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Mercury 2.5 Preview (high) vs Qwen3.5-27B

The average score is effectively tied at 6.6 vs 6.6. Mercury 2.5 Preview (high) has the lower benchmark cost at $0.030 vs $0.058. Mercury 2.5 Preview (high) is faster at 4.01s vs 4.77s, with pass rates of 65.2% vs 45.5%.

Last updated at: 2026-09-02

Rank
#157
Total Output Tokens
163,505
Response Time (avg)
4.01s
Total Cost
$0.030
Rank
#152
Total Output Tokens
24,323
Response Time (avg)
4.77s
Total Cost
$0.058
Recommended model Mercury 2.5 Preview (high)

It has the best score here (6.6), while costing about 2.0x less than Qwen3.5-27B.

Detailed comparison

Metric Mercury 2.5 Preview Mercury 2.5 Preview high Release: 2026-09-02 Qwen3.5-27B Qwen3.5-27B none Release: 2026-02-24
Score 6.6 6.6
Rank #157 #152
Reliability 10.0 10.0
Consistency 8.2 9.3
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 65.2% 45.5%
Flaky tests 5 2
Total Runs 66 66
Cost per result 0.243 0.678
Total Cost $0.030 $0.058
Input Price $0.040 / 1M $0.195 / 1M
Output Price $0.150 / 1M $1.560 / 1M
Total Input Tokens 115,759 102,325
Output Tokens 2,562 24,323
Reasoning Tokens 160,943 0
Response Time (avg) 4.01s 4.77s
Response Time (max) 17.71s 69.46s
Response Time (total) 88.25s 105.00s
Parameters ~100B 27B
Availability Closed Open source

Model generation showcase

Hamster playing table tennis

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

#157 Mercury 2.5 Preview

high
Cost
$0.001
Time
4.5s
Tokens
3,851 tok

#152 Qwen3.5-27B

none
Cost
$0.007
Time
42.9s
Tokens
4,273 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 6.7 7.8 55.6% 1 6.13s 7,751 485 42,569
Qwen3.5-27B 5.8 10.0 33.3% 0 1.80s 7,913 415 0

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