Claude Sonnet 4.5
VS
GLM 5.2
Claude Sonnet 4.5 vs GLM 5.2: 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.
GLM 5.2 wins 16 of 22 task areas we tested; Claude Sonnet 4.5 takes 6. GLM 5.2 costs 4.8× less per token ($3.76 vs $18 per 1M).
GLM 5.2 costs 4.8× less per token ($3.76 vs $18 per 1M).
Task by task
| Task area | Claude Sonnet 4.5 | GLM 5.2 | Winner |
|---|---|---|---|
| Product & Project Management |
#71
/ 110
Strong
|
#11
/ 110
Excellent
|
GLM 5.2 |
| Content & Brand |
#74
/ 124
Usable
|
#19
/ 124
Strong
|
GLM 5.2 |
| Structured Output |
#80
/ 113
Strong
|
#25
/ 113
Excellent
|
GLM 5.2 |
| Coding |
#62
/ 115
Strong
|
#23
/ 115
Strong
|
GLM 5.2 |
| AI Strategy |
#67
/ 126
Strong
|
#34
/ 126
Strong
|
GLM 5.2 |
| Legal & HR |
#69
/ 110
Strong
|
#36
/ 110
Excellent
|
GLM 5.2 |
| RAG, Safety & Grounding |
#39
/ 113
Excellent
|
#6
/ 113
Excellent
|
GLM 5.2 |
| Sales |
#10
/ 110
Strong
|
#39
/ 110
Usable
|
Claude Sonnet 4.5 |
| Customer Support |
#43
/ 113
Strong
|
#16
/ 113
Strong
|
GLM 5.2 |
| Training & Education |
#51
/ 110
Excellent
|
#29
/ 110
Excellent
|
GLM 5.2 |
| Chef / Home Cooking |
#80
/ 126
Usable
|
#59
/ 126
Usable
|
GLM 5.2 |
| Creative & Comedy | #66 / 110 | #46 / 110 | GLM 5.2 |
| Investor & Pitch |
#42
/ 66
Usable
|
#24
/ 66
Strong
|
GLM 5.2 |
| Presentations & Decks |
#43
/ 110
Excellent
|
#25
/ 110
Excellent
|
GLM 5.2 |
| Executive Assistant |
#31
/ 112
Strong
|
#43
/ 112
Strong
|
Claude Sonnet 4.5 |
| Frontend & Landing Pages |
#29
/ 109
Needs editing
|
#18
/ 109
Needs editing
|
GLM 5.2 |
| Research & Competitive Analysis |
#39
/ 110
Strong
|
#50
/ 110
Usable
|
Claude Sonnet 4.5 |
| Data & Analytics |
#33
/ 110
Excellent
|
#41
/ 110
Excellent
|
Claude Sonnet 4.5 |
| Knowledge & Docs |
#28
/ 110
Strong
|
#21
/ 110
Strong
|
GLM 5.2 |
| Summarization & Meeting Notes |
#2
/ 110
Excellent
|
#9
/ 110
Excellent
|
Claude Sonnet 4.5 |
| Landing Pages |
#30
/ 72
Strong
|
#26
/ 72
Strong
|
GLM 5.2 |
| Translation & Localization |
#25
/ 110
Excellent
|
#28
/ 110
Excellent
|
Claude Sonnet 4.5 |
Rank = position among every model config we tested in that task area (lower is better). Sorted by biggest gap first.
Frequently asked
Is Claude Sonnet 4.5 better than GLM 5.2?
Across 22 task areas we benchmarked, GLM 5.2 ranks higher in 16 and Claude Sonnet 4.5 in 6.
Which is cheaper, Claude Sonnet 4.5 or GLM 5.2?
GLM 5.2 costs 4.8× less per token ($3.76 vs $18 per 1M).
What is Claude Sonnet 4.5 better at?
Claude Sonnet 4.5 out-ranks GLM 5.2 at Sales, Executive Assistant, Research & Competitive Analysis.
What is GLM 5.2 better at?
GLM 5.2 out-ranks Claude Sonnet 4.5 at Product & Project Management, Content & Brand, Structured Output.
More comparisons
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Prompt × model results
12 test cases · 3 evals