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Anthropic: Claude Opus 4.8 vs Z.ai: GLM 5.2

Summary

Claude Opus 4.8 vs GLM 5.2 benchmark comparison: Claude Opus 4.8 leads on average score with 8.8 vs 8.7. GLM 5.2 has the lower benchmark cost at $0.324 vs $1.107. Claude Opus 4.8 is faster at 9.66s vs 23.28s, with pass rates of 84.1% vs 84.1%.

Recommended model: GLM 5.2 - Its score stays close to the best score here (8.7 vs 8.8), while costing about 3.4x less than Claude Opus 4.8.

Last updated at: 2026-06-17

Metric Claude Opus 4.8 Claude Opus 4.8 medium Release: 2026-05-28 GLM 5.2 GLM 5.2 medium Release: 2026-06-17
Score 8.8 8.7
Rank #12 #14
Reliability 10.0 9.5
Consistency 9.6 8.4
Tests Correct
Attempt pass rate 84.1% 84.1%
Flaky tests 1 4
Total Runs 63 63
Cost per result 6.512 2.159
Total Cost $1.107 $0.324
Input Price $5.000 / 1M $1.400 / 1M
Output Price $25.000 / 1M $4.400 / 1M
Total Input Tokens 61,007 37,199
Output Tokens 26,495 12,261
Reasoning Tokens 5,901 49,500
Response Time (avg) 9.66s 23.28s
Response Time (max) 38.03s 101.36s
Response Time (total) 202.89s 488.94s

Generation showcase

Hamster playing table tennis

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

#12 Claude Opus 4.8

medium
Cost
$0.057
Time
23.1s
Tokens
2,412 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
Claude Opus 4.8 10.0 10.0 100.0% 0 3.95s 834 1,179 478
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
Claude Opus 4.8 10.0 10.0 100.0% 0 15.33s 10,590 9,945 1,381
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
Claude Opus 4.8 9.8 10.0 100.0% 0 38.03s 23,561 5,260 1,588
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
Claude Opus 4.8 7.1 5.6 83.3% 1 12.29s 10,503 481 312
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
Claude Opus 4.8 5.3 10.0 33.3% 0 14.15s 975 7,477 900
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
Claude Opus 4.8 10.0 10.0 100.0% 0 2.46s 708 237 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
Claude Opus 4.8 10.0 10.0 100.0% 0 3.32s 909 373 320
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
Claude Opus 4.8 10.0 10.0 100.0% 0 3.95s 894 791 483
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
Claude Opus 4.8 10.0 10.0 100.0% 0 8.96s 11,775 301 225
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
Claude Opus 4.8 3.0 10.0 0.0% 0 6.14s 258 451 214
GLM 5.2 3.0 10.0 0.0% 0 34.25s 138 381 2,529

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