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DeepSeek: DeepSeek V4 Flash vs Z.ai: GLM 5.1

Summary

DeepSeek V4 Flash vs GLM 5.1 benchmark comparison: GLM 5.1 leads on average score with 5.7 vs 5.0. DeepSeek V4 Flash has the lower benchmark cost at $0.008 vs $0.058. GLM 5.1 is faster at 4.10s vs 26.75s, with pass rates of 30.2% vs 41.3%.

Recommended model: GLM 5.1 - It has the best score here (5.7), while responding about 6.5x faster than DeepSeek V4 Flash.

Last updated at: 2026-06-04

Metric DeepSeek V4 Flash DeepSeek V4 Flash none Release: 2026-04-24 GLM 5.1 GLM 5.1 none Release: 2026-04-07
Score 5.0 5.7
Rank #139 #112
Reliability 10.0 10.0
Consistency 8.9 8.5
Tests Correct
Attempt pass rate 30.2% 41.3%
Flaky tests 3 4
Total Runs 63 63
Cost per result 0.203 0.843
Total Cost $0.008 $0.058
Input Price $0.099 / 1M $0.980 / 1M
Output Price $0.197 / 1M $3.080 / 1M
Total Input Tokens 50,127 47,133
Output Tokens 13,710 3,754
Reasoning Tokens 0 0
Response Time (avg) 26.75s 4.10s
Response Time (max) 111.96s 32.57s
Response Time (total) 561.82s 86.18s

Generation showcase

Hamster playing table tennis

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

#139 DeepSeek V4 Flash

none
Cost
$0.004
Time
157.6s
Tokens
11,297 tok

#112 GLM 5.1

none
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
DeepSeek V4 Flash 3.0 10.0 0.0% 0 20.18s 540 174 0
GLM 5.1 4.0 6.3 25.0% 2 2.11s 555 305 0
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Flash 4.2 7.4 11.1% 1 17.13s 7,279 9,717 0
GLM 5.1 3.9 9.7 0.0% 0 4.96s 7,256 525 0
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Flash 4.5 2.1 66.7% 1 111.96s 24,398 2,664 0
GLM 5.1 2.8 2.1 33.3% 1 32.57s 22,831 2,129 0
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Flash 10.0 10.0 100.0% 0 23.79s 7,290 195 0
GLM 5.1 10.0 10.0 100.0% 0 1.08s 7,107 204 0
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Flash 5.3 10.0 33.3% 0 19.73s 666 18 0
GLM 5.1 2.9 7.2 11.1% 1 1.99s 687 24 0
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Flash 4.2 9.9 0.0% 0 23.74s 471 67 0
GLM 5.1 5.0 10.0 0.0% 0 790ms 477 39 0
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Flash 6.5 10.0 50.0% 0 17.54s 627 321 0
GLM 5.1 9.8 10.0 100.0% 0 1.98s 636 66 0
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Flash 3.1 7.3 11.1% 1 23.72s 594 207 0
GLM 5.1 7.7 10.0 66.7% 0 1.45s 609 151 0
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Flash 10.0 10.0 100.0% 0 77.93s 8,079 327 0
GLM 5.1 10.0 10.0 100.0% 0 10.68s 6,789 300 0
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Flash 3.0 10.0 0.0% 0 3.07s 183 20 0
GLM 5.1 3.0 10.0 0.0% 0 2.34s 186 11 0

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