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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 7.2 vs 7.1. GLM 5.2 has the lower benchmark cost at $0.076 vs $0.539. Claude Opus 4.8 is faster at 3.47s vs 6.34s, with pass rates of 61.9% vs 60.3%.

Recommended model: GLM 5.2 - Its score stays close to the best score here (7.1 vs 7.2), while costing about 7.1x less than Claude Opus 4.8.

Last updated at: 2026-06-17

Metric Claude Opus 4.8 Claude Opus 4.8 none Release: 2026-05-28 GLM 5.2 GLM 5.2 none Release: 2026-06-17
Score 7.2 7.1
Rank #57 #61
Reliability 10.0 9.9
Consistency 9.2 9.6
Tests Correct
Attempt pass rate 61.9% 60.3%
Flaky tests 2 1
Total Runs 63 63
Cost per result 4.485 0.628
Total Cost $0.539 $0.076
Input Price $5.000 / 1M $1.400 / 1M
Output Price $25.000 / 1M $4.400 / 1M
Total Input Tokens 67,104 38,671
Output Tokens 8,107 4,817
Reasoning Tokens 0 0
Response Time (avg) 3.47s 6.34s
Response Time (max) 17.73s 20.69s
Response Time (total) 72.90s 133.19s

Generation showcase

Hamster playing table tennis

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

#57 Claude Opus 4.8

none
Cost
$0.053
Time
22.0s
Tokens
2,253 tok

#61 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
Claude Opus 4.8 6.5 10.0 50.0% 0 3.40s 834 1,472 0
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
Claude Opus 4.8 5.5 10.0 33.3% 0 3.29s 10,590 1,332 0
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
Claude Opus 4.8 9.5 10.0 100.0% 0 17.73s 29,658 3,259 0
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
Claude Opus 4.8 7.3 5.8 83.3% 1 1.77s 10,503 308 0
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
Claude Opus 4.8 5.3 7.2 44.4% 1 1.66s 975 61 0
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
Claude Opus 4.8 10.0 10.0 100.0% 0 3.48s 708 230 0
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
Claude Opus 4.8 9.9 10.0 100.0% 0 1.37s 909 95 0
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
Claude Opus 4.8 7.7 10.0 66.7% 0 2.74s 894 783 0
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
Claude Opus 4.8 10.0 10.0 100.0% 0 5.35s 11,775 355 0
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
Claude Opus 4.8 3.0 10.0 0.0% 0 3.41s 258 212 0
GLM 5.2 3.0 10.0 0.0% 0 3.41s 189 13 0

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