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Inception: Mercury 2 vs OpenAI: GPT-5.4

Last updated at: 2026-06-03

Metric Mercury 2 Mercury 2 medium Release: 2026-02-24 GPT-5.4 GPT-5.4 none Release: 2026-03-05
Score 6.5 5.6
Rank #89 #121
Reliability 10.0 10.0
Consistency 8.8 9.1
Tests Correct
Attempt pass rate 51.7% 38.3%
Flaky tests 3 2
Total Runs 60 60
Cost per result 0.611 1.644
Total Cost $0.055 $0.116
Input Price $0.250 / 1M $2.500 / 1M
Output Price $0.750 / 1M $15.000 / 1M
Total Input Tokens 32,570 31,593
Output Tokens 4,022 2,402
Reasoning Tokens 58,405 0
Response Time (avg) 2.27s 1.45s
Response Time (max) 14.63s 2.95s
Response Time (total) 43.20s 29.00s

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) Input Tokens Output Tokens Reasoning Tokens
Mercury 2 6.9 9.9 50.0% 0 1.12s 554 2,546 2,609
GPT-5.4 3.2 8.0 8.3% 1 1.21s 606 406 0
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Mercury 2 7.2 6.5 66.7% 1 2.29s 4,519 270 8,514
GPT-5.4 6.8 10.0 50.0% 0 1.99s 4,686 501 0
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Mercury 2 10.0 10.0 100.0% 0 3.28s 12,909 268 4,887
GPT-5.4 3.0 10.0 0.0% 0 2.89s 11,019 291 0
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Mercury 2 7.3 5.9 83.3% 1 1.11s 6,234 183 1,656
GPT-5.4 10.0 10.0 100.0% 0 1.04s 7,140 222 0
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Mercury 2 2.9 7.2 11.1% 1 6.48s 695 41 30,754
GPT-5.4 5.3 7.2 44.4% 1 1.07s 723 50 0
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Mercury 2 4.8 10.0 0.0% 0 821ms 456 137 542
GPT-5.4 4.4 9.9 0.0% 0 1.78s 477 184 0
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Mercury 2 10.0 10.0 100.0% 0 1.07s 340 14 958
GPT-5.4 6.5 10.0 50.0% 0 1.07s 660 81 0
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Mercury 2 5.4 10.0 33.3% 0 949ms 601 361 2,781
GPT-5.4 5.6 9.8 33.3% 0 1.44s 642 381 0
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Mercury 2 10.0 10.0 100.0% 0 1.89s 6,080 180 1,956
GPT-5.4 10.0 10.0 100.0% 0 2.75s 5,445 246 0
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Mercury 2 3.0 10.0 0.0% 0 2.58s 182 22 3,748
GPT-5.4 3.0 10.0 0.0% 0 990ms 195 40 0

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