Claude Opus 4.5
VS
Claude Opus 4.8
Claude Opus 4.5 vs Claude Opus 4.8: 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 Opus 4.8 wins 15 of 22 task areas we tested; Claude Opus 4.5 takes 7.
Task by task
| Task area | Claude Opus 4.5 | Claude Opus 4.8 | Winner |
|---|---|---|---|
| Product & Project Management |
#60
/ 110
Strong
|
#2
/ 110
Excellent
|
Claude Opus 4.8 |
| Customer Support |
#56
/ 113
Strong
|
#8
/ 113
Strong
|
Claude Opus 4.8 |
| Knowledge & Docs |
#47
/ 110
Strong
|
#2
/ 110
Excellent
|
Claude Opus 4.8 |
| RAG, Safety & Grounding |
#52
/ 113
Excellent
|
#11
/ 113
Excellent
|
Claude Opus 4.8 |
| Coding |
#39
/ 115
Strong
|
#3
/ 115
Excellent
|
Claude Opus 4.8 |
| Summarization & Meeting Notes |
#1
/ 110
Excellent
|
#35
/ 110
Excellent
|
Claude Opus 4.5 |
| Translation & Localization |
#5
/ 110
Excellent
|
#35
/ 110
Excellent
|
Claude Opus 4.5 |
| Legal & HR |
#30
/ 110
Excellent
|
#5
/ 110
Excellent
|
Claude Opus 4.8 |
| Training & Education |
#24
/ 110
Excellent
|
#2
/ 110
Excellent
|
Claude Opus 4.8 |
| Structured Output |
#82
/ 113
Strong
|
#61
/ 113
Excellent
|
Claude Opus 4.8 |
| Frontend & Landing Pages |
#2
/ 109
Usable
|
#21
/ 109
Needs editing
|
Claude Opus 4.5 |
| Investor & Pitch |
#10
/ 66
Strong
|
#27
/ 66
Strong
|
Claude Opus 4.5 |
| Content & Brand |
#21
/ 124
Strong
|
#8
/ 124
Strong
|
Claude Opus 4.8 |
| Presentations & Decks |
#45
/ 110
Excellent
|
#32
/ 110
Excellent
|
Claude Opus 4.8 |
| AI Strategy |
#16
/ 126
Strong
|
#4
/ 126
Strong
|
Claude Opus 4.8 |
| Research & Competitive Analysis |
#17
/ 110
Excellent
|
#5
/ 110
Excellent
|
Claude Opus 4.8 |
| Landing Pages |
#7
/ 72
Strong
|
#18
/ 72
Strong
|
Claude Opus 4.5 |
| Creative & Comedy | #8 / 110 | #17 / 110 | Claude Opus 4.5 |
| Data & Analytics |
#9
/ 110
Excellent
|
#2
/ 110
Excellent
|
Claude Opus 4.8 |
| Chef / Home Cooking |
#14
/ 126
Strong
|
#9
/ 126
Strong
|
Claude Opus 4.8 |
| Executive Assistant |
#4
/ 112
Strong
|
#9
/ 112
Strong
|
Claude Opus 4.5 |
| Sales |
#3
/ 110
Strong
|
#1
/ 110
Strong
|
Claude Opus 4.8 |
Rank = position among every model config we tested in that task area (lower is better). Sorted by biggest gap first.
Frequently asked
Is Claude Opus 4.5 better than Claude Opus 4.8?
Across 22 task areas we benchmarked, Claude Opus 4.8 ranks higher in 15 and Claude Opus 4.5 in 7.
What is Claude Opus 4.5 better at?
Claude Opus 4.5 out-ranks Claude Opus 4.8 at Summarization & Meeting Notes, Translation & Localization, Frontend & Landing Pages.
What is Claude Opus 4.8 better at?
Claude Opus 4.8 out-ranks Claude Opus 4.5 at Product & Project Management, Customer Support, Knowledge & Docs.
More comparisons
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