Claude Fable 5
VS
DeepSeek V4 Pro
Claude Fable 5 vs DeepSeek V4 Pro: 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 Fable 5 wins 17 of 22 task areas we tested; DeepSeek V4 Pro takes 5. DeepSeek V4 Pro costs 46.0× less per token ($1.305 vs $60 per 1M).
DeepSeek V4 Pro costs 46.0× less per token ($1.305 vs $60 per 1M).
Task by task
| Task area | Claude Fable 5 | DeepSeek V4 Pro | Winner |
|---|---|---|---|
| AI Strategy |
#1
/ 126
Strong
|
#68
/ 126
Strong
|
Claude Fable 5 |
| Product & Project Management |
#76
/ 110
Strong
|
#12
/ 110
Excellent
|
DeepSeek V4 Pro |
| Data & Analytics |
#3
/ 110
Excellent
|
#60
/ 110
Excellent
|
Claude Fable 5 |
| Frontend & Landing Pages |
#58
/ 109
Needs editing
|
#6
/ 109
Usable
|
DeepSeek V4 Pro |
| Customer Support |
#1
/ 113
Excellent
|
#52
/ 113
Strong
|
Claude Fable 5 |
| Creative & Comedy | #1 / 110 | #50 / 110 | Claude Fable 5 |
| Structured Output |
#68
/ 113
Strong
|
#23
/ 113
Excellent
|
DeepSeek V4 Pro |
| Research & Competitive Analysis |
#3
/ 110
Excellent
|
#44
/ 110
Strong
|
Claude Fable 5 |
| Legal & HR |
#1
/ 110
Excellent
|
#40
/ 110
Excellent
|
Claude Fable 5 |
| Sales |
#5
/ 110
Strong
|
#44
/ 110
Usable
|
Claude Fable 5 |
| Coding |
#11
/ 115
Excellent
|
#43
/ 115
Strong
|
Claude Fable 5 |
| Summarization & Meeting Notes |
#24
/ 110
Excellent
|
#55
/ 110
Excellent
|
Claude Fable 5 |
| Investor & Pitch |
#3
/ 66
Strong
|
#33
/ 66
Strong
|
Claude Fable 5 |
| Chef / Home Cooking |
#3
/ 126
Strong
|
#32
/ 126
Usable
|
Claude Fable 5 |
| Content & Brand |
#1
/ 124
Excellent
|
#29
/ 124
Strong
|
Claude Fable 5 |
| Training & Education |
#16
/ 110
Excellent
|
#41
/ 110
Excellent
|
Claude Fable 5 |
| Executive Assistant |
#22
/ 112
Strong
|
#38
/ 112
Strong
|
Claude Fable 5 |
| Landing Pages |
#1
/ 72
Strong
|
#16
/ 72
Strong
|
Claude Fable 5 |
| Translation & Localization |
#18
/ 110
Excellent
|
#32
/ 110
Excellent
|
Claude Fable 5 |
| Presentations & Decks |
#20
/ 110
Excellent
|
#31
/ 110
Excellent
|
Claude Fable 5 |
| RAG, Safety & Grounding |
#30
/ 113
Excellent
|
#27
/ 113
Excellent
|
DeepSeek V4 Pro |
| Knowledge & Docs |
#27
/ 110
Strong
|
#25
/ 110
Strong
|
DeepSeek V4 Pro |
Rank = position among every model config we tested in that task area (lower is better). Sorted by biggest gap first.
Same task, both models — judged
Both models answered the same test case; an independent judge graded each. Quotes are the judge's actual rationale.
Structured Output
Invoice line items (Extraction)
“The response failed to follow strict JSON formatting by including markdown fences and wrapper text, and hallucinated data such as currency and subtotal.”
“The model perfectly extracted all the requested information into a clean, well-structured JSON format. All values are accurate and grounded in the input text, and there is no wrapper text.”
Frequently asked
Is Claude Fable 5 better than DeepSeek V4 Pro?
Across 22 task areas we benchmarked, Claude Fable 5 ranks higher in 17 and DeepSeek V4 Pro in 5.
Which is cheaper, Claude Fable 5 or DeepSeek V4 Pro?
DeepSeek V4 Pro costs 46.0× less per token ($1.305 vs $60 per 1M).
What is Claude Fable 5 better at?
Claude Fable 5 out-ranks DeepSeek V4 Pro at AI Strategy, Data & Analytics, Customer Support.
What is DeepSeek V4 Pro better at?
DeepSeek V4 Pro out-ranks Claude Fable 5 at Product & Project Management, Frontend & Landing Pages, Structured Output.
More comparisons
This page is Spring Prompt, running in public
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Prompt × model results
12 test cases · 3 evals