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

Last updated at: 2026-04-14

Metric GPT-5 Nano GPT-5 Nano medium Release: 2025-08-07 GLM 5 GLM 5 none Release: 2026-02-12
Score 6.3 6.6
Rank #54 #50
Consistency 6.5 9.6
Tests Correct
Attempt pass rate 59.3% 51.9%
Flaky tests 8 1
Total Runs 54 54
Cost per result 0.942 0.217
Total Cost $0.066 $0.020
Input Price $0.050 / 1M $0.720 / 1M
Output Price $0.400 / 1M $2.300 / 1M
Output Tokens 4,980 1,959
Reasoning Tokens 156,288 0
Response Time (avg) 44.13s 4.23s
Response Time (max) 204.02s 11.07s
Response Time (total) 485.47s 46.51s

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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 6.7 3.5 66.7% 1 40.73s 480 12,992
GLM 5 5.6 3.5 33.3% 1 8.84s 408 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 8.5 6.8 83.3% 1 11.90s 382 4,096
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 19.81s 869 13,440
GLM 5 7.7 10.0 66.7% 0 2.05s 264 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

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