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Mercury 2.5 Preview (medium) vs Beam 1.0 501B A23B (max)

Mercury 2.5 Preview (medium) leads on average score with 6.8 vs 6.4. Mercury 2.5 Preview (medium) has the lower benchmark cost at $0.039 vs $0.799. Mercury 2.5 Preview (medium) is faster at 6.66s vs 11.10s, with pass rates of 66.7% vs 56.5%.

Last updated at: 2026-10-17

Compared models

Rank
#199
Total Output Tokens
150,107
Response Time (avg)
6.66s
Total Cost
$0.039
Rank
#234
Total Output Tokens
199,769
Response Time (avg)
11.10s
Total Cost
$0.799
Recommended model Mercury 2.5 Preview (medium)

It has the best score here (6.8), while costing about 20.8x less than Beam 1.0 501B A23B (max).

Detailed comparison

Metric Mercury 2.5 Preview Mercury 2.5 Preview medium Release: 2026-09-02 Beam 1.0 501B A23B Beam 1.0 501B A23B max Release: 2026-10-17
Score 6.8 6.4
Rank #199 #234
Reliability 10.0 10.0
Consistency 9.6 9.4
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 66.7% 56.5%
Flaky tests 1 2
Total Runs 69 69
Cost per result 0.244 6.654
Total Cost $0.039 $0.799
Input Price $0.040 / 1M $1.000 / 1M
Output Price $0.150 / 1M $3.000 / 1M
Cache Read Price N/A $0.100 / 1M
Cache Write Price N/A N/A
Total Input Tokens 397,291 199,105
Output Tokens 6,355 4,274
Reasoning Tokens 143,752 195,495
Response Time (avg) 6.66s 11.10s
Response Time (max) 74.63s 54.48s
Response Time (total) 153.29s 255.26s
Parameters ~100B 501B total (23B 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.

#199 Mercury 2.5 Preview

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

#234 Beam 1.0 501B A23B

max
Cost
$0.010
Time
21.4s
Tokens
7,699 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
Beam 1.0 501B A23B 10.0 10.0 100.0% 0 17.15s 7,800 467 39,895

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