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

GLM 5.2 (medium) leads on average score with 7.8 vs 7.8. GLM 5.2 (medium) has the lower benchmark cost at $0.213 vs $2.077. Claude Opus 4.8 (low) is faster at 12.74s vs 23.28s, with pass rates of 80.3% vs 80.3%.

Recommended modelGLM 5.2 (medium)It has the best score here (7.8), while costing about 9.8x less than Claude Opus 4.8 (low).

Last updated at: 2026-07-17

Metric Claude Opus 4.8 Claude Opus 4.8 low Release: 2026-05-28 GLM 5.2 GLM 5.2 medium Release: 2026-06-17
Score 7.8 7.8
Rank #39 #36
Reliability 10.0 9.5
Consistency 8.9 8.0
Tests Correct
Attempt pass rate 80.3% 80.3%
Flaky tests 3 4
Total Runs 66 63
Cost per result 12.979 2.159
Total Cost $2.077 $0.213
Input Price $5.000 / 1M $0.919 / 1M
Output Price $25.000 / 1M $2.887 / 1M
Total Input Tokens 156,525 37,199
Output Tokens 43,141 12,261
Reasoning Tokens 8,617 49,500
Response Time (avg) 12.74s 23.28s
Response Time (max) 127.97s 101.36s
Response Time (total) 280.29s 488.94s

Hamster playing table tennis

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

#39 Claude Opus 4.8

low
Cost
$0.031
Time
14.1s
Tokens
1,345 tok

#36 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

Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Opus 4.8 6.6 4.6 77.8% 2 7.58s 10,590 3,637 809
GLM 5.2 8.2 7.2 88.9% 1 40.96s 7,317 1,475 17,123

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