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DeepSeek: DeepSeek V4 Flash vs Inception: Mercury 2

Last updated at: 2026-04-24

Metric DeepSeek V4 Flash DeepSeek V4 Flash none Release: 2026-04-24 Mercury 2 Mercury 2 medium Release: 2026-02-24
Score 5.3 6.5
Rank #89 #62
Consistency 9.1 8.6
Tests Correct
Attempt pass rate 33.3% 53.7%
Flaky tests 2 3
Total Runs 54 54
Cost per result 0.147 0.580
Total Cost $0.008 $0.047
Input Price $0.140 / 1M $0.250 / 1M
Output Price $0.280 / 1M $0.750 / 1M
Output Tokens 4,444 3,972
Reasoning Tokens 0 48,333
Response Time (avg) 29.39s 2.21s
Response Time (max) 111.96s 14.63s
Response Time (total) 529.10s 37.51s

Top Models by Score

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
DeepSeek V4 Flash 3.0 10.0 0.0% 0 20.18s 174 0
Mercury 2 6.9 9.9 50.0% 0 1.12s 2,546 2,609
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
Mercury 2 10.0 10.0 100.0% 0 1.53s 249 2,213
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
Mercury 2 10.0 10.0 100.0% 0 3.28s 268 4,887
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
Mercury 2 7.3 5.9 83.3% 1 1.11s 183 1,656
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
Mercury 2 2.9 7.2 11.1% 1 6.48s 41 30,754
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
Mercury 2 4.8 10.0 0.0% 0 821ms 137 542
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
Mercury 2 10.0 10.0 100.0% 0 1.07s 14 958
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
Mercury 2 3.9 7.5 22.2% 1 934ms 354 2,758
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
Mercury 2 10.0 10.0 100.0% 0 1.89s 180 1,956

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