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

Last updated at: 2026-05-29

Metric GPT-5 Nano GPT-5 Nano medium Release: 2025-08-07 GLM 5 GLM 5 none Release: 2026-02-12
Score 6.1 6.3
Rank #101 #96
Reliability 10.0 10.0
Consistency 7.1 9.7
Tests Correct
Attempt pass rate 55.0% 46.7%
Flaky tests 7 1
Total Runs 60 60
Cost per result 0.952 0.246
Total Cost $0.077 $0.023
Input Price $0.050 / 1M $0.600 / 1M
Output Price $0.400 / 1M $1.920 / 1M
Output Tokens 5,328 1,985
Reasoning Tokens 181,056 0
Response Time (avg) 43.52s 3.95s
Response Time (max) 204.02s 11.07s
Response Time (total) 565.82s 51.38s

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

Anti-AI Tricks Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5 Nano 6.5 7.9 58.3% 1 25.50s 1,221 21,184
GLM 5 4.8 10.0 25.0% 0 2.37s 275 0
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5 Nano 5.4 6.6 33.3% 1 47.80s 604 30,144
GLM 5 4.6 6.8 16.7% 1 5.18s 424 0
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5 Nano 10.0 10.0 100.0% 0 65.96s 578 17,984
GLM 5 3.0 10.0 0.0% 0 4.98s 406 0
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5 Nano 3.7 1.7 50.0% 2 21.42s 453 10,560
GLM 5 10.0 10.0 100.0% 0 5.78s 203 0
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5 Nano 5.2 4.4 55.6% 2 204.02s 237 64,448
GLM 5 3.0 10.0 0.0% 0 2.24s 19 0
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5 Nano 4.1 10.0 0.0% 0 17.51s 202 4,608
GLM 5 10.0 10.0 100.0% 0 3.27s 103 0
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5 Nano 9.8 10.0 100.0% 0 15.64s 312 4,736
GLM 5 10.0 10.0 100.0% 0 1.48s 61 0
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5 Nano 5.3 7.2 44.4% 1 20.63s 929 14,272
GLM 5 7.7 10.0 66.7% 0 1.91s 261 0
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5 Nano 10.0 10.0 100.0% 0 33.30s 558 6,976
GLM 5 10.0 10.0 100.0% 0 11.07s 220 0
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5 Nano 3.0 10.0 0.0% 0 20.13s 234 6,144
GLM 5 3.0 10.0 0.0% 0 3.62s 13 0

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