Claude Opus 4.5
VS
Gemini 3.1 Pro Preview
Claude Opus 4.5 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.
Claude Opus 4.5 and Gemini 3.1 Pro Preview split the 22 task areas we tested 11–11. Gemini 3.1 Pro Preview costs 2.1× less per token ($14 vs $30 per 1M).
Gemini 3.1 Pro Preview costs 2.1× less per token ($14 vs $30 per 1M).
Task by task
| Task area | Claude Opus 4.5 | Gemini 3.1 Pro Preview | Winner |
|---|---|---|---|
| Structured Output |
#82
/ 113
Strong
|
#15
/ 113
Excellent
|
Gemini 3.1 Pro Preview |
| Customer Support |
#56
/ 113
Strong
|
#2
/ 113
Strong
|
Gemini 3.1 Pro Preview |
| RAG, Safety & Grounding |
#52
/ 113
Excellent
|
#8
/ 113
Excellent
|
Gemini 3.1 Pro Preview |
| Product & Project Management |
#60
/ 110
Strong
|
#25
/ 110
Excellent
|
Gemini 3.1 Pro Preview |
| Frontend & Landing Pages |
#2
/ 109
Usable
|
#34
/ 109
Needs editing
|
Claude Opus 4.5 |
| Data & Analytics |
#9
/ 110
Excellent
|
#39
/ 110
Excellent
|
Claude Opus 4.5 |
| Sales |
#3
/ 110
Strong
|
#32
/ 110
Strong
|
Claude Opus 4.5 |
| Knowledge & Docs |
#47
/ 110
Strong
|
#19
/ 110
Strong
|
Gemini 3.1 Pro Preview |
| Coding |
#39
/ 115
Strong
|
#64
/ 115
Strong
|
Claude Opus 4.5 |
| Research & Competitive Analysis |
#17
/ 110
Excellent
|
#42
/ 110
Strong
|
Claude Opus 4.5 |
| Presentations & Decks |
#45
/ 110
Excellent
|
#24
/ 110
Excellent
|
Gemini 3.1 Pro Preview |
| Training & Education |
#24
/ 110
Excellent
|
#4
/ 110
Excellent
|
Gemini 3.1 Pro Preview |
| AI Strategy |
#16
/ 126
Strong
|
#33
/ 126
Strong
|
Claude Opus 4.5 |
| Legal & HR |
#30
/ 110
Excellent
|
#17
/ 110
Excellent
|
Gemini 3.1 Pro Preview |
| Content & Brand |
#21
/ 124
Strong
|
#11
/ 124
Strong
|
Gemini 3.1 Pro Preview |
| Executive Assistant |
#4
/ 112
Strong
|
#14
/ 112
Strong
|
Claude Opus 4.5 |
| Translation & Localization |
#5
/ 110
Excellent
|
#14
/ 110
Excellent
|
Claude Opus 4.5 |
| Chef / Home Cooking |
#14
/ 126
Strong
|
#6
/ 126
Strong
|
Gemini 3.1 Pro Preview |
| Landing Pages |
#7
/ 72
Strong
|
#14
/ 72
Strong
|
Claude Opus 4.5 |
| Creative & Comedy | #8 / 110 | #4 / 110 | Gemini 3.1 Pro Preview |
| Investor & Pitch |
#10
/ 66
Strong
|
#13
/ 66
Strong
|
Claude Opus 4.5 |
| Summarization & Meeting Notes |
#1
/ 110
Excellent
|
#4
/ 110
Excellent
|
Claude Opus 4.5 |
Rank = position among every model config we tested in that task area (lower is better). Sorted by biggest gap first.
Frequently asked
Is Claude Opus 4.5 better than Gemini 3.1 Pro Preview?
They tie across the 22 task areas we benchmarked, at 11 apiece.
Which is cheaper, Claude Opus 4.5 or Gemini 3.1 Pro Preview?
Gemini 3.1 Pro Preview costs 2.1× less per token ($14 vs $30 per 1M).
What is Claude Opus 4.5 better at?
Claude Opus 4.5 out-ranks Gemini 3.1 Pro Preview at Frontend & Landing Pages, Data & Analytics, Sales.
What is Gemini 3.1 Pro Preview better at?
Gemini 3.1 Pro Preview out-ranks Claude Opus 4.5 at Structured Output, Customer Support, RAG, Safety & Grounding.
More comparisons
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