GLM 5 vs GPT-5 Mini

GLM 5 leads GPT-5 Mini on coding, 41.7 to 34.2 on the Vibe Coding Index, and GPT-5 Mini costs 1.6x less per output token ($2.00 vs $3.20 per million). Updated October 22, 2026; 65 benchmarks have a result for both.

Replace GLM 5 Replace GPT-5 Mini

GLM 5Z.ai

Coding: 41.7
Overall: 54.3
Output $/M: $3.20

GPT-5 MiniOpenAI

Coding: 34.2
Overall: 43.7
Output $/M: $2.00

vs boards won of 65 shared

GLM 5 or GPT-5 Mini: which to pick

Pick GLM 5 for coding: it scores 41.7 on the Vibe Coding Index against 34.2 for GPT-5 Mini.

Pick GPT-5 Mini for output tokens 1.6x cheaper ($2.00 vs $3.20 per million) and a lower cost per solved task ($0.08 against $0.63).

Model AGLM 5Z.ai41.7/1003 independent benchmarks$0.63 per solved task Model BGPT-5 MiniOpenAI34.2/1002 independent benchmarks$0.08 per solved task

651136

Shared results: 65
GLM 5 only: 11
GPT-5 Mini only: 36
Like-for-like categories: 8 of 9

Only benchmarks that tested both models count toward a pick; a result only one model has is shown but not compared.

Which one for your work

Each card is decided by one number both models carry. Where only one has it, the card says so and makes no call.

Coding
Vibe Coding Index, six public coding benchmarks
GLM 5
GLM 5 scores 41.7 against 34.2.
3 and 2 benchmarks behind the scores
Intelligence
AA Intelligence Index
GLM 5
GLM 5 leads, 27.9 against 20.6.
Same board, both measured
Reasoning
GPQA Diamond
GLM 5
GLM 5 leads, 83.3% against 80.3%.
Same board, both measured
Math
AIME
GLM 5
GLM 5 leads, 91.7% against 91.5%.
Same board, both measured
Knowledge
MMLU Pro
GLM 5
GLM 5 leads, 86.0% against 82.2%.
Same board, both measured
Web design
Design Arena: websites
GLM 5
GLM 5 leads, 1247 against 1125.
Same board, both measured
Long documents
Listed context window
GPT-5 Mini
GPT-5 Mini takes 400K tokens against 205K.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
GPT-5 Mini
GLM 5 $0.0026, GPT-5 Mini $0.0013 per turn.
List prices
Cost per solved task
One SWE-bench Verified task, solved
GPT-5 Mini
GLM 5 $0.63, GPT-5 Mini $0.08.
Published attempt cost and pass rate

At a glance

Coding index: GLM 5 41.7 from 3 benchmarks, GPT-5 Mini 34.2 from 2 benchmarks.
Widest category: Agentic work, 27.4 points apart on average over 2 shared benchmarks.
Widest single gap: SWE-bench Multilingual: GLM 5 69.7% against GPT-5 Mini 39.7%, 30.0 points apart on a 0 to 100 scale.
Output price: GLM 5 $3.20 against GPT-5 Mini $2.00 per million output tokens, 1.6x apart.
Context window: GLM 5 takes 205K tokens, GPT-5 Mini 400K.

Benchmark by benchmark

First the score: boards each model leads, per category, where both have a result. Then every board, a category to a fold; bars are each result on a 0 to 100 scale, so compare the two in a row, not one row with another.

Boards won, where both have a result
Category	GLM 5	GPT-5 Mini
Coding	8	2
Intelligence	2	0
Agentic work	2	0
Reasoning	8	2
Math	3	1
Knowledge	7	3
Web design	8	0
General	18	1
All shared boards	56	9

