Gemini 3.1 Flash Lite
VS
Gemini 3.1 Pro Preview
Gemini 3.1 Flash Lite vs Gemini 3.1 Pro Preview: 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 20 of 22 task areas we tested; Gemini 3.1 Flash Lite takes 2. Gemini 3.1 Flash Lite costs 8.0× less per token ($1.75 vs $14 per 1M).
Gemini 3.1 Flash Lite costs 8.0× less per token ($1.75 vs $14 per 1M).
Task by task
| Task area | Gemini 3.1 Flash Lite | Gemini 3.1 Pro Preview | Winner |
|---|---|---|---|
| Executive Assistant |
#101
/ 112
Usable
|
#14
/ 112
Strong
|
Gemini 3.1 Pro Preview |
| Creative & Comedy | #85 / 110 | #4 / 110 | Gemini 3.1 Pro Preview |
| Legal & HR |
#86
/ 110
Strong
|
#17
/ 110
Excellent
|
Gemini 3.1 Pro Preview |
| Chef / Home Cooking |
#70
/ 126
Usable
|
#6
/ 126
Strong
|
Gemini 3.1 Pro Preview |
| Presentations & Decks |
#80
/ 110
Strong
|
#24
/ 110
Excellent
|
Gemini 3.1 Pro Preview |
| Customer Support |
#54
/ 113
Strong
|
#2
/ 113
Strong
|
Gemini 3.1 Pro Preview |
| RAG, Safety & Grounding |
#58
/ 113
Excellent
|
#8
/ 113
Excellent
|
Gemini 3.1 Pro Preview |
| Sales |
#67
/ 110
Usable
|
#32
/ 110
Strong
|
Gemini 3.1 Pro Preview |
| Content & Brand |
#43
/ 124
Strong
|
#11
/ 124
Strong
|
Gemini 3.1 Pro Preview |
| Investor & Pitch |
#44
/ 66
Usable
|
#13
/ 66
Strong
|
Gemini 3.1 Pro Preview |
| Landing Pages |
#43
/ 72
Strong
|
#14
/ 72
Strong
|
Gemini 3.1 Pro Preview |
| Training & Education |
#33
/ 110
Excellent
|
#4
/ 110
Excellent
|
Gemini 3.1 Pro Preview |
| Translation & Localization |
#39
/ 110
Excellent
|
#14
/ 110
Excellent
|
Gemini 3.1 Pro Preview |
| Frontend & Landing Pages |
#10
/ 109
Usable
|
#34
/ 109
Needs editing
|
Gemini 3.1 Flash Lite |
| AI Strategy |
#54
/ 126
Strong
|
#33
/ 126
Strong
|
Gemini 3.1 Pro Preview |
| Structured Output |
#36
/ 113
Excellent
|
#15
/ 113
Excellent
|
Gemini 3.1 Pro Preview |
| Knowledge & Docs |
#33
/ 110
Strong
|
#19
/ 110
Strong
|
Gemini 3.1 Pro Preview |
| Research & Competitive Analysis |
#56
/ 110
Usable
|
#42
/ 110
Strong
|
Gemini 3.1 Pro Preview |
| Summarization & Meeting Notes |
#13
/ 110
Excellent
|
#4
/ 110
Excellent
|
Gemini 3.1 Pro Preview |
| Coding |
#58
/ 115
Strong
|
#64
/ 115
Strong
|
Gemini 3.1 Flash Lite |
| Data & Analytics |
#44
/ 110
Excellent
|
#39
/ 110
Excellent
|
Gemini 3.1 Pro Preview |
| Product & Project Management |
#29
/ 110
Excellent
|
#25
/ 110
Excellent
|
Gemini 3.1 Pro Preview |
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 Gemini 3.1 Pro Preview?
Across 22 task areas we benchmarked, Gemini 3.1 Pro Preview ranks higher in 20 and Gemini 3.1 Flash Lite in 2.
Which is cheaper, Gemini 3.1 Flash Lite or Gemini 3.1 Pro Preview?
Gemini 3.1 Flash Lite costs 8.0× less per token ($1.75 vs $14 per 1M).
What is Gemini 3.1 Flash Lite better at?
Gemini 3.1 Flash Lite out-ranks Gemini 3.1 Pro Preview at Frontend & Landing Pages, Coding.
What is Gemini 3.1 Pro Preview better at?
Gemini 3.1 Pro Preview out-ranks Gemini 3.1 Flash Lite at Executive Assistant, Creative & Comedy, Legal & HR.
More comparisons
This page is Spring Prompt, running in public
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Prompt × model results
12 test cases · 3 evals