OpenAI: GPT-5.6 Luna vs Z.ai: GLM 5.2

GLM 5.2 (medium) leads on average score with 7.8 vs 7.7. GLM 5.2 (medium) has the lower benchmark cost at $0.213 vs $1.017. GPT-5.6 Luna (high) is faster at 18.68s vs 23.28s, with pass rates of 72.7% vs 80.3%.

Recommended modelGLM 5.2 (medium)It has the best score here (7.8), while costing about 4.8x less than GPT-5.6 Luna (high).

Last updated at: 2026-07-17

Metric	GPT-5.6 Luna GPT-5.6 Luna high Release: 2026-07-09	GLM 5.2 GLM 5.2 medium Release: 2026-06-17

Metric	GPT-5.6 Luna GPT-5.6 Luna high Release: 2026-07-09	GLM 5.2 GLM 5.2 medium Release: 2026-06-17
Score	7.7	7.8
Rank	#42	#36
Reliability	10.0	9.5
Consistency	8.9	8.0
Tests Correct
Attempt pass rate	72.7%	80.3%
Flaky tests	3	4
Total Runs	66	63
Cost per result	6.780	2.159
Total Cost	$1.017	$0.213
Input Price	$1.000 / 1M	$0.919 / 1M
Output Price	$6.000 / 1M	$2.887 / 1M
Total Input Tokens	80,918	37,199
Output Tokens	5,088	12,261
Reasoning Tokens	150,910	49,500
Response Time (avg)	18.68s	23.28s
Response Time (max)	111.09s	101.36s
Response Time (total)	411.05s	488.94s

Hamster playing table tennis

Prompt: Create a detailed SVG illustration of a hamster playing table tennis.

#42 GPT-5.6 Luna

high

Cost: $0.033
Time: 34.2s
Tokens: 5,484 tok

#36 GLM 5.2

medium

Cost: $0.041
Time: 195.8s
Tokens: 9,287 tok

Top Models by Score

Score vs Total Cost

Response Time (avg)

Score vs Response Time (avg)

Total Output Tokens

Score vs Total Output Tokens

Category Breakdown

Category:

Anti-AI Tricks	Score	Consistency	Attempt pass rate	Flaky tests	Tests Correct	Response Time (avg)	Input Tokens	Output Tokens	Reasoning Tokens
GPT-5.6 Luna	8.3	10.0	75.0%	0		2.99s	606	162	1,265
GLM 5.2	10.0	10.0	100.0%	0		5.89s	639	497	2,634

Coding	Score	Consistency	Attempt pass rate	Flaky tests	Tests Correct	Response Time (avg)	Input Tokens	Output Tokens	Reasoning Tokens
GPT-5.6 Luna	5.5	4.7	55.6%	2		15.63s	7,302	510	17,746
GLM 5.2	8.2	7.2	88.9%	1		40.96s	7,317	1,475	17,123

Combined	Score	Consistency	Attempt pass rate	Flaky tests	Tests Correct	Response Time (avg)	Input Tokens	Output Tokens	Reasoning Tokens
GPT-5.6 Luna	10.0	10.0	100.0%	0		19.05s	57,719	3,366	8,005
GLM 5.2	5.0	5.0	50.0%	0		51.96s	12,696	458	4,531

Data parsing and extraction	Score	Consistency	Attempt pass rate	Flaky tests	Tests Correct	Response Time (avg)	Input Tokens	Output Tokens	Reasoning Tokens
GPT-5.6 Luna	10.0	10.0	100.0%	0		2.18s	7,140	234	470
GLM 5.2	10.0	10.0	100.0%	0		13.44s	7,149	348	2,345

Domain specific	Score	Consistency	Attempt pass rate	Flaky tests	Tests Correct	Response Time (avg)	Input Tokens	Output Tokens	Reasoning Tokens
GPT-5.6 Luna	7.7	10.0	66.7%	0		78.96s	723	69	96,395
GLM 5.2	4.1	4.4	44.5%	2		45.47s	551	8,188	11,606

General Intelligence	Score	Consistency	Attempt pass rate	Flaky tests	Tests Correct	Response Time (avg)	Input Tokens	Output Tokens	Reasoning Tokens
GPT-5.6 Luna	5.0	10.0	0.0%	0		3.65s	477	117	563
GLM 5.2	10.0	10.0	100.0%	0		17.39s	498	54	1,842

Instructions following	Score	Consistency	Attempt pass rate	Flaky tests	Tests Correct	Response Time (avg)	Input Tokens	Output Tokens	Reasoning Tokens
GPT-5.6 Luna	9.9	10.0	100.0%	0		1.79s	660	97	481
GLM 5.2	9.9	10.0	100.0%	0		7.90s	678	94	1,518

Puzzle Solving	Score	Consistency	Attempt pass rate	Flaky tests	Tests Correct	Response Time (avg)	Input Tokens	Output Tokens	Reasoning Tokens
GPT-5.6 Luna	7.6	7.2	77.8%	1		14.55s	642	242	18,281
GLM 5.2	8.2	7.2	88.9%	1		13.13s	672	536	4,822

Tool Calling	Score	Consistency	Attempt pass rate	Flaky tests	Tests Correct	Response Time (avg)	Input Tokens	Output Tokens	Reasoning Tokens
GPT-5.6 Luna	10.0	10.0	100.0%	0		4.98s	5,454	260	324
GLM 5.2	10.0	10.0	100.0%	0		20.41s	6,861	230	550

Trivia	Score	Consistency	Attempt pass rate	Flaky tests	Tests Correct	Response Time (avg)	Input Tokens	Output Tokens	Reasoning Tokens
GPT-5.6 Luna	3.0	10.0	0.0%	0		17.00s	195	31	7,380
GLM 5.2	3.0	10.0	0.0%	0		34.25s	138	381	2,529

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