CodingLike-for-likeSix of these boards feed the Vibe Coding Index82

Coding benchmarks for GLM 5 and GPT-5 Mini
Benchmark	GLM 5	GPT-5 Mini	Leader
SWE-bench Verified	72.8%	59.8%	GLM 5
SWE-bench Multilingual	69.7%	39.7%	GLM 5
LMArena WebDev	1435	Not measured	Only GLM 5 measured
LiveCodeBench (Vals AI)	81.9%	86.6%	GPT-5 Mini
SWE-bench Verified (Vals AI)	71.4%	60.8%	GLM 5
Vibe Code Bench (Vals AI)	23.4%	14.2%	GLM 5
LiveCodeBench (Artificial Analysis run)	Not measured	83.8%	Only GPT-5 Mini measured
SciCode	Not measured	39.0%	Only GPT-5 Mini measured
Terminal-Bench Hard (Artificial Analysis run)	43.2%	33.3%	GLM 5
Terminal-Bench	52.4%	34.8%	GLM 5
WeirdML	48.2%	52.7%	GPT-5 Mini
ALE-Bench	765.6	Not measured	Only GLM 5 measured
LMArena Text: coding	1461	1406	GLM 5
LMArena Text: software and IT	1460	1394	GLM 5
LMArena WebDev: React	1424	Not measured	Only GLM 5 measured
LMArena WebDev: HTML	1450	Not measured	Only GLM 5 measured
Neither model has a result on the other 23 boards here

IntelligenceLike-for-likePublic boards, shown as published, kept out of the index20

Intelligence benchmarks for GLM 5 and GPT-5 Mini
Benchmark	GLM 5	GPT-5 Mini	Leader
AA Intelligence Index	27.9	20.6	GLM 5
Epoch Capabilities Index	145.8	145.3	GLM 5

Agentic workLike-for-likePublic boards, shown as published, kept out of the index20

Agentic work benchmarks for GLM 5 and GPT-5 Mini
Benchmark	GLM 5	GPT-5 Mini	Leader
Design Arena: agents building full-stack apps	1123	Not measured	Only GLM 5 measured
Design Arena: agents building mobile apps	1136	Not measured	Only GLM 5 measured
Design Arena: agents building Android apps	1147	Not measured	Only GLM 5 measured
Design Arena: agents building Godot games	1144	Not measured	Only GLM 5 measured
Design Arena: HTML slides	1098	Not measured	Only GLM 5 measured
τ²-Bench Telecom	98.2%	71.1%	GLM 5
Vending-Bench 2	$4,432	-$31	GLM 5
Berkeley Function Calling Leaderboard (BFCL)	Not measured	55.5%	Only GPT-5 Mini measured
Neither model has a result on the other 33 boards here

ReasoningLike-for-likePublic boards, shown as published, kept out of the index82

Reasoning benchmarks for GLM 5 and GPT-5 Mini
Benchmark	GLM 5	GPT-5 Mini	Leader
GPQA Diamond	83.3%	80.3%	GLM 5
MMMU Pro (Vals AI)	Not measured	78.9%	Only GPT-5 Mini measured
GPQA Diamond (Artificial Analysis run)	82.0%	82.8%	GPT-5 Mini
Humanity's Last Exam (Artificial Analysis run)	29.3%	21.5%	GLM 5
GPQA Diamond (Epoch AI run)	87.8%	75.0%	GLM 5
ARC-AGI	44.7%	54.3%	GPT-5 Mini
ARC-AGI-2	4.9%	4.4%	GLM 5
SimpleBench	53.2%	Not measured	Only GLM 5 measured
Chess puzzles	Not measured	24.0%	Only GPT-5 Mini measured
Mystery game puzzles	Not measured	10.0%	Only GPT-5 Mini measured
VPCT	Not measured	40.2%	Only GPT-5 Mini measured
LMArena Text: hard prompts	1452	1380	GLM 5
LMArena Text: expert	1454	1379	GLM 5
LMArena Text: hard prompts in English	1460	1383	GLM 5
LMArena Vision: diagrams	Not measured	1202	Only GPT-5 Mini measured
LMArena Vision: homework	Not measured	1210	Only GPT-5 Mini measured
Kagi LLM Benchmark	75.0%	70.3%	GLM 5
Neither model has a result on the other 5 boards here

