Gemini 3.5 Flash 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 12 of 22 task areas we tested; Gemini 3.5 Flash takes 10. GLM 5.2 costs 2.8× less per token ($3.76 vs $10.5 per 1M).
GLM 5.2 costs 2.8× less per token ($3.76 vs $10.5 per 1M).
Task by task
| Task area | Gemini 3.5 Flash | GLM 5.2 | Winner |
|---|---|---|---|
| Legal & HR |
#73
/ 110
Strong
|
#36
/ 110
Excellent
|
GLM 5.2 |
| Chef / Home Cooking |
#24
/ 126
Usable
|
#59
/ 126
Usable
|
Gemini 3.5 Flash |
| Investor & Pitch |
#56
/ 66
Usable
|
#24
/ 66
Strong
|
GLM 5.2 |
| Content & Brand |
#46
/ 124
Strong
|
#19
/ 124
Strong
|
GLM 5.2 |
| Executive Assistant |
#19
/ 112
Strong
|
#43
/ 112
Strong
|
Gemini 3.5 Flash |
| Knowledge & Docs |
#44
/ 110
Strong
|
#21
/ 110
Strong
|
GLM 5.2 |
| Product & Project Management |
#33
/ 110
Strong
|
#11
/ 110
Excellent
|
GLM 5.2 |
| Training & Education |
#7
/ 110
Excellent
|
#29
/ 110
Excellent
|
Gemini 3.5 Flash |
| Creative & Comedy | #27 / 110 | #46 / 110 | Gemini 3.5 Flash |
| Research & Competitive Analysis |
#65
/ 110
Usable
|
#50
/ 110
Usable
|
GLM 5.2 |
| Frontend & Landing Pages |
#4
/ 109
Usable
|
#18
/ 109
Needs editing
|
Gemini 3.5 Flash |
| Landing Pages |
#40
/ 72
Strong
|
#26
/ 72
Strong
|
GLM 5.2 |
| AI Strategy |
#23
/ 126
Strong
|
#34
/ 126
Strong
|
Gemini 3.5 Flash |
| Structured Output |
#35
/ 113
Excellent
|
#25
/ 113
Excellent
|
GLM 5.2 |
| RAG, Safety & Grounding |
#15
/ 113
Excellent
|
#6
/ 113
Excellent
|
GLM 5.2 |
| Presentations & Decks |
#17
/ 110
Excellent
|
#25
/ 110
Excellent
|
Gemini 3.5 Flash |
| Summarization & Meeting Notes |
#17
/ 110
Excellent
|
#9
/ 110
Excellent
|
GLM 5.2 |
| Data & Analytics |
#34
/ 110
Excellent
|
#41
/ 110
Excellent
|
Gemini 3.5 Flash |
| Sales |
#33
/ 110
Strong
|
#39
/ 110
Usable
|
Gemini 3.5 Flash |
| Coding |
#28
/ 115
Strong
|
#23
/ 115
Strong
|
GLM 5.2 |
| Customer Support |
#12
/ 113
Strong
|
#16
/ 113
Strong
|
Gemini 3.5 Flash |
| Translation & Localization |
#30
/ 110
Excellent
|
#28
/ 110
Excellent
|
GLM 5.2 |
Rank = position among every model config we tested in that task area (lower is better). Sorted by biggest gap first.
Frequently asked
Is Gemini 3.5 Flash better than GLM 5.2?
Across 22 task areas we benchmarked, GLM 5.2 ranks higher in 12 and Gemini 3.5 Flash in 10.
Which is cheaper, Gemini 3.5 Flash or GLM 5.2?
GLM 5.2 costs 2.8× less per token ($3.76 vs $10.5 per 1M).
What is Gemini 3.5 Flash better at?
Gemini 3.5 Flash out-ranks GLM 5.2 at Chef / Home Cooking, Executive Assistant, Training & Education.
What is GLM 5.2 better at?
GLM 5.2 out-ranks Gemini 3.5 Flash at Legal & HR, Investor & Pitch, Content & Brand.
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