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OpenAI: GPT-5.5 vs Z.ai: GLM 5

Summary

GPT-5.5 vs GLM 5 benchmark comparison: GPT-5.5 leads on average score with 9.3 vs 6.0. GLM 5 has the lower benchmark cost at $0.027 vs $0.907. GLM 5 is faster at 4.03s vs 9.76s, with pass rates of 85.7% vs 44.4%.

Recommended model: GPT-5.5 - It has the strongest score in this comparison (9.3) and the best overall balance of cost and response time across all 2 models.

Last updated at: 2026-07-02

Metric GPT-5.5 GPT-5.5 low Release: 2026-04-24 GLM 5 GLM 5 none Release: 2026-02-12
Score 9.3 6.0
Rank #4 #104
Reliability 10.0 10.0
Consistency 10.0 9.7
Tests Correct
Attempt pass rate 85.7% 44.4%
Flaky tests 0 1
Total Runs 63 63
Cost per result 5.035 0.263
Total Cost $0.907 $0.027
Input Price $5.000 / 1M $0.600 / 1M
Output Price $30.000 / 1M $1.920 / 1M
Total Input Tokens 34,209 37,135
Output Tokens 2,046 1,989
Reasoning Tokens 22,460 0
Response Time (avg) 9.76s 4.03s
Response Time (max) 56.19s 11.07s
Response Time (total) 204.92s 56.37s

Generation showcase

Hamster playing table tennis

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

#4 GPT-5.5

low
Cost
$0.068
Time
37.0s
Tokens
2,339 tok

#104 GLM 5

none
Cost
$0.007
Time
32.1s
Tokens
2,023 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-5.5 10.0 10.0 100.0% 0 4.41s 606 238 1,020
GLM 5 4.8 10.0 25.0% 0 2.37s 510 275 0
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.5 10.0 10.0 100.0% 0 15.04s 7,302 423 6,402
GLM 5 4.0 7.8 11.1% 1 5.12s 7,256 428 0
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.5 10.0 10.0 100.0% 0 9.56s 11,019 303 717
GLM 5 3.0 10.0 0.0% 0 4.98s 12,812 406 0
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.5 10.0 10.0 100.0% 0 3.28s 7,140 228 157
GLM 5 10.0 10.0 100.0% 0 5.78s 7,107 203 0
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.5 5.3 10.0 33.3% 0 28.05s 723 69 11,609
GLM 5 3.0 10.0 0.0% 0 2.24s 643 19 0
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.5 10.0 10.0 100.0% 0 5.17s 477 133 245
GLM 5 10.0 10.0 100.0% 0 3.27s 477 103 0
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.5 9.9 10.0 100.0% 0 3.74s 660 93 415
GLM 5 10.0 10.0 100.0% 0 1.48s 636 61 0
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.5 10.0 10.0 100.0% 0 4.74s 642 279 954
GLM 5 7.7 10.0 66.7% 0 1.91s 609 261 0
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.5 10.0 10.0 100.0% 0 4.96s 5,445 250 101
GLM 5 10.0 10.0 100.0% 0 11.07s 6,899 220 0
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.5 3.0 10.0 0.0% 0 10.06s 195 30 840
GLM 5 3.0 10.0 0.0% 0 3.62s 186 13 0

Quick Compare

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