Claude Sonnet 4.6
VS
Gemini 3.1 Pro Preview
Claude Sonnet 4.6 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 Sonnet 4.6 and Gemini 3.1 Pro Preview split the 22 task areas we tested 11–11. Gemini 3.1 Pro Preview costs 1.3× less per token ($14 vs $18 per 1M).
Gemini 3.1 Pro Preview costs 1.3× less per token ($14 vs $18 per 1M).
Task by task
| Task area | Claude Sonnet 4.6 | Gemini 3.1 Pro Preview | Winner |
|---|---|---|---|
| Structured Output |
#105
/ 113
Usable
|
#15
/ 113
Excellent
|
Gemini 3.1 Pro Preview |
| RAG, Safety & Grounding |
#73
/ 113
Excellent
|
#8
/ 113
Excellent
|
Gemini 3.1 Pro Preview |
| Customer Support |
#62
/ 113
Strong
|
#2
/ 113
Strong
|
Gemini 3.1 Pro Preview |
| Coding |
#29
/ 115
Strong
|
#64
/ 115
Strong
|
Claude Sonnet 4.6 |
| Data & Analytics |
#6
/ 110
Excellent
|
#39
/ 110
Excellent
|
Claude Sonnet 4.6 |
| Summarization & Meeting Notes |
#37
/ 110
Excellent
|
#4
/ 110
Excellent
|
Gemini 3.1 Pro Preview |
| AI Strategy |
#3
/ 126
Strong
|
#33
/ 126
Strong
|
Claude Sonnet 4.6 |
| Product & Project Management |
#48
/ 110
Strong
|
#25
/ 110
Excellent
|
Gemini 3.1 Pro Preview |
| Content & Brand |
#31
/ 124
Strong
|
#11
/ 124
Strong
|
Gemini 3.1 Pro Preview |
| Sales |
#13
/ 110
Strong
|
#32
/ 110
Strong
|
Claude Sonnet 4.6 |
| Knowledge & Docs |
#35
/ 110
Strong
|
#19
/ 110
Strong
|
Gemini 3.1 Pro Preview |
| Creative & Comedy | #19 / 110 | #4 / 110 | Gemini 3.1 Pro Preview |
| Chef / Home Cooking |
#20
/ 126
Usable
|
#6
/ 126
Strong
|
Gemini 3.1 Pro Preview |
| Legal & HR |
#3
/ 110
Excellent
|
#17
/ 110
Excellent
|
Claude Sonnet 4.6 |
| Executive Assistant |
#1
/ 112
Strong
|
#14
/ 112
Strong
|
Claude Sonnet 4.6 |
| Frontend & Landing Pages |
#23
/ 109
Needs editing
|
#34
/ 109
Needs editing
|
Claude Sonnet 4.6 |
| Presentations & Decks |
#35
/ 110
Excellent
|
#24
/ 110
Excellent
|
Gemini 3.1 Pro Preview |
| Investor & Pitch |
#4
/ 66
Strong
|
#13
/ 66
Strong
|
Claude Sonnet 4.6 |
| Landing Pages |
#5
/ 72
Strong
|
#14
/ 72
Strong
|
Claude Sonnet 4.6 |
| Research & Competitive Analysis |
#35
/ 110
Strong
|
#42
/ 110
Strong
|
Claude Sonnet 4.6 |
| Training & Education |
#9
/ 110
Excellent
|
#4
/ 110
Excellent
|
Gemini 3.1 Pro Preview |
| Translation & Localization |
#13
/ 110
Excellent
|
#14
/ 110
Excellent
|
Claude Sonnet 4.6 |
Rank = position among every model config we tested in that task area (lower is better). Sorted by biggest gap first.
Frequently asked
Is Claude Sonnet 4.6 better than Gemini 3.1 Pro Preview?
They tie across the 22 task areas we benchmarked, at 11 apiece.
Which is cheaper, Claude Sonnet 4.6 or Gemini 3.1 Pro Preview?
Gemini 3.1 Pro Preview costs 1.3× less per token ($14 vs $18 per 1M).
What is Claude Sonnet 4.6 better at?
Claude Sonnet 4.6 out-ranks Gemini 3.1 Pro Preview at Coding, Data & Analytics, AI Strategy.
What is Gemini 3.1 Pro Preview better at?
Gemini 3.1 Pro Preview out-ranks Claude Sonnet 4.6 at Structured Output, RAG, Safety & Grounding, Customer Support.
More comparisons
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Prompt × model results
12 test cases · 3 evals