OpenAI: GPT-5.5 vs Z.ai: GLM 5

GPT-5.5 (low) leads on average score with 9.3 vs 7.7. GLM 5 (medium) has the lower benchmark cost at $0.307 vs $1.253. GPT-5.5 (low) is faster at 10.13s vs 33.54s, with pass rates of 86.4% vs 78.8%.

Recommended modelGPT-5.5 (low)It has the best score here (9.3), while responding about 3.3x faster than GLM 5 (medium).

Last updated at: 2026-07-25

Metric	GPT-5.5 GPT-5.5 low Release: 2026-04-24	GLM 5 GLM 5 medium Release: 2026-02-12

Metric	GPT-5.5 GPT-5.5 low Release: 2026-04-24	GLM 5 GLM 5 medium Release: 2026-02-12
Score	9.3	7.7
Rank	#9	#49
Reliability	10.0	10.0
Consistency	10.0	8.1
Tests Correct
Attempt pass rate	86.4%	78.8%
Flaky tests	0	4
Total Runs	66	63
Cost per result	6.594	1.668
Total Cost	$1.253	$0.307
Input Price	$5.000 / 1M	$0.950 / 1M
Output Price	$30.000 / 1M	$2.551 / 1M
Total Input Tokens	80,058	35,224
Output Tokens	5,378	21,570
Reasoning Tokens	23,040	102,996
Response Time (avg)	10.13s	33.54s
Response Time (max)	56.19s	99.85s
Response Time (total)	222.82s	435.99s

Hamster playing table tennis

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

#9 GPT-5.5

low

Cost: $0.068
Time: 37.0s
Tokens: 2,339 tok

#49 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-5.5	10.0	10.0	100.0%	0		4.41s	606	238	1,020
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-5.5	10.0	10.0	100.0%	0		15.04s	7,302	423	6,402
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-5.5	10.0	10.0	100.0%	0		13.73s	56,868	3,635	1,297
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-5.5	10.0	10.0	100.0%	0		3.28s	7,140	228	157
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-5.5	5.3	10.0	33.3%	0		28.05s	723	69	11,609
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-5.5	10.0	10.0	100.0%	0		5.17s	477	133	245
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-5.5	9.9	10.0	100.0%	0		3.74s	660	93	415
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-5.5	10.0	10.0	100.0%	0		4.74s	642	279	954
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-5.5	10.0	10.0	100.0%	0		4.96s	5,445	250	101
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-5.5	3.0	10.0	0.0%	0		10.06s	195	30	840
GLM 5	3.0	10.0	0.0%	0		67.37s	186	401	12,450

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