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StepFun: Step 3.5 Flash vs Z.ai: GLM 5.1

Last updated at: 2026-04-29

Metric Step 3.5 Flash Step 3.5 Flash medium Release: 2026-02-01 GLM 5.1 GLM 5.1 medium Release: 2026-04-07
Score 7.9 7.8
Rank #40 #44
Reliability N/A N/A
Consistency 9.1 8.6
Tests Correct
Attempt pass rate 70.6% 75.9%
Flaky tests 2 3
Total Runs 49 54
Cost per result 0.000 1.674
Total Cost $0.000 $0.201
Input Price $0.100 / 1M $1.050 / 1M
Output Price $0.300 / 1M $3.500 / 1M
Output Tokens 71,904 8,005
Reasoning Tokens 155,607 49,090
Response Time (avg) 26.78s 24.13s
Response Time (max) 170.45s 118.52s
Response Time (total) 294.58s 410.25s

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Score vs Total Cost

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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
Step 3.5 Flash 10.0 10.0 100.0% 0 13.56s 14,376 17,668
GLM 5.1 10.0 10.0 100.0% 0 8.31s 401 5,122
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Step 3.5 Flash 10.0 10.0 100.0% 0 29.57s 1,176 12,984
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
Step 3.5 Flash 10.0 10.0 100.0% 0 15.01s 600 13,886
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
Step 3.5 Flash 5.3 7.2 44.4% 1 170.45s 45,350 90,436
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
Step 3.5 Flash 5.5 10.0 0.0% 0 6.54s 2,214 2,584
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
Step 3.5 Flash 8.5 6.8 83.3% 1 4.98s 2,284 3,412
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
Step 3.5 Flash 5.3 10.0 33.3% 0 7.72s 5,629 10,835
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
Step 3.5 Flash 10.0 10.0 100.0% 0 11.91s 275 3,802
GLM 5.1 3.0 10.0 0.0% 0 0ms 0 0
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Step 3.5 Flash - - - - - - - -
GLM 5.1 4.7 1.6 66.7% 1 118.52s 1,339 13,777

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