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OpenAI: GPT-5.4 Nano vs Z.ai: GLM 5.1

Last updated at: 2026-04-30

Metric GPT-5.4 Nano GPT-5.4 Nano medium Release: 2026-03-17 GLM 5.1 GLM 5.1 medium Release: 2026-04-07
Score 7.6 7.8
Rank #50 #45
Reliability N/A N/A
Consistency 9.0 8.6
Tests Correct
Attempt pass rate 68.5% 75.9%
Flaky tests 2 3
Total Runs 54 54
Cost per result 0.747 1.674
Total Cost $0.083 $0.201
Input Price $0.200 / 1M $1.050 / 1M
Output Price $1.250 / 1M $3.500 / 1M
Output Tokens 2,946 8,005
Reasoning Tokens 58,132 49,090
Response Time (avg) 11.21s 24.13s
Response Time (max) 94.06s 118.52s
Response Time (total) 201.80s 410.25s

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
GPT-5.4 Nano 8.3 10.0 75.0% 0 4.52s 683 2,254
GLM 5.1 10.0 10.0 100.0% 0 8.31s 401 5,122
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.4 Nano 10.0 10.0 100.0% 0 13.41s 472 3,616
GLM 5.1 4.7 1.6 66.7% 1 118.52s 1,339 13,777
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.4 Nano 9.8 10.0 100.0% 0 24.13s 349 5,719
GLM 5.1 9.5 10.0 100.0% 0 43.11s 327 4,206
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.4 Nano 10.0 10.0 100.0% 0 2.54s 234 516
GLM 5.1 10.0 10.0 100.0% 0 9.33s 991 4,552
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.4 Nano 5.9 7.2 55.6% 1 38.18s 60 43,325
GLM 5.1 5.3 10.0 33.3% 0 29.77s 969 11,314
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.4 Nano 4.5 10.0 0.0% 0 4.15s 179 443
GLM 5.1 10.0 10.0 100.0% 0 20.95s 2,875 2,875
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.4 Nano 9.8 10.0 100.0% 0 1.88s 95 521
GLM 5.1 6.4 5.8 66.7% 1 7.47s 204 1,617
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.4 Nano 4.0 7.1 22.2% 1 3.65s 640 1,356
GLM 5.1 8.2 7.2 88.9% 1 23.85s 899 5,627
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.4 Nano 10.0 10.0 100.0% 0 7.71s 234 382
GLM 5.1 3.0 10.0 0.0% 0 0ms 0 0

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