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Mercury 2.5 vs Xing4.0 29b A4b (medium)

Mercury 2.5 leads on average score with 4.1 vs 3.7. Xing4.0 29b A4b (medium) has the lower benchmark cost at $0.000 vs $0.026. Mercury 2.5 is faster at 5.10s vs 371.69s, with pass rates of 24.6% vs 26.1%.

Last updated at: 2026-10-17

Compared models

Rank
#388
Total Output Tokens
89,958
Response Time (avg)
5.10s
Total Cost
$0.026
Rank
#398
Total Output Tokens
107,980
Response Time (avg)
371.69s
Total Cost
$0.000
Recommended model Mercury 2.5

It has the best score here (4.1), while responding about 72.9x faster than Xing4.0 29b A4b (medium).

Detailed comparison

Metric Mercury 2.5 Mercury 2.5 none Release: 2026-09-08 Xing4.0 29b A4b Xing4.0 29b A4b medium Release: 2026-10-17 Free Available
Score 4.1 3.7
Rank #388 #398
Reliability 10.0 7.3
Consistency 7.6 6.2
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 24.6% 26.1%
Flaky tests 7 11
Total Runs 69 69
Cost per result 1.298 0.000
Total Cost $0.026 $0.000
Input Price $0.040 / 1M $0.000 / 1M
Output Price $0.150 / 1M $0.000 / 1M
Cache Read Price $0.004 / 1M N/A
Cache Write Price N/A N/A
Total Input Tokens 311,488 98,467
Output Tokens 89,958 3,385
Reasoning Tokens 0 104,595
Response Time (avg) 5.10s 371.69s
Response Time (max) 63.41s 971.85s
Response Time (total) 117.24s 8548.88s
Parameters ~100B 29B total (4B active)
Availability Closed Open source

Cache prices apply to input tokens. Reads reuse cached prompts; writes store them and can cost extra. Output tokens use the output price.

Model generation showcase

Hamster playing table tennis

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

#388 Mercury 2.5

none
Cost
$0.001
Time
2.7s
Tokens
2,749 tok

#398 Xing4.0 29b A4b

medium
Reached the allocated time limit (600 seconds) without receiving showcase output.
Cost
$0.000
Time
600.0s
Tokens
0 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 3.7 7.0 22.2% 1 12.50s 7,888 61,297 0
Xing4.0 29b A4b 4.2 5.1 33.3% 2 798.00s 1,889 502 27,115

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