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Mercury 2.5 (high) vs Mercury 2.5 Preview (high)

The average score is effectively tied at 6.5 vs 6.5. Mercury 2.5 Preview (high) has the lower benchmark cost at $0.040 vs $0.044. Mercury 2.5 Preview (high) is faster at 7.61s vs 7.62s, with pass rates of 59.4% vs 65.2%.

Last updated at: 2026-10-16

Compared models

Rank
#224
Total Output Tokens
193,676
Response Time (avg)
7.62s
Total Cost
$0.044
Rank
#223
Total Output Tokens
180,597
Response Time (avg)
7.61s
Total Cost
$0.040
Recommended model Mercury 2.5 Preview (high)

It has the strongest score in this comparison (6.5) and the best overall balance of cost and response time across 2 models.

Detailed comparison

Metric Mercury 2.5 Mercury 2.5 high Release: 2026-09-08 Mercury 2.5 Preview Mercury 2.5 Preview high Release: 2026-09-02
Score 6.5 6.5
Rank #224 #223
Reliability 9.8 9.9
Consistency 8.7 8.0
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 59.4% 65.2%
Flaky tests 4 6
Total Runs 69 69
Cost per result 0.362 0.319
Total Cost $0.044 $0.040
Input Price $0.040 / 1M $0.040 / 1M
Output Price $0.150 / 1M $0.150 / 1M
Cache Read Price $0.004 / 1M N/A
Cache Write Price N/A N/A
Total Input Tokens 358,562 298,512
Output Tokens 4,266 3,178
Reasoning Tokens 189,410 177,419
Response Time (avg) 7.62s 7.61s
Response Time (max) 80.30s 86.84s
Response Time (total) 175.36s 175.08s
Parameters ~100B ~100B
Availability Closed Closed

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.

#224 Mercury 2.5

high
Cost
$0.001
Time
3.5s
Tokens
2,447 tok

#223 Mercury 2.5 Preview

high
Cost
$0.001
Time
4.5s
Tokens
3,851 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 6.4 7.8 44.4% 1 6.58s 7,757 415 44,012
Mercury 2.5 Preview 6.7 7.8 55.6% 1 6.13s 7,751 485 42,569

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