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DeepSeek: DeepSeek V4 Pro vs Inception: Mercury 2

Last updated at: 2026-04-24

Metric DeepSeek V4 Pro DeepSeek V4 Pro none Release: 2026-04-24 Mercury 2 Mercury 2 medium Release: 2026-02-24
Score 6.7 6.5
Rank #59 #62
Consistency 9.5 8.6
Tests Correct
Attempt pass rate 51.9% 53.7%
Flaky tests 1 3
Total Runs 26 54
Cost per result 0.317 0.580
Total Cost $0.029 $0.047
Input Price $1.740 / 1M $0.250 / 1M
Output Price $3.480 / 1M $0.750 / 1M
Output Tokens 1,596 3,972
Reasoning Tokens 0 48,333
Response Time (avg) 24.23s 2.21s
Response Time (max) 109.46s 14.63s
Response Time (total) 436.17s 37.51s

Top Models by Score

Score vs Total Cost

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Score vs Response Time (avg)

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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 Pro 4.8 10.0 25.0% 0 36.12s 221 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 Pro 10.0 10.0 100.0% 0 33.40s 246 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 Pro 9.5 10.0 100.0% 0 34.55s 826 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 Pro 10.0 10.0 100.0% 0 54.04s 65 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 Pro 5.3 10.0 33.3% 0 3.74s 6 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 Pro 4.5 10.0 0.0% 0 6.06s 45 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 Pro 6.5 10.0 50.0% 0 3.57s 22 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 Pro 6.0 7.1 44.4% 1 28.25s 92 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 Pro 10.0 10.0 100.0% 0 6.47s 73 0
Mercury 2 10.0 10.0 100.0% 0 1.89s 180 1,956

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