DeepSeek V3.1 Terminus
VS
GPT-5.4 Mini
DeepSeek V3.1 Terminus vs GPT-5.4 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.
GPT-5.4 Mini wins 17 of 22 task areas we tested; DeepSeek V3.1 Terminus takes 5. DeepSeek V3.1 Terminus costs 4.3× less per token ($1.22 vs $5.25 per 1M).
DeepSeek V3.1 Terminus costs 4.3× less per token ($1.22 vs $5.25 per 1M).
Task by task
| Task area | DeepSeek V3.1 Terminus | GPT-5.4 Mini | Winner |
|---|---|---|---|
| Translation & Localization |
#101
/ 110
Strong
|
#21
/ 110
Excellent
|
GPT-5.4 Mini |
| Presentations & Decks |
#91
/ 110
Strong
|
#16
/ 110
Excellent
|
GPT-5.4 Mini |
| Legal & HR |
#95
/ 110
Strong
|
#26
/ 110
Excellent
|
GPT-5.4 Mini |
| Coding |
#92
/ 115
Usable
|
#24
/ 115
Strong
|
GPT-5.4 Mini |
| Structured Output |
#63
/ 113
Excellent
|
#1
/ 113
Excellent
|
GPT-5.4 Mini |
| Sales |
#97
/ 110
Needs editing
|
#40
/ 110
Usable
|
GPT-5.4 Mini |
| AI Strategy |
#101
/ 126
Usable
|
#48
/ 126
Strong
|
GPT-5.4 Mini |
| Customer Support |
#69
/ 113
Usable
|
#21
/ 113
Strong
|
GPT-5.4 Mini |
| Training & Education |
#31
/ 110
Excellent
|
#79
/ 110
Strong
|
DeepSeek V3.1 Terminus |
| Knowledge & Docs |
#50
/ 110
Usable
|
#3
/ 110
Excellent
|
GPT-5.4 Mini |
| RAG, Safety & Grounding |
#85
/ 113
Excellent
|
#42
/ 113
Excellent
|
GPT-5.4 Mini |
| Research & Competitive Analysis |
#46
/ 110
Strong
|
#11
/ 110
Excellent
|
GPT-5.4 Mini |
| Creative & Comedy | #89 / 110 | #56 / 110 | GPT-5.4 Mini |
| Product & Project Management |
#36
/ 110
Strong
|
#19
/ 110
Excellent
|
GPT-5.4 Mini |
| Content & Brand |
#100
/ 124
Usable
|
#84
/ 124
Usable
|
GPT-5.4 Mini |
| Summarization & Meeting Notes |
#32
/ 110
Excellent
|
#19
/ 110
Excellent
|
GPT-5.4 Mini |
| Chef / Home Cooking |
#95
/ 126
Usable
|
#83
/ 126
Usable
|
GPT-5.4 Mini |
| Investor & Pitch |
#64
/ 66
Needs editing
|
#52
/ 66
Usable
|
GPT-5.4 Mini |
| Executive Assistant |
#77
/ 112
Usable
|
#87
/ 112
Usable
|
DeepSeek V3.1 Terminus |
| Data & Analytics |
#56
/ 110
Excellent
|
#65
/ 110
Excellent
|
DeepSeek V3.1 Terminus |
| Frontend & Landing Pages |
#33
/ 109
Needs editing
|
#38
/ 109
Needs editing
|
DeepSeek V3.1 Terminus |
| Landing Pages |
#44
/ 72
Strong
|
#45
/ 72
Usable
|
DeepSeek V3.1 Terminus |
Rank = position among every model config we tested in that task area (lower is better). Sorted by biggest gap first.
Frequently asked
Is DeepSeek V3.1 Terminus better than GPT-5.4 Mini?
Across 22 task areas we benchmarked, GPT-5.4 Mini ranks higher in 17 and DeepSeek V3.1 Terminus in 5.
Which is cheaper, DeepSeek V3.1 Terminus or GPT-5.4 Mini?
DeepSeek V3.1 Terminus costs 4.3× less per token ($1.22 vs $5.25 per 1M).
What is DeepSeek V3.1 Terminus better at?
DeepSeek V3.1 Terminus out-ranks GPT-5.4 Mini at Training & Education, Executive Assistant, Data & Analytics.
What is GPT-5.4 Mini better at?
GPT-5.4 Mini out-ranks DeepSeek V3.1 Terminus at Translation & Localization, Presentations & Decks, Legal & HR.
More comparisons
This page is Spring Prompt, running in public
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Prompt × model results
12 test cases · 3 evals