Gemini 3 Flash Preview
VS
GPT-5 Mini
Gemini 3 Flash Preview vs GPT-5 Mini: 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 Flash Preview wins 14 of 22 task areas we tested; GPT-5 Mini takes 8. GPT-5 Mini costs 1.6× less per token ($2.25 vs $3.5 per 1M).
GPT-5 Mini costs 1.6× less per token ($2.25 vs $3.5 per 1M).
Task by task
| Task area | Gemini 3 Flash Preview | GPT-5 Mini | Winner |
|---|---|---|---|
| Customer Support |
#34
/ 113
Strong
|
#104
/ 113
Usable
|
Gemini 3 Flash Preview |
| Training & Education |
#11
/ 110
Excellent
|
#81
/ 110
Strong
|
Gemini 3 Flash Preview |
| Product & Project Management |
#69
/ 110
Strong
|
#1
/ 110
Excellent
|
GPT-5 Mini |
| Sales |
#35
/ 110
Usable
|
#102
/ 110
Needs editing
|
Gemini 3 Flash Preview |
| RAG, Safety & Grounding |
#13
/ 113
Excellent
|
#78
/ 113
Excellent
|
Gemini 3 Flash Preview |
| AI Strategy |
#38
/ 126
Strong
|
#100
/ 126
Usable
|
Gemini 3 Flash Preview |
| Research & Competitive Analysis |
#71
/ 110
Usable
|
#21
/ 110
Excellent
|
GPT-5 Mini |
| Legal & HR |
#47
/ 110
Excellent
|
#10
/ 110
Excellent
|
GPT-5 Mini |
| Content & Brand |
#39
/ 124
Strong
|
#69
/ 124
Strong
|
Gemini 3 Flash Preview |
| Data & Analytics |
#47
/ 110
Excellent
|
#27
/ 110
Excellent
|
GPT-5 Mini |
| Summarization & Meeting Notes |
#61
/ 110
Excellent
|
#81
/ 110
Excellent
|
Gemini 3 Flash Preview |
| Creative & Comedy | #51 / 110 | #70 / 110 | Gemini 3 Flash Preview |
| Structured Output |
#34
/ 113
Excellent
|
#17
/ 113
Excellent
|
GPT-5 Mini |
| Executive Assistant |
#92
/ 112
Usable
|
#108
/ 112
Usable
|
Gemini 3 Flash Preview |
| Coding |
#22
/ 115
Strong
|
#37
/ 115
Strong
|
Gemini 3 Flash Preview |
| Landing Pages |
#35
/ 72
Strong
|
#50
/ 72
Usable
|
Gemini 3 Flash Preview |
| Translation & Localization |
#67
/ 110
Excellent
|
#52
/ 110
Excellent
|
GPT-5 Mini |
| Presentations & Decks |
#52
/ 110
Excellent
|
#39
/ 110
Excellent
|
GPT-5 Mini |
| Frontend & Landing Pages |
#1
/ 109
Usable
|
#12
/ 109
Needs editing
|
Gemini 3 Flash Preview |
| Knowledge & Docs |
#49
/ 110
Usable
|
#41
/ 110
Strong
|
GPT-5 Mini |
| Chef / Home Cooking |
#39
/ 126
Usable
|
#45
/ 126
Usable
|
Gemini 3 Flash Preview |
| Investor & Pitch |
#47
/ 66
Usable
|
#50
/ 66
Usable
|
Gemini 3 Flash 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 Flash Preview better than GPT-5 Mini?
Across 22 task areas we benchmarked, Gemini 3 Flash Preview ranks higher in 14 and GPT-5 Mini in 8.
Which is cheaper, Gemini 3 Flash Preview or GPT-5 Mini?
GPT-5 Mini costs 1.6× less per token ($2.25 vs $3.5 per 1M).
What is Gemini 3 Flash Preview better at?
Gemini 3 Flash Preview out-ranks GPT-5 Mini at Customer Support, Training & Education, Sales.
What is GPT-5 Mini better at?
GPT-5 Mini out-ranks Gemini 3 Flash Preview at Product & Project Management, Research & Competitive Analysis, Legal & HR.
More comparisons
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Prompt × model results
12 test cases · 3 evals