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OpenAI: GPT-5 Nano vs Z.ai: GLM 5.2

Summary

GPT-5 Nano vs GLM 5.2 benchmark comparison: GLM 5.2 leads on average score with 7.1 vs 6.7. GLM 5.2 has the lower benchmark cost at $0.051 vs $0.081. GLM 5.2 is faster at 6.34s vs 42.51s, with pass rates of 57.1% vs 60.3%.

Recommended model: GLM 5.2 - It has the best score here (7.1), while costing about 1.6x less than GPT-5 Nano.

Last updated at: 2026-07-02

Metric GPT-5 Nano GPT-5 Nano medium Release: 2025-08-07 GLM 5.2 GLM 5.2 none Release: 2026-06-17
Score 6.7 7.1
Rank #82 #63
Reliability 10.0 9.9
Consistency 7.3 9.6
Tests Correct
Attempt pass rate 57.1% 60.3%
Flaky tests 7 1
Total Runs 63 63
Cost per result 0.897 0.628
Total Cost $0.081 $0.051
Input Price $0.050 / 1M $0.930 / 1M
Output Price $0.400 / 1M $3.000 / 1M
Total Input Tokens 34,108 38,671
Output Tokens 5,464 4,817
Reasoning Tokens 192,064 0
Response Time (avg) 42.51s 6.34s
Response Time (max) 204.02s 20.69s
Response Time (total) 595.09s 133.19s

Generation showcase

Hamster playing table tennis

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

#82 GPT-5 Nano

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

#63 GLM 5.2

none
Invalid SVG
Cost
$0.033
Time
87.7s
Tokens
7,455 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

Anti-AI Tricks Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5 Nano 6.5 7.9 58.3% 1 25.50s 606 1,221 21,184
GLM 5.2 8.3 10.0 75.0% 0 3.70s 567 313 0
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 5.2 3.7 9.5 0.0% 0 7.55s 7,263 1,958 0
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5 Nano 10.0 10.0 100.0% 0 65.96s 11,019 578 17,984
GLM 5.2 10.0 10.0 100.0% 0 20.69s 14,296 1,489 0
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5 Nano 3.7 1.7 50.0% 2 21.42s 7,140 453 10,560
GLM 5.2 10.0 10.0 100.0% 0 7.17s 7,113 204 0
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5 Nano 5.2 4.4 55.6% 2 204.02s 619 237 64,448
GLM 5.2 5.3 10.0 33.3% 0 6.50s 696 27 0
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5 Nano 4.1 10.0 0.0% 0 17.51s 477 202 4,608
GLM 5.2 6.1 3.1 66.7% 1 4.42s 480 82 0
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5 Nano 9.8 10.0 100.0% 0 15.64s 660 312 4,736
GLM 5.2 9.8 10.0 100.0% 0 3.84s 642 66 0
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5 Nano 5.3 7.2 44.4% 1 20.63s 642 929 14,272
GLM 5.2 7.7 10.0 66.7% 0 3.31s 618 265 0
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5 Nano 10.0 10.0 100.0% 0 33.30s 5,445 558 6,976
GLM 5.2 10.0 10.0 100.0% 0 15.76s 6,807 400 0
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5 Nano 3.0 10.0 0.0% 0 20.13s 195 234 6,144
GLM 5.2 3.0 10.0 0.0% 0 3.41s 189 13 0

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