is cheaper, Gemini 3.1 Pro Preview or Grok 4.20 Beta?
Grok 4.20 Beta costs 1.8× less per token ($8 vs $14 per 1M).
What is Gemini 3.1 Pro Preview better at?
Gemini 3.1 Pro Preview out-ranks Grok 4.20 Beta at Summarization & Meeting Notes, Legal & HR, Content & Brand.
What is Grok 4.20 Beta better at?
Grok 4.20 Beta out-ranks Gemini 3.1 Pro Preview at Frontend & Landing Pages.
More comparisons
This page is Spring Prompt, running in public
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Prompt × model results
12 test cases · 3 evals