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DeepSeek: DeepSeek V4 Pro vs xAI: Grok 4.20

Last updated at: 2026-04-24

Metric DeepSeek V4 Pro DeepSeek V4 Pro none Release: 2026-04-24 Grok 4.20 Grok 4.20 medium Release: 2026-03-31
Score 6.7 7.0
Rank #59 #54
Consistency 9.5 7.8
Tests Correct
Attempt pass rate 51.9% 66.7%
Flaky tests 1 5
Total Runs 26 54
Cost per result 0.317 8.252
Total Cost $0.029 $0.743
Input Price $1.740 / 1M $2.000 / 1M
Output Price $3.480 / 1M $6.000 / 1M
Output Tokens 1,596 1,744
Reasoning Tokens 0 109,882
Response Time (avg) 24.23s 10.33s
Response Time (max) 109.46s 29.87s
Response Time (total) 436.17s 185.87s

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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
Grok 4.20 8.2 7.9 83.3% 1 3.36s 280 8,476
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
Grok 4.20 4.3 1.1 66.7% 1 24.33s 250 12,804
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
Grok 4.20 10.0 10.0 100.0% 0 17.40s 232 9,556
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
Grok 4.20 10.0 10.0 100.0% 0 4.17s 180 5,333
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
Grok 4.20 5.3 10.0 33.3% 0 27.03s 375 49,339
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
Grok 4.20 5.8 2.8 66.7% 1 7.09s 47 4,252
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
Grok 4.20 7.3 5.9 83.3% 1 4.42s 40 5,474
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
Grok 4.20 6.4 7.7 55.6% 1 3.89s 143 8,028
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
Grok 4.20 3.0 10.0 0.0% 0 13.68s 197 6,620

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