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Anthropic Claude Haiku 4.5 VS Z.ai GLM 5.2

Claude Haiku 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 20 of 22 task areas we tested; Claude Haiku 4.5 takes 2. GLM 5.2 costs 1.6× less per token ($3.76 vs $6 per 1M).

2
Task areas won
20
37
Avg percentile
74
0
Top-3 finishes
0
$6.0
Price / 1M tokens
$3.76
Anthropic
Provider
Z.ai

GLM 5.2 costs 1.6× less per token ($3.76 vs $6 per 1M).

Task by task

Task area Claude Haiku 4.5 GLM 5.2 Winner
RAG, Safety & Grounding #97 / 113
Strong
#6 / 113
Excellent
GLM 5.2
Structured Output #109 / 113
Usable
#25 / 113
Excellent
GLM 5.2
Customer Support #99 / 113
Usable
#16 / 113
Strong
GLM 5.2
Coding #94 / 115
Usable
#23 / 115
Strong
GLM 5.2
Content & Brand #89 / 124
Usable
#19 / 124
Strong
GLM 5.2
Presentations & Decks #88 / 110
Strong
#25 / 110
Excellent
GLM 5.2
AI Strategy #91 / 126
Strong
#34 / 126
Strong
GLM 5.2
Chef / Home Cooking #113 / 126
Needs editing
#59 / 126
Usable
GLM 5.2
Knowledge & Docs #71 / 110
Usable
#21 / 110
Strong
GLM 5.2
Sales #80 / 110
Usable
#39 / 110
Usable
GLM 5.2
Investor & Pitch #63 / 66
Needs editing
#24 / 66
Strong
GLM 5.2
Creative & Comedy #84 / 110 #46 / 110 GLM 5.2
Landing Pages #61 / 72
Usable
#26 / 72
Strong
GLM 5.2
Executive Assistant #73 / 112
Strong
#43 / 112
Strong
GLM 5.2
Product & Project Management #38 / 110
Strong
#11 / 110
Excellent
GLM 5.2
Summarization & Meeting Notes #27 / 110
Excellent
#9 / 110
Excellent
GLM 5.2
Data & Analytics #53 / 110
Excellent
#41 / 110
Excellent
GLM 5.2
Legal & HR #48 / 110
Excellent
#36 / 110
Excellent
GLM 5.2
Frontend & Landing Pages #7 / 109
Usable
#18 / 109
Needs editing
Claude Haiku 4.5
Research & Competitive Analysis #59 / 110
Usable
#50 / 110
Usable
GLM 5.2
Training & Education #36 / 110
Excellent
#29 / 110
Excellent
GLM 5.2
Translation & Localization #27 / 110
Excellent
#28 / 110
Excellent
Claude Haiku 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 Haiku 4.5 better than GLM 5.2?

Across 22 task areas we benchmarked, GLM 5.2 ranks higher in 20 and Claude Haiku 4.5 in 2.

Which is cheaper, Claude Haiku 4.5 or GLM 5.2?

GLM 5.2 costs 1.6× less per token ($3.76 vs $6 per 1M).

What is Claude Haiku 4.5 better at?

Claude Haiku 4.5 out-ranks GLM 5.2 at Frontend & Landing Pages, Translation & Localization.

What is GLM 5.2 better at?

GLM 5.2 out-ranks Claude Haiku 4.5 at RAG, Safety & Grounding, Structured Output, Customer Support.

Full Claude Haiku 4.5 review → Full GLM 5.2 review → Full model leaderboard →

More comparisons

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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.

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  • Optimise the winner until the scores say it's ready to ship.
Experiment · Cold outreach email

Prompt × model results

12 test cases · 3 evals
Claude Opus
GPT-5
Gemini
v1
7.1
6.8
7.4
v2
8.3
7.9
8.0
v3
9.2
8.6
8.4
Best combo: v3 × Claude Opus
9.2 quality · $0.004/run · 1.8s