MathLike-for-likePublic boards, shown as published, kept out of the index31

Math benchmarks for GLM 5 and GPT-5 Mini
Benchmark	GLM 5	GPT-5 Mini	Leader
AIME	91.7%	91.5%	GLM 5
MATH 500 (Vals AI)	Not measured	94.8%	Only GPT-5 Mini measured
MGSM (Vals AI)	Not measured	92.6%	Only GPT-5 Mini measured
AA Math Index	Not measured	90.7	Only GPT-5 Mini measured
AIME 2025 (Artificial Analysis run)	Not measured	90.7%	Only GPT-5 Mini measured
OTIS Mock AIME	80.0%	86.7%	GPT-5 Mini
FrontierMath, tiers 1 to 3	Not measured	46.7%	Only GPT-5 Mini measured
FrontierMath, tier 4	Not measured	12.2%	Only GPT-5 Mini measured
ProofBench	Not measured	9.0%	Only GPT-5 Mini measured
MATH level 5	Not measured	97.8%	Only GPT-5 Mini measured
LMArena Text: math	1440	1378	GLM 5
LMArena Text: mathematical work	1451	1380	GLM 5
Neither model has a result on the other 1 board here

KnowledgeLike-for-likePublic boards, shown as published, kept out of the index73

Knowledge benchmarks for GLM 5 and GPT-5 Mini
Benchmark	GLM 5	GPT-5 Mini	Leader
MMLU Pro	86.0%	82.2%	GLM 5
LegalBench (Vals AI)	84.1%	81.8%	GLM 5
CaseLaw (Vals AI)	52.5%	68.5%	GPT-5 Mini
CorpFin (Vals AI)	62.9%	60.2%	GLM 5
TaxEval (Vals AI)	70.0%	75.2%	GPT-5 Mini
MortgageTax (Vals AI)	Not measured	66.9%	Only GPT-5 Mini measured
MedQA (Vals AI)	94.3%	96.1%	GPT-5 Mini
MedCode (Vals AI)	Not measured	43.0%	Only GPT-5 Mini measured
MMLU Pro (Artificial Analysis run)	Not measured	83.7%	Only GPT-5 Mini measured
SimpleQA Verified	Not measured	21.6%	Only GPT-5 Mini measured
LMArena Text: science	1460	1371	GLM 5
LMArena Text: medicine and healthcare	1455	1380	GLM 5
LMArena Text: legal and government	1453	1375	GLM 5
LMArena Text: business and finance	1430	1358	GLM 5
FACTS Benchmark Suite	Not measured	38.6%	Only GPT-5 Mini measured
Neither model has a result on the other 3 boards here

Web designLike-for-likePublic boards, shown as published, kept out of the index80

Web design benchmarks for GLM 5 and GPT-5 Mini
Benchmark	GLM 5	GPT-5 Mini	Leader
Design Arena: websites	1247	1125	GLM 5
Design Arena: UI components	1227	1103	GLM 5
Design Arena: game dev	1234	1129	GLM 5
Design Arena: data viz	1228	1131	GLM 5
Design Arena: 3D	1228	1036	GLM 5
Design Arena: all code categories	1246	1114	GLM 5
Design Arena: SVG	1168	1091	GLM 5
Design Arena: ASCII art	1147	1125	GLM 5
Neither model has a result on the other 1 board here

