GPT-5.4 Mini vs Mistral Medium 3.1: 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.
GPT-5.4 Mini wins 20 of 22 task areas we tested; Mistral Medium 3.1 takes 2. Mistral Medium 3.1 costs 2.2× less per token ($2.4 vs $5.25 per 1M).
Mistral Medium 3.1 costs 2.2× less per token ($2.4 vs $5.25 per 1M).
Task by task
| Task area | GPT-5.4 Mini | Mistral Medium 3.1 | Winner |
|---|---|---|---|
| Research & Competitive Analysis |
#11
/ 110
Excellent
|
#105
/ 110
Weak
|
GPT-5.4 Mini |
| Structured Output |
#1
/ 113
Excellent
|
#91
/ 113
Strong
|
GPT-5.4 Mini |
| Customer Support |
#21
/ 113
Strong
|
#110
/ 113
Needs editing
|
GPT-5.4 Mini |
| Presentations & Decks |
#16
/ 110
Excellent
|
#105
/ 110
Usable
|
GPT-5.4 Mini |
| Coding |
#24
/ 115
Strong
|
#108
/ 115
Needs editing
|
GPT-5.4 Mini |
| Knowledge & Docs |
#3
/ 110
Excellent
|
#77
/ 110
Usable
|
GPT-5.4 Mini |
| AI Strategy |
#48
/ 126
Strong
|
#120
/ 126
Usable
|
GPT-5.4 Mini |
| RAG, Safety & Grounding |
#42
/ 113
Excellent
|
#111
/ 113
Strong
|
GPT-5.4 Mini |
| Sales |
#40
/ 110
Usable
|
#92
/ 110
Usable
|
GPT-5.4 Mini |
| Creative & Comedy | #56 / 110 | #100 / 110 | GPT-5.4 Mini |
| Legal & HR |
#26
/ 110
Excellent
|
#70
/ 110
Strong
|
GPT-5.4 Mini |
| Chef / Home Cooking |
#83
/ 126
Usable
|
#116
/ 126
Needs editing
|
GPT-5.4 Mini |
| Training & Education |
#79
/ 110
Strong
|
#47
/ 110
Excellent
|
Mistral Medium 3.1 |
| Translation & Localization |
#21
/ 110
Excellent
|
#53
/ 110
Excellent
|
GPT-5.4 Mini |
| Product & Project Management |
#19
/ 110
Excellent
|
#50
/ 110
Strong
|
GPT-5.4 Mini |
| Content & Brand |
#84
/ 124
Usable
|
#110
/ 124
Needs editing
|
GPT-5.4 Mini |
| Data & Analytics |
#65
/ 110
Excellent
|
#87
/ 110
Excellent
|
GPT-5.4 Mini |
| Summarization & Meeting Notes |
#19
/ 110
Excellent
|
#39
/ 110
Excellent
|
GPT-5.4 Mini |
| Landing Pages |
#45
/ 72
Usable
|
#63
/ 72
Usable
|
GPT-5.4 Mini |
| Investor & Pitch |
#52
/ 66
Usable
|
#65
/ 66
Needs editing
|
GPT-5.4 Mini |
| Executive Assistant |
#87
/ 112
Usable
|
#94
/ 112
Usable
|
GPT-5.4 Mini |
| Frontend & Landing Pages |
#38
/ 109
Needs editing
|
#35
/ 109
Needs editing
|
Mistral Medium 3.1 |
Rank = position among every model config we tested in that task area (lower is better). Sorted by biggest gap first.
Frequently asked
Is GPT-5.4 Mini better than Mistral Medium 3.1?
Across 22 task areas we benchmarked, GPT-5.4 Mini ranks higher in 20 and Mistral Medium 3.1 in 2.
Which is cheaper, GPT-5.4 Mini or Mistral Medium 3.1?
Mistral Medium 3.1 costs 2.2× less per token ($2.4 vs $5.25 per 1M).
What is GPT-5.4 Mini better at?
GPT-5.4 Mini out-ranks Mistral Medium 3.1 at Research & Competitive Analysis, Structured Output, Customer Support.
What is Mistral Medium 3.1 better at?
Mistral Medium 3.1 out-ranks GPT-5.4 Mini at Training & Education, Frontend & Landing Pages.
More comparisons
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Prompt × model results
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