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Inception: Mercury 2 vs OpenAI: GPT-5.4 Mini

Last updated at: 2026-04-16

Metric Mercury 2 Mercury 2 none Release: 2026-02-24 GPT-5.4 Mini GPT-5.4 Mini none Release: 2026-03-17
Score 4.8 5.1
Rank #89 #84
Consistency 9.0 8.6
Tests Correct
Attempt pass rate 27.8% 35.2%
Flaky tests 2 3
Total Runs 54 54
Cost per result 0.165 0.630
Total Cost $0.007 $0.032
Input Price $0.250 / 1M $0.750 / 1M
Output Price $0.750 / 1M $4.500 / 1M
Output Tokens 1,625 2,418
Reasoning Tokens 0 0
Response Time (avg) 613ms 1.17s
Response Time (max) 1.27s 2.52s
Response Time (total) 11.04s 21.01s

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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
Mercury 2 3.0 10.0 0.0% 0 483ms 286 0
GPT-5.4 Mini 3.1 8.1 8.3% 1 929ms 654 0
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Mercury 2 3.6 8.9 0.0% 0 969ms 310 0
GPT-5.4 Mini 10.0 10.0 100.0% 0 1.19s 333 0
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Mercury 2 3.0 10.0 0.0% 0 606ms 131 0
GPT-5.4 Mini 3.0 10.0 0.0% 0 2.52s 298 0
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 667ms 180 0
GPT-5.4 Mini 10.0 10.0 100.0% 0 1.30s 222 0
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Mercury 2 5.3 7.2 44.4% 1 534ms 46 0
GPT-5.4 Mini 3.5 4.4 33.3% 2 937ms 88 0
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 628ms 159 0
GPT-5.4 Mini 4.8 10.0 0.0% 0 1.82s 174 0
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Mercury 2 6.5 10.0 50.0% 0 551ms 82 0
GPT-5.4 Mini 6.3 10.0 50.0% 0 728ms 101 0
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Mercury 2 3.1 10.0 0.0% 0 533ms 234 0
GPT-5.4 Mini 5.4 10.0 33.3% 0 860ms 293 0
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 1.27s 197 0
GPT-5.4 Mini 3.0 10.0 0.0% 0 2.32s 255 0

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