GeneralLike-for-likePublic boards, shown as published, kept out of the index181

General benchmarks for GLM 5 and GPT-5 Mini
Benchmark	GLM 5	GPT-5 Mini	Leader
SAGE (Vals AI)	Not measured	43.0%	Only GPT-5 Mini measured
MedScribe (Vals AI)	Not measured	80.6%	Only GPT-5 Mini measured
IFBench	72.3%	75.4%	GPT-5 Mini
Long context reasoning (AA-LCR)	75.7%	72.3%	GLM 5
DTBench	Not measured	80.5%	Only GPT-5 Mini measured
LMCA	Not measured	34.2%	Only GPT-5 Mini measured
Fiction.LiveBench	Not measured	69.4%	Only GPT-5 Mini measured
Creative writing (Lech Mazur)	Not measured	83.1%	Only GPT-5 Mini measured
CL-bench	18.7%	Not measured	Only GLM 5 measured
LMArena Text	1446	1373	GLM 5
LMArena Text: instruction following	1428	1357	GLM 5
LMArena Text: creative writing	1438	1325	GLM 5
LMArena Vision	Not measured	1202	Only GPT-5 Mini measured
LMArena Text: English	1458	1379	GLM 5
LMArena Text: non-English	1430	1363	GLM 5
LMArena Text: Chinese	1511	1386	GLM 5
LMArena Text: German	1447	1366	GLM 5
LMArena Text: Japanese	1416	1341	GLM 5
LMArena Text: Korean	1423	1308	GLM 5
LMArena Text: French	1456	1386	GLM 5
LMArena Text: Spanish	1454	1354	GLM 5
LMArena Text: Russian	1436	1362	GLM 5
LMArena Text: Polish	1434	1378	GLM 5
LMArena Text: multi-turn	1456	1363	GLM 5
LMArena Text: longer queries	1446	1355	GLM 5
LMArena Text: writing and language	1437	1344	GLM 5
LMArena Text: entertainment and media	1426	1340	GLM 5
LMArena Vision: English	Not measured	1216	Only GPT-5 Mini measured
LMArena Vision: Chinese	Not measured	1214	Only GPT-5 Mini measured
LMArena Vision: reading text	Not measured	1199	Only GPT-5 Mini measured
LMArena Vision: humor	Not measured	1205	Only GPT-5 Mini measured
LMArena Vision: captioning	Not measured	1217	Only GPT-5 Mini measured
LMArena Vision: recognizing things	Not measured	1226	Only GPT-5 Mini measured
LMArena Vision: creative writing	Not measured	1181	Only GPT-5 Mini measured
Neither model has a result on the other 12 boards here

Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared

Image generation benchmarks for GLM 5 and GPT-5 Mini
Benchmark	GLM 5	GPT-5 Mini	Leader
Neither model has a result on 5 boards here

What each workload costs

Three fixed token mixes at each model's listed price, so per-token rates become a bill.

Chat turn

1K input + 500 output tokens

GLM 5$0.0026Fits in one request

GPT-5 Mini$0.0013Fits in one request

GPT-5 Mini costs less

Repository review

50K input + 3K output tokens

GLM 5$0.060Fits in one request

GPT-5 Mini$0.018Fits in one request

GPT-5 Mini costs less

Agent loop

200K input + 10K output tokens

GLM 5$0.232Exceeds the context window

GPT-5 Mini$0.070Fits in one request

GPT-5 Mini costs less

Listed OpenRouter rates, without cache or batch discounts. A workload that does not fit a model's context window would need splitting.

Specification differences

The leading value in a row is marked; a row with a missing value names no leader. Our two rows are marked in red.

Specifications of GLM 5 and GPT-5 Mini
Specification	Z.ai GLM 5	OpenAI GPT-5 Mini
Maker	Z.ai	OpenAI
Weights	Open weights	No public weights listed
Released	February 11, 2026	August 7, 2025
Context window	205K	400K
Input $/Mtok	$1.00	$0.25
Output $/Mtok	$3.20	$2.00
Coding index	41.7	34.2
Independent measurements behind it	3	2
Cost per solved task	$0.63	$0.08
Source	OpenRouter listing	OpenRouter listing

Questions

Is GLM 5 better than GPT-5 Mini for coding?

Pick GLM 5 for coding: it scores 41.7 on the Vibe Coding Index against 34.2 for GPT-5 Mini. Pick GPT-5 Mini for output tokens 1.6x cheaper ($2.00 vs $3.20 per million) and a lower cost per solved task ($0.08 against $0.63).

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

GLM 5 costs $1.00 per million input tokens and $3.20 per million output tokens; GPT-5 Mini costs $0.25 and $2.00. Per solved SWE-bench Verified task, GLM 5 costs $0.63 and GPT-5 Mini $0.08.

Which has the bigger context window, GLM 5 or GPT-5 Mini?

GPT-5 Mini, with 400K tokens against 205K.

How many benchmarks is the GLM 5 vs GPT-5 Mini comparison based on?

65 benchmarks have a result for both models as of October 22, 2026. GLM 5's coding index rests on 3 independent benchmarks and GPT-5 Mini's on 2. Where only one model has a result, the page says so instead of naming a winner.

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GLM 5 or GPT-5 Mini: which to pick

Which one for your work

Coding

Intelligence

Reasoning

Math

Knowledge

Web design

Long documents

Everyday cost

Cost per solved task

At a glance

Benchmark by benchmark

What each workload costs

Chat turn

Repository review

Agent loop

Specification differences

Questions

Compare next