Gemini 3.1 Flash Lite
VS
Grok 4.20
Gemini 3.1 Flash Lite vs Grok 4.20: 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 Flash Lite wins 19 of 22 task areas we tested; Grok 4.20 takes 3. Gemini 3.1 Flash Lite costs 2.1× less per token ($1.75 vs $3.75 per 1M).
Gemini 3.1 Flash Lite costs 2.1× less per token ($1.75 vs $3.75 per 1M).
Task by task
| Task area | Gemini 3.1 Flash Lite | Grok 4.20 | Winner |
|---|---|---|---|
| Content & Brand |
#43
/ 124
Strong
|
#118
/ 124
Needs editing
|
Gemini 3.1 Flash Lite |
| Summarization & Meeting Notes |
#13
/ 110
Excellent
|
#85
/ 110
Excellent
|
Gemini 3.1 Flash Lite |
| Translation & Localization |
#39
/ 110
Excellent
|
#98
/ 110
Strong
|
Gemini 3.1 Flash Lite |
| Data & Analytics |
#44
/ 110
Excellent
|
#102
/ 110
Excellent
|
Gemini 3.1 Flash Lite |
| Training & Education |
#33
/ 110
Excellent
|
#88
/ 110
Strong
|
Gemini 3.1 Flash Lite |
| RAG, Safety & Grounding |
#58
/ 113
Excellent
|
#96
/ 113
Strong
|
Gemini 3.1 Flash Lite |
| Knowledge & Docs |
#33
/ 110
Strong
|
#70
/ 110
Usable
|
Gemini 3.1 Flash Lite |
| Presentations & Decks |
#80
/ 110
Strong
|
#46
/ 110
Excellent
|
Grok 4.20 |
| Chef / Home Cooking |
#70
/ 126
Usable
|
#100
/ 126
Needs editing
|
Gemini 3.1 Flash Lite |
| Coding |
#58
/ 115
Strong
|
#86
/ 115
Usable
|
Gemini 3.1 Flash Lite |
| Product & Project Management |
#29
/ 110
Excellent
|
#56
/ 110
Strong
|
Gemini 3.1 Flash Lite |
| Landing Pages |
#43
/ 72
Strong
|
#66
/ 72
Usable
|
Gemini 3.1 Flash Lite |
| Executive Assistant |
#101
/ 112
Usable
|
#83
/ 112
Usable
|
Grok 4.20 |
| Sales |
#67
/ 110
Usable
|
#85
/ 110
Usable
|
Gemini 3.1 Flash Lite |
| Investor & Pitch |
#44
/ 66
Usable
|
#59
/ 66
Usable
|
Gemini 3.1 Flash Lite |
| Customer Support |
#54
/ 113
Strong
|
#68
/ 113
Usable
|
Gemini 3.1 Flash Lite |
| Structured Output |
#36
/ 113
Excellent
|
#48
/ 113
Excellent
|
Gemini 3.1 Flash Lite |
| Creative & Comedy | #85 / 110 | #96 / 110 | Gemini 3.1 Flash Lite |
| AI Strategy |
#54
/ 126
Strong
|
#59
/ 126
Strong
|
Gemini 3.1 Flash Lite |
| Frontend & Landing Pages |
#10
/ 109
Usable
|
#15
/ 109
Needs editing
|
Gemini 3.1 Flash Lite |
| Research & Competitive Analysis |
#56
/ 110
Usable
|
#52
/ 110
Usable
|
Grok 4.20 |
| Legal & HR |
#86
/ 110
Strong
|
#87
/ 110
Strong
|
Gemini 3.1 Flash Lite |
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 Flash Lite better than Grok 4.20?
Across 22 task areas we benchmarked, Gemini 3.1 Flash Lite ranks higher in 19 and Grok 4.20 in 3.
Which is cheaper, Gemini 3.1 Flash Lite or Grok 4.20?
Gemini 3.1 Flash Lite costs 2.1× less per token ($1.75 vs $3.75 per 1M).
What is Gemini 3.1 Flash Lite better at?
Gemini 3.1 Flash Lite out-ranks Grok 4.20 at Content & Brand, Summarization & Meeting Notes, Translation & Localization.
What is Grok 4.20 better at?
Grok 4.20 out-ranks Gemini 3.1 Flash Lite at Presentations & Decks, Executive Assistant, Research & Competitive Analysis.
More comparisons
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Prompt × model results
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