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DeepSeek: DeepSeek V4 Flash vs Grok 4.1 Fast

Last updated at: 2026-05-19

Metric DeepSeek V4 Flash DeepSeek V4 Flash none Release: 2026-04-24 Free Available Grok 4.1 Fast Grok 4.1 Fast none Release: 2025-11-19
Score 5.2 4.4
Rank #127 #146
Reliability 10.0 10.0
Consistency 9.2 8.8
Tests Correct
Attempt pass rate 31.6% 22.8%
Flaky tests 2 3
Total Runs 57 57
Cost per result 0.147 0.273
Total Cost $0.008 $0.009
Input Price $0.112 / 1M $0.000 / 1M
Output Price $0.224 / 1M $0.000 / 1M
Output Tokens 4,464 1,733
Reasoning Tokens 0 0
Response Time (avg) 28.01s 1.67s
Response Time (max) 111.96s 5.51s
Response Time (total) 532.17s 20.08s

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) Output Tokens Reasoning Tokens
DeepSeek V4 Flash 3.0 10.0 0.0% 0 20.18s 174 0
Grok 4.1 Fast 3.2 10.0 0.0% 0 1.07s 235 0
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Flash 6.3 10.0 0.0% 0 24.04s 471 0
Grok 4.1 Fast 5.3 3.4 33.3% 1 1.79s 567 0
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Flash 4.5 2.1 66.7% 1 111.96s 2,664 0
Grok 4.1 Fast 3.0 10.0 0.0% 0 3.33s 105 0
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Flash 10.0 10.0 100.0% 0 23.79s 195 0
Grok 4.1 Fast 10.0 10.0 100.0% 0 943ms 180 0
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Flash 5.3 10.0 33.3% 0 19.73s 18 0
Grok 4.1 Fast 5.9 7.2 55.6% 1 1.06s 15 0
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Flash 4.2 9.9 0.0% 0 23.74s 67 0
Grok 4.1 Fast 4.4 9.9 0.0% 0 1.08s 112 0
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Flash 6.5 10.0 50.0% 0 17.54s 321 0
Grok 4.1 Fast 3.0 10.0 0.0% 0 923ms 56 0
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Flash 3.1 7.3 11.1% 1 22.96s 207 0
Grok 4.1 Fast 3.0 10.0 0.0% 0 1.28s 243 0
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Flash 10.0 10.0 100.0% 0 77.93s 327 0
Grok 4.1 Fast 2.8 1.6 33.3% 1 5.51s 208 0
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Flash 3.0 10.0 0.0% 0 3.07s 20 0
Grok 4.1 Fast 3.0 10.0 0.0% 0 731ms 12 0

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