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DeepSeek: DeepSeek V4 Pro vs Inception: Mercury 2

Summary

DeepSeek V4 Pro vs Mercury 2 benchmark comparison: Mercury 2 leads on average score with 6.6 vs 5.7. DeepSeek V4 Pro has the lower benchmark cost at $0.025 vs $0.058. Mercury 2 is faster at 2.24s vs 12.38s, with pass rates of 42.9% vs 54.0%.

Recommended model: Mercury 2 - It has the best score here (6.6), while responding about 5.5x faster than DeepSeek V4 Pro.

Last updated at: 2026-06-04

Metric DeepSeek V4 Pro DeepSeek V4 Pro none Release: 2026-04-24 Mercury 2 Mercury 2 medium Release: 2026-02-24
Score 5.7 6.6
Rank #113 #81
Reliability 8.5 10.0
Consistency 8.5 8.8
Tests Correct
Attempt pass rate 42.9% 54.0%
Flaky tests 4 3
Total Runs 63 63
Cost per result 0.660 0.578
Total Cost $0.025 $0.058
Input Price $0.435 / 1M $0.250 / 1M
Output Price $0.870 / 1M $0.750 / 1M
Total Input Tokens 44,845 35,116
Output Tokens 5,349 4,048
Reasoning Tokens 0 61,219
Response Time (avg) 12.38s 2.24s
Response Time (max) 58.65s 14.63s
Response Time (total) 260.06s 44.72s

Generation showcase

Hamster playing table tennis

Prompt: Create a detailed SVG illustration of a hamster playing table tennis.

#113 DeepSeek V4 Pro

none
Invalid SVG
Cost
$0.000
Time
300.0s
Tokens
0 tok

#81 Mercury 2

medium
Cost
$0.002
Time
2.1s
Tokens
1,702 tok

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
DeepSeek V4 Pro 3.5 8.0 16.7% 1 14.02s 540 704 0
Mercury 2 6.9 9.9 50.0% 0 1.12s 554 2,546 2,609
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Pro 4.6 7.9 22.2% 1 6.11s 7,279 531 0
Mercury 2 8.2 7.7 77.8% 1 2.04s 7,065 296 11,328
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Pro 9.5 10.0 100.0% 0 25.49s 20,773 1,911 0
Mercury 2 10.0 10.0 100.0% 0 3.28s 12,909 268 4,887
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Pro 6.9 5.8 66.7% 1 30.54s 5,633 170 0
Mercury 2 7.3 5.9 83.3% 1 1.11s 6,234 183 1,656
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Pro 5.3 10.0 33.3% 0 3.17s 666 18 0
Mercury 2 2.9 7.2 11.1% 1 6.48s 695 41 30,754
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Pro 4.3 9.9 0.0% 0 3.75s 471 132 0
Mercury 2 4.8 10.0 0.0% 0 821ms 456 137 542
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Pro 6.3 10.0 50.0% 0 8.23s 627 64 0
Mercury 2 10.0 10.0 100.0% 0 1.07s 340 14 958
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Pro 7.6 7.2 77.8% 1 15.95s 594 173 0
Mercury 2 5.4 10.0 33.3% 0 949ms 601 361 2,781
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Pro 10.0 10.0 100.0% 0 5.92s 8,079 219 0
Mercury 2 10.0 10.0 100.0% 0 1.89s 6,080 180 1,956
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Pro 3.0 10.0 0.0% 0 15.59s 183 1,427 0
Mercury 2 3.0 10.0 0.0% 0 2.58s 182 22 3,748

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