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Inception: Mercury 2 vs xAI: Grok 4.1 Fast

Last updated at: 2026-04-16

Metric Mercury 2 Mercury 2 medium Release: 2026-02-24 Grok 4.1 Fast Grok 4.1 Fast medium Release: 2025-11-19
Score 6.5 6.7
Rank #53 #51
Consistency 8.6 7.2
Tests Correct
Attempt pass rate 53.7% 64.8%
Flaky tests 3 6
Total Runs 54 54
Cost per result 0.580 0.613
Total Cost $0.047 $0.056
Input Price $0.250 / 1M $0.200 / 1M
Output Price $0.750 / 1M $0.500 / 1M
Output Tokens 3,972 2,010
Reasoning Tokens 48,333 91,298
Response Time (avg) 2.21s 23.88s
Response Time (max) 14.63s 121.79s
Response Time (total) 37.51s 262.66s

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
Mercury 2 6.9 9.9 50.0% 0 1.12s 2,546 2,609
Grok 4.1 Fast 8.7 7.9 91.7% 1 3.81s 108 4,741
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Mercury 2 10.0 10.0 100.0% 0 1.53s 249 2,213
Grok 4.1 Fast 2.3 1.1 33.3% 1 23.58s 821 6,703
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Mercury 2 10.0 10.0 100.0% 0 3.28s 268 4,887
Grok 4.1 Fast 10.0 10.0 100.0% 0 37.64s 261 12,272
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Mercury 2 7.3 5.9 83.3% 1 1.11s 183 1,656
Grok 4.1 Fast 10.0 10.0 100.0% 0 6.63s 180 5,409
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Mercury 2 2.9 7.2 11.1% 1 6.48s 41 30,754
Grok 4.1 Fast 5.8 4.4 66.7% 2 121.79s 11 37,657
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Mercury 2 4.8 10.0 0.0% 0 821ms 137 542
Grok 4.1 Fast 4.2 9.9 0.0% 0 16.25s 127 3,456
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Mercury 2 10.0 10.0 100.0% 0 1.07s 14 958
Grok 4.1 Fast 6.6 10.0 50.0% 0 5.30s 55 3,489
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Mercury 2 3.9 7.5 22.2% 1 934ms 354 2,758
Grok 4.1 Fast 5.3 7.2 44.4% 1 8.08s 187 6,086
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Mercury 2 10.0 10.0 100.0% 0 1.89s 180 1,956
Grok 4.1 Fast 2.8 1.6 33.3% 1 27.71s 260 11,485

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