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OpenAI: GPT-5.6 Terra vs Z.ai: GLM 5

Summary

GPT-5.6 Terra (high) vs GLM 5 (medium) benchmark comparison: GLM 5 (medium) leads on average score with 8.6 vs 8.2. GLM 5 (medium) has the lower benchmark cost at $0.228 vs $0.852. GPT-5.6 Terra (high) is faster at 10.89s vs 33.54s, with pass rates of 68.3% vs 82.5%.

Recommended model: GLM 5 (medium) - It has the best score here (8.6), while costing about 3.8x less than GPT-5.6 Terra (high).

Last updated at: 2026-07-09

Metric GPT-5.6 Terra GPT-5.6 Terra high Release: 2026-07-09 GLM 5 GLM 5 medium Release: 2026-02-12
Score 8.2 8.6
Rank #29 #18
Reliability 10.0 10.0
Consistency 9.6 8.5
Tests Correct
Attempt pass rate 68.3% 82.5%
Flaky tests 1 4
Total Runs 63 63
Cost per result 6.086 1.668
Total Cost $0.852 $0.228
Input Price $2.500 / 1M $0.600 / 1M
Output Price $15.000 / 1M $1.920 / 1M
Total Input Tokens 34,218 35,224
Output Tokens 1,908 21,570
Reasoning Tokens 49,189 102,996
Response Time (avg) 10.89s 33.54s
Response Time (max) 91.49s 99.85s
Response Time (total) 228.65s 435.99s

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

#18 GLM 5

medium
Cost
$0.005
Time
20.7s
Tokens
2,068 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 10.0 10.0 100.0% 0 23.66s 555 480 7,056
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 10.0 10.0 100.0% 0 74.30s 7,254 2,997 52,930
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 10.0 10.0 100.0% 0 28.96s 12,804 662 3,242
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 7.1 5.6 83.3% 1 8.90s 5,508 567 3,734
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 3.5 4.4 33.3% 2 0ms 260 13,176 14,137
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 6.1 3.1 66.7% 1 14.69s 477 2,020 2,248
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 10.0 10.0 100.0% 0 7.25s 636 1,001 2,129
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 10.0 10.0 100.0% 0 11.33s 609 33 4,076
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 10.0 10.0 100.0% 0 15.93s 6,935 233 994
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 3.0 10.0 0.0% 0 67.37s 186 401 12,450

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