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OpenAI: GPT-5.6 Terra vs Z.ai: GLM 5.2

Summary

GPT-5.6 Terra (high) vs GLM 5.2 (high) benchmark comparison: GPT-5.6 Terra (high) leads on average score with 8.2 vs 8.0. GLM 5.2 (high) has the lower benchmark cost at $0.554 vs $0.852. GPT-5.6 Terra (high) is faster at 10.89s vs 37.09s, with pass rates of 68.3% vs 77.8%.

Recommended model: GPT-5.6 Terra (high) - It has the best score here (8.2), while responding about 3.4x faster than GLM 5.2 (high).

Last updated at: 2026-07-10

Metric GPT-5.6 Terra GPT-5.6 Terra high Release: 2026-07-09 GLM 5.2 GLM 5.2 high Release: 2026-06-17
Score 8.2 8.0
Rank #29 #32
Reliability 10.0 9.3
Consistency 9.6 7.6
Tests Correct
Attempt pass rate 68.3% 77.8%
Flaky tests 1 6
Total Runs 63 63
Cost per result 6.086 4.255
Total Cost $0.852 $0.554
Input Price $2.500 / 1M $0.770 / 1M
Output Price $15.000 / 1M $2.420 / 1M
Total Input Tokens 34,218 34,993
Output Tokens 1,908 51,575
Reasoning Tokens 49,189 166,065
Response Time (avg) 10.89s 37.09s
Response Time (max) 91.49s 180.69s
Response Time (total) 228.65s 778.91s

Generation showcase

Hamster playing table tennis

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

#29 GPT-5.6 Terra

high
Cost
$0.055
Time
30.2s
Tokens
3,748 tok

#32 GLM 5.2

high
Invalid SVG
Cost
$0.000
Time
300.0s
Tokens
0 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
GPT-5.6 Terra 8.3 10.0 75.0% 0 2.54s 606 158 700
GLM 5.2 10.0 10.0 100.0% 0 5.80s 639 406 2,660
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.6 Terra 7.6 7.2 77.8% 1 9.14s 7,302 370 6,087
GLM 5.2 6.4 4.4 77.8% 2 73.03s 5,124 2,302 22,546
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.6 Terra 10.0 10.0 100.0% 0 6.94s 11,019 314 627
GLM 5.2 10.0 10.0 100.0% 0 43.51s 12,696 711 4,267
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.6 Terra 10.0 10.0 100.0% 0 938ms 7,140 222 0
GLM 5.2 10.0 10.0 100.0% 0 5.81s 7,143 435 1,414
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.6 Terra 5.3 10.0 33.3% 0 43.44s 723 70 32,942
GLM 5.2 3.5 4.4 33.3% 2 73.97s 551 46,693 90,566
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.6 Terra 5.1 10.0 0.0% 0 3.03s 477 113 216
GLM 5.2 10.0 10.0 100.0% 0 12.90s 498 63 1,743
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.6 Terra 10.0 10.0 100.0% 0 2.14s 660 96 319
GLM 5.2 10.0 10.0 100.0% 0 4.26s 678 151 1,210
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.6 Terra 7.7 10.0 66.7% 0 5.45s 642 277 2,613
GLM 5.2 6.0 4.6 66.7% 2 33.71s 665 568 22,392
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.6 Terra 10.0 10.0 100.0% 0 4.97s 5,454 258 168
GLM 5.2 10.0 10.0 100.0% 0 9.25s 6,861 246 503
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.6 Terra 3.0 10.0 0.0% 0 23.30s 195 30 5,517
GLM 5.2 3.0 10.0 0.0% 0 127.82s 138 0 18,764

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