Confirm Action

Are you sure you want to proceed?

Z.ai GLM 5 VS OpenAI GPT-5 Mini

GLM 5 vs GPT-5 Mini: 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 and GPT-5 Mini split the 22 task areas we tested 11–11. GPT-5 Mini costs 1.1× less per token ($2.25 vs $2.52 per 1M).

11
Task areas won
11
49
Avg percentile
50
0
Top-3 finishes
1
$2.52
Price / 1M tokens
$2.25
Z.ai
Provider
OpenAI

GPT-5 Mini costs 1.1× less per token ($2.25 vs $2.52 per 1M).

Task by task

Task area GLM 5 GPT-5 Mini Winner
Structured Output #94 / 113
Strong
#17 / 113
Excellent
GPT-5 Mini
Customer Support #35 / 113
Strong
#104 / 113
Usable
GLM 5
Frontend & Landing Pages #76 / 109
Weak
#12 / 109
Needs editing
GPT-5 Mini
Product & Project Management #58 / 110
Strong
#1 / 110
Excellent
GPT-5 Mini
Executive Assistant #62 / 112
Strong
#108 / 112
Usable
GLM 5
AI Strategy #66 / 126
Strong
#100 / 126
Usable
GLM 5
Sales #68 / 110
Usable
#102 / 110
Needs editing
GLM 5
Summarization & Meeting Notes #48 / 110
Excellent
#81 / 110
Excellent
GLM 5
RAG, Safety & Grounding #47 / 113
Excellent
#78 / 113
Excellent
GLM 5
Legal & HR #37 / 110
Excellent
#10 / 110
Excellent
GPT-5 Mini
Research & Competitive Analysis #48 / 110
Strong
#21 / 110
Excellent
GPT-5 Mini
Translation & Localization #26 / 110
Excellent
#52 / 110
Excellent
GLM 5
Landing Pages #69 / 72
Needs editing
#50 / 72
Usable
GPT-5 Mini
Knowledge & Docs #24 / 110
Strong
#41 / 110
Strong
GLM 5
Data & Analytics #43 / 110
Excellent
#27 / 110
Excellent
GPT-5 Mini
Training & Education #67 / 110
Strong
#81 / 110
Strong
GLM 5
Chef / Home Cooking #57 / 126
Usable
#45 / 126
Usable
GPT-5 Mini
Investor & Pitch #62 / 66
Usable
#50 / 66
Usable
GPT-5 Mini
Presentations & Decks #49 / 110
Excellent
#39 / 110
Excellent
GPT-5 Mini
Content & Brand #60 / 124
Strong
#69 / 124
Strong
GLM 5
Creative & Comedy #72 / 110 #70 / 110 GPT-5 Mini
Coding #36 / 115
Strong
#37 / 115
Strong
GLM 5

Rank = position among every model config we tested in that task area (lower is better). Sorted by biggest gap first.

Frequently asked

Is GLM 5 better than GPT-5 Mini?

They tie across the 22 task areas we benchmarked, at 11 apiece.

Which is cheaper, GLM 5 or GPT-5 Mini?

GPT-5 Mini costs 1.1× less per token ($2.25 vs $2.52 per 1M).

What is GLM 5 better at?

GLM 5 out-ranks GPT-5 Mini at Customer Support, Executive Assistant, AI Strategy.

What is GPT-5 Mini better at?

GPT-5 Mini out-ranks GLM 5 at Structured Output, Frontend & Landing Pages, Product & Project Management.

Full GLM 5 review → Full GPT-5 Mini review → Full model leaderboard →

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.
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