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OpenAI: GPT-5.2 Chat vs Z.ai: GLM 5.2

Summary

GPT-5.2 Chat vs GLM 5.2 benchmark comparison: GLM 5.2 leads on average score with 8.7 vs 8.5. GLM 5.2 has the lower benchmark cost at $0.324 vs $0.393. GPT-5.2 Chat is faster at 7.13s vs 23.28s, with pass rates of 74.6% vs 84.1%.

Recommended model: GPT-5.2 Chat - Its score stays close to the best score here (8.5 vs 8.7), while responding about 3.3x faster than GLM 5.2.

Last updated at: 2026-06-17

Metric GPT-5.2 Chat GPT-5.2 Chat none Release: 2025-12-11 GLM 5.2 GLM 5.2 medium Release: 2026-06-17
Score 8.5 8.7
Rank #19 #14
Reliability 10.0 9.5
Consistency 8.9 8.4
Tests Correct
Attempt pass rate 74.6% 84.1%
Flaky tests 3 4
Total Runs 63 63
Cost per result 2.803 2.159
Total Cost $0.393 $0.324
Input Price $1.750 / 1M $1.400 / 1M
Output Price $14.000 / 1M $4.400 / 1M
Total Input Tokens 34,212 37,199
Output Tokens 23,744 12,261
Reasoning Tokens 0 49,500
Response Time (avg) 7.13s 23.28s
Response Time (max) 38.52s 101.36s
Response Time (total) 149.69s 488.94s

Generation showcase

Hamster playing table tennis

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

#19 GPT-5.2 Chat

none
Cost
$0.010
Time
15.3s
Tokens
797 tok

#14 GLM 5.2

medium
Cost
$0.041
Time
195.8s
Tokens
9,287 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-5.2 Chat 8.7 7.9 91.7% 1 3.40s 606 1,807 0
GLM 5.2 10.0 10.0 100.0% 0 5.89s 639 497 2,634
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.2 Chat 8.8 7.8 88.9% 1 9.82s 7,305 6,731 0
GLM 5.2 8.2 7.2 88.9% 1 40.96s 7,317 1,475 17,123
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.2 Chat 10.0 10.0 100.0% 0 9.12s 11,019 1,243 0
GLM 5.2 10.0 10.0 100.0% 0 51.96s 12,696 458 4,531
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.2 Chat 10.0 10.0 100.0% 0 3.05s 7,140 980 0
GLM 5.2 10.0 10.0 100.0% 0 13.44s 7,149 348 2,345
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.2 Chat 5.3 10.0 33.3% 0 17.78s 723 7,810 0
GLM 5.2 4.1 4.4 44.5% 2 45.47s 551 8,188 11,606
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.2 Chat 4.4 3.0 33.3% 1 3.20s 477 335 0
GLM 5.2 10.0 10.0 100.0% 0 17.39s 498 54 1,842
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.2 Chat 9.8 10.0 100.0% 0 5.51s 660 1,441 0
GLM 5.2 9.9 10.0 100.0% 0 7.90s 678 94 1,518
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.2 Chat 7.7 10.0 66.7% 0 4.10s 642 1,603 0
GLM 5.2 8.2 7.2 88.9% 1 13.13s 672 536 4,822
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.2 Chat 10.0 10.0 100.0% 0 4.68s 5,445 555 0
GLM 5.2 10.0 10.0 100.0% 0 20.41s 6,861 230 550
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.2 Chat 3.0 10.0 0.0% 0 6.89s 195 1,239 0
GLM 5.2 3.0 10.0 0.0% 0 34.25s 138 381 2,529

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