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Anthropic: Claude Opus 4.8 vs Z.ai: GLM 5

Last updated at: 2026-05-28

Metric Claude Opus 4.8 Claude Opus 4.8 medium Release: 2026-05-28 GLM 5 GLM 5 medium Release: 2026-02-12
Score 8.7 8.2
Rank #12 #19
Reliability 10.0 10.0
Consistency 9.6 8.4
Tests Correct
Attempt pass rate 83.3% 81.7%
Flaky tests 1 4
Total Runs 60 60
Cost per result 6.285 1.676
Total Cost $1.006 $0.212
Input Price $5.000 / 1M $0.600 / 1M
Output Price $25.000 / 1M $1.920 / 1M
Output Tokens 23,201 21,558
Reasoning Tokens 5,901 95,772
Response Time (avg) 9.34s 32.67s
Response Time (max) 38.03s 99.85s
Response Time (total) 186.84s 392.01s

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) Output Tokens Reasoning Tokens
Claude Opus 4.8 10.0 10.0 100.0% 0 3.95s 1,179 478
GLM 5 10.0 10.0 100.0% 0 23.66s 480 7,056
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Opus 4.8 10.0 10.0 100.0% 0 14.97s 6,651 1,381
GLM 5 10.0 10.0 100.0% 0 89.47s 2,985 45,706
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Opus 4.8 9.8 10.0 100.0% 0 38.03s 5,260 1,588
GLM 5 10.0 10.0 100.0% 0 28.96s 662 3,242
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Opus 4.8 7.1 5.6 83.3% 1 12.29s 481 312
GLM 5 7.1 5.6 83.3% 1 8.90s 567 3,734
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Opus 4.8 5.3 10.0 33.3% 0 14.15s 7,477 900
GLM 5 3.5 4.4 33.3% 2 0ms 13,176 14,137
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Opus 4.8 10.0 10.0 100.0% 0 2.46s 237 0
GLM 5 6.1 3.1 66.7% 1 14.69s 2,020 2,248
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Opus 4.8 10.0 10.0 100.0% 0 3.32s 373 320
GLM 5 10.0 10.0 100.0% 0 7.25s 1,001 2,129
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Opus 4.8 10.0 10.0 100.0% 0 3.95s 791 483
GLM 5 10.0 10.0 100.0% 0 11.33s 33 4,076
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Opus 4.8 10.0 10.0 100.0% 0 8.96s 301 225
GLM 5 10.0 10.0 100.0% 0 15.93s 233 994
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Opus 4.8 3.0 10.0 0.0% 0 6.14s 451 214
GLM 5 3.0 10.0 0.0% 0 67.37s 401 12,450

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