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

GPT-5 Nano (medium) leads on average score with 6.1 vs 5.7. GLM 5 has the lower benchmark cost at $0.041 vs $0.114. GLM 5 is faster at 4.03s vs 54.87s, with pass rates of 56.1% vs 42.4%.

Recommended modelGLM 5Its score stays close to the best score here (5.7 vs 6.1), while costing about 2.8x less than GPT-5 Nano (medium).

Last updated at: 2026-07-21

Metric GPT-5 Nano GPT-5 Nano medium Release: 2025-08-07 GLM 5 GLM 5 none Release: 2026-02-12
Score 6.1 5.7
Rank #134 #147
Reliability 10.0 10.0
Consistency 7.0 9.3
Tests Correct
Attempt pass rate 56.1% 42.4%
Flaky tests 8 1
Total Runs 66 63
Cost per result 1.267 0.263
Total Cost $0.114 $0.041
Input Price $0.050 / 1M $0.950 / 1M
Output Price $0.400 / 1M $2.551 / 1M
Total Input Tokens 94,935 37,135
Output Tokens 12,042 1,989
Reasoning Tokens 261,056 0
Response Time (avg) 54.87s 4.03s
Response Time (max) 227.89s 11.07s
Response Time (total) 822.99s 56.37s

Hamster playing table tennis

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

#134 GPT-5 Nano

medium
Cost
$0.006
Time
108.5s
Tokens
13,209 tok

#147 GLM 5

none
Cost
$0.007
Time
32.1s
Tokens
2,023 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

Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5 Nano 7.0 7.7 55.6% 1 41.62s 7,305 740 41,152
GLM 5 4.0 7.8 11.1% 1 5.12s 7,256 428 0

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