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OpenAI: GPT-5 Mini vs Z.ai: GLM 5.1

Last updated at: 2026-04-07

Metric GPT-5 Mini GPT-5 Mini medium Release: 2025-08-07 GLM 5.1 GLM 5.1 none Release: 2026-04-07
Score 6.8 5.6
Rank #47 #67
Consistency 8.5 8.2
Tests Correct
Attempt pass rate 58.8% 39.2%
Flaky tests 3 4
Total Runs 51 51
Cost per result 1.473 1.000
Total Cost $0.118 $0.050
Input Price $0.250 / 1M $1.000 / 1M
Output Price $2.000 / 1M $3.200 / 1M
Output Tokens 5,896 3,219
Reasoning Tokens 49,322 0
Response Time (avg) 24.02s 4.01s
Response Time (max) 88.15s 32.57s
Response Time (total) 408.39s 68.23s

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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 Mini 7.1 7.6 66.7% 1 13.86s 1,715 6,378
GLM 5.1 4.0 6.3 25.0% 2 2.11s 305 0
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5 Mini 10.0 10.0 100.0% 0 88.15s 754 11,520
GLM 5.1 2.8 2.1 33.3% 1 32.57s 2,129 0
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5 Mini 10.0 10.0 100.0% 0 12.58s 453 3,200
GLM 5.1 10.0 10.0 100.0% 0 1.08s 204 0
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5 Mini 3.6 7.2 22.2% 1 44.63s 293 14,016
GLM 5.1 2.9 7.2 11.1% 1 1.99s 24 0
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5 Mini 4.5 10.0 0.0% 0 13.50s 349 1,856
GLM 5.1 5.0 10.0 0.0% 0 790ms 39 0
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5 Mini 8.0 6.6 83.3% 1 15.66s 318 4,992
GLM 5.1 8.3 10.0 50.0% 0 1.58s 66 0
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5 Mini 5.6 9.8 33.3% 0 14.09s 1,527 5,760
GLM 5.1 5.7 10.0 33.3% 0 1.48s 152 0
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5 Mini 10.0 10.0 100.0% 0 18.64s 487 1,600
GLM 5.1 10.0 10.0 100.0% 0 10.68s 300 0

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