Claude Sonnet 5
VS
Gemini 3.1 Pro Preview
Claude Sonnet 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.
Gemini 3.1 Pro Preview wins 14 of 22 task areas we tested; Claude Sonnet 5 takes 8. Claude Sonnet 5 costs 1.2× less per token ($12 vs $14 per 1M).
Claude Sonnet 5 costs 1.2× less per token ($12 vs $14 per 1M).
Task by task
| Task area | Claude Sonnet 5 | Gemini 3.1 Pro Preview | Winner |
|---|---|---|---|
| RAG, Safety & Grounding |
#86
/ 113
Excellent
|
#8
/ 113
Excellent
|
Gemini 3.1 Pro Preview |
| Creative & Comedy | #79 / 110 | #4 / 110 | Gemini 3.1 Pro Preview |
| Coding |
#6
/ 115
Excellent
|
#64
/ 115
Strong
|
Claude Sonnet 5 |
| Executive Assistant |
#72
/ 112
Strong
|
#14
/ 112
Strong
|
Gemini 3.1 Pro Preview |
| Content & Brand |
#67
/ 124
Strong
|
#11
/ 124
Strong
|
Gemini 3.1 Pro Preview |
| Customer Support |
#57
/ 113
Strong
|
#2
/ 113
Strong
|
Gemini 3.1 Pro Preview |
| Structured Output |
#69
/ 113
Strong
|
#15
/ 113
Excellent
|
Gemini 3.1 Pro Preview |
| Summarization & Meeting Notes |
#58
/ 110
Excellent
|
#4
/ 110
Excellent
|
Gemini 3.1 Pro Preview |
| Training & Education |
#52
/ 110
Excellent
|
#4
/ 110
Excellent
|
Gemini 3.1 Pro Preview |
| Legal & HR |
#57
/ 110
Excellent
|
#17
/ 110
Excellent
|
Gemini 3.1 Pro Preview |
| Product & Project Management |
#61
/ 110
Strong
|
#25
/ 110
Excellent
|
Gemini 3.1 Pro Preview |
| AI Strategy |
#2
/ 126
Strong
|
#33
/ 126
Strong
|
Claude Sonnet 5 |
| Research & Competitive Analysis |
#15
/ 110
Excellent
|
#42
/ 110
Strong
|
Claude Sonnet 5 |
| Translation & Localization |
#41
/ 110
Excellent
|
#14
/ 110
Excellent
|
Gemini 3.1 Pro Preview |
| Investor & Pitch |
#39
/ 66
Usable
|
#13
/ 66
Strong
|
Gemini 3.1 Pro Preview |
| Data & Analytics |
#16
/ 110
Excellent
|
#39
/ 110
Excellent
|
Claude Sonnet 5 |
| Frontend & Landing Pages |
#57
/ 109
Needs editing
|
#34
/ 109
Needs editing
|
Gemini 3.1 Pro Preview |
| Chef / Home Cooking |
#28
/ 126
Usable
|
#6
/ 126
Strong
|
Gemini 3.1 Pro Preview |
| Sales |
#16
/ 110
Strong
|
#32
/ 110
Strong
|
Claude Sonnet 5 |
| Landing Pages |
#12
/ 72
Strong
|
#14
/ 72
Strong
|
Claude Sonnet 5 |
| Presentations & Decks |
#22
/ 110
Excellent
|
#24
/ 110
Excellent
|
Claude Sonnet 5 |
| Knowledge & Docs |
#18
/ 110
Strong
|
#19
/ 110
Strong
|
Claude Sonnet 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 Sonnet 5 better than Gemini 3.1 Pro Preview?
Across 22 task areas we benchmarked, Gemini 3.1 Pro Preview ranks higher in 14 and Claude Sonnet 5 in 8.
Which is cheaper, Claude Sonnet 5 or Gemini 3.1 Pro Preview?
Claude Sonnet 5 costs 1.2× less per token ($12 vs $14 per 1M).
What is Claude Sonnet 5 better at?
Claude Sonnet 5 out-ranks Gemini 3.1 Pro Preview at Coding, AI Strategy, Research & Competitive Analysis.
What is Gemini 3.1 Pro Preview better at?
Gemini 3.1 Pro Preview out-ranks Claude Sonnet 5 at RAG, Safety & Grounding, Creative & Comedy, Executive Assistant.
More comparisons
This page is Spring Prompt, running in public
We just did this for every model. Do it for your prompt.
The rankings above come from running real tasks through real models and scoring every output. Spring Prompt is that same engine — pointed at your prompt, your test cases, and your definition of good.
- Generate test cases from your prompt — no eval set required to start.
- Compare models side by side with quality, cost and latency in one matrix.
- Optimise the winner until the scores say it's ready to ship.
Prompt × model results
12 test cases · 3 evals