Claude Haiku 4.5
VS
DeepSeek V4 Pro
Claude Haiku 4.5 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.
DeepSeek V4 Pro wins 18 of 22 task areas we tested; Claude Haiku 4.5 takes 4. DeepSeek V4 Pro costs 4.6× less per token ($1.305 vs $6 per 1M).
DeepSeek V4 Pro costs 4.6× less per token ($1.305 vs $6 per 1M).
Task by task
| Task area | Claude Haiku 4.5 | DeepSeek V4 Pro | Winner |
|---|---|---|---|
| Structured Output |
#109
/ 113
Usable
|
#23
/ 113
Excellent
|
DeepSeek V4 Pro |
| Chef / Home Cooking |
#113
/ 126
Needs editing
|
#32
/ 126
Usable
|
DeepSeek V4 Pro |
| RAG, Safety & Grounding |
#97
/ 113
Strong
|
#27
/ 113
Excellent
|
DeepSeek V4 Pro |
| Content & Brand |
#89
/ 124
Usable
|
#29
/ 124
Strong
|
DeepSeek V4 Pro |
| Presentations & Decks |
#88
/ 110
Strong
|
#31
/ 110
Excellent
|
DeepSeek V4 Pro |
| Coding |
#94
/ 115
Usable
|
#43
/ 115
Strong
|
DeepSeek V4 Pro |
| Customer Support |
#99
/ 113
Usable
|
#52
/ 113
Strong
|
DeepSeek V4 Pro |
| Knowledge & Docs |
#71
/ 110
Usable
|
#25
/ 110
Strong
|
DeepSeek V4 Pro |
| Landing Pages |
#61
/ 72
Usable
|
#16
/ 72
Strong
|
DeepSeek V4 Pro |
| Sales |
#80
/ 110
Usable
|
#44
/ 110
Usable
|
DeepSeek V4 Pro |
| Executive Assistant |
#73
/ 112
Strong
|
#38
/ 112
Strong
|
DeepSeek V4 Pro |
| Creative & Comedy | #84 / 110 | #50 / 110 | DeepSeek V4 Pro |
| Investor & Pitch |
#63
/ 66
Needs editing
|
#33
/ 66
Strong
|
DeepSeek V4 Pro |
| Summarization & Meeting Notes |
#27
/ 110
Excellent
|
#55
/ 110
Excellent
|
Claude Haiku 4.5 |
| Product & Project Management |
#38
/ 110
Strong
|
#12
/ 110
Excellent
|
DeepSeek V4 Pro |
| AI Strategy |
#91
/ 126
Strong
|
#68
/ 126
Strong
|
DeepSeek V4 Pro |
| Research & Competitive Analysis |
#59
/ 110
Usable
|
#44
/ 110
Strong
|
DeepSeek V4 Pro |
| Legal & HR |
#48
/ 110
Excellent
|
#40
/ 110
Excellent
|
DeepSeek V4 Pro |
| Data & Analytics |
#53
/ 110
Excellent
|
#60
/ 110
Excellent
|
Claude Haiku 4.5 |
| Training & Education |
#36
/ 110
Excellent
|
#41
/ 110
Excellent
|
Claude Haiku 4.5 |
| Translation & Localization |
#27
/ 110
Excellent
|
#32
/ 110
Excellent
|
Claude Haiku 4.5 |
| Frontend & Landing Pages |
#7
/ 109
Usable
|
#6
/ 109
Usable
|
DeepSeek V4 Pro |
Rank = position among every model config we tested in that task area (lower is better). Sorted by biggest gap first.
Frequently asked
Is Claude Haiku 4.5 better than DeepSeek V4 Pro?
Across 22 task areas we benchmarked, DeepSeek V4 Pro ranks higher in 18 and Claude Haiku 4.5 in 4.
Which is cheaper, Claude Haiku 4.5 or DeepSeek V4 Pro?
DeepSeek V4 Pro costs 4.6× less per token ($1.305 vs $6 per 1M).
What is Claude Haiku 4.5 better at?
Claude Haiku 4.5 out-ranks DeepSeek V4 Pro at Summarization & Meeting Notes, Data & Analytics, Training & Education.
What is DeepSeek V4 Pro better at?
DeepSeek V4 Pro out-ranks Claude Haiku 4.5 at Structured Output, Chef / Home Cooking, RAG, Safety & Grounding.
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