OpenAI: GPT-5.6 Luna vs Z.ai: GLM 5

The average score is effectively tied at 7.7 vs 7.7. GLM 5 (medium) has the lower benchmark cost at $0.372 vs $1.017. GPT-5.6 Luna (high) is faster at 18.68s vs 33.54s, with pass rates of 72.7% vs 78.8%.

Recommended modelGLM 5 (medium)It has the best score here (7.7), while costing about 2.7x 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 GLM 5 medium Release: 2026-02-12

Metric	GPT-5.6 Luna GPT-5.6 Luna high Release: 2026-07-09	GLM 5 GLM 5 medium Release: 2026-02-12
Score	7.7	7.7
Rank	#42	#40
Reliability	10.0	10.0
Consistency	8.9	8.1
Tests Correct
Attempt pass rate	72.7%	78.8%
Flaky tests	3	4
Total Runs	66	63
Cost per result	6.780	1.668
Total Cost	$1.017	$0.372
Input Price	$1.000 / 1M	$0.950 / 1M
Output Price	$6.000 / 1M	$3.150 / 1M
Total Input Tokens	80,918	35,224
Output Tokens	5,088	21,570
Reasoning Tokens	150,910	102,996
Response Time (avg)	18.68s	33.54s
Response Time (max)	111.09s	99.85s
Response Time (total)	411.05s	435.99s

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

#40 GLM 5

medium

Cost: $0.005
Time: 20.7s
Tokens: 2,068 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	10.0	10.0	100.0%	0		23.66s	555	480	7,056

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	10.0	10.0	100.0%	0		74.30s	7,254	2,997	52,930

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	5.0	5.0	50.0%	0		28.96s	12,804	662	3,242

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	7.1	5.6	83.3%	1		8.90s	5,508	567	3,734

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	3.5	4.4	33.3%	2		0ms	260	13,176	14,137

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	6.1	3.1	66.7%	1		14.69s	477	2,020	2,248

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	10.0	10.0	100.0%	0		7.25s	636	1,001	2,129

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	10.0	10.0	100.0%	0		11.33s	609	33	4,076

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	10.0	10.0	100.0%	0		15.93s	6,935	233	994

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	3.0	10.0	0.0%	0		67.37s	186	401	12,450

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