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Mercury 2.5 Preview (medium) vs GPT-6 Sol

The average score is effectively tied at 6.8 vs 6.8. Mercury 2.5 Preview (medium) has the lower benchmark cost at $0.037 vs $0.551. Mercury 2.5 Preview (medium) is faster at 6.66s vs 9.02s, with pass rates of 66.7% vs 63.8%.

Last updated at: 2026-10-01

Compared models

Rank
#171
Total Output Tokens
150,107
Response Time (avg)
6.66s
Total Cost
$0.037
Rank
#172
Total Output Tokens
7,989
Response Time (avg)
9.02s
Total Cost
$0.551
Recommended model Mercury 2.5 Preview (medium)

It has the best score here (6.8), while costing about 15.0x less than GPT-6 Sol.

Detailed comparison

Metric Mercury 2.5 Preview Mercury 2.5 Preview medium Release: 2026-09-02 GPT-6 Sol GPT-6 Sol none Release: 2026-09-23
Score 6.8 6.8
Rank #171 #172
Reliability 10.0 10.0
Consistency 9.6 8.5
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 66.7% 63.8%
Flaky tests 1 4
Total Runs 69 69
Cost per result 0.244 4.232
Total Cost $0.037 $0.551
Input Price $0.000 / 1M $2.000 / 1M
Output Price $0.000 / 1M $10.000 / 1M
Total Input Tokens 397,291 235,086
Output Tokens 6,355 7,989
Reasoning Tokens 143,752 0
Response Time (avg) 6.66s 9.02s
Response Time (max) 74.63s 57.02s
Response Time (total) 153.29s 207.45s
Parameters ~100B ~2T total (~150B active)
Availability Closed Closed

Model generation showcase

Hamster playing table tennis

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

#171 Mercury 2.5 Preview

medium
Cost
$0.001
Time
2.7s
Tokens
2,241 tok

#172 GPT-6 Sol

none
Cost
$0.030
Time
31.9s
Tokens
3,055 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

Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Mercury 2.5 Preview 7.8 10.0 66.7% 0 3.86s 7,839 552 22,126
GPT-6 Sol 5.5 10.0 33.3% 0 12.23s 7,302 389 0

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