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Mercury 2.5 Preview (high) vs Beam 1.0 501B A23B (xhigh)

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 $0.688. Mercury 2.5 Preview (high) is faster at 7.61s vs 9.18s, with pass rates of 65.2% vs 63.8%.

Last updated at: 2026-10-17

Compared models

Rank
#224
Total Output Tokens
180,597
Response Time (avg)
7.61s
Total Cost
$0.040
Rank
#226
Total Output Tokens
158,497
Response Time (avg)
9.18s
Total Cost
$0.688
Recommended model Mercury 2.5 Preview (high)

It has the best score here (6.5), while costing about 17.6x less than Beam 1.0 501B A23B (xhigh).

Detailed comparison

Metric Mercury 2.5 Preview Mercury 2.5 Preview high Release: 2026-09-02 Beam 1.0 501B A23B Beam 1.0 501B A23B xhigh Release: 2026-10-17
Score 6.5 6.5
Rank #224 #226
Reliability 9.9 10.0
Consistency 8.0 8.3
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 65.2% 63.8%
Flaky tests 6 5
Total Runs 69 69
Cost per result 0.319 5.730
Total Cost $0.040 $0.688
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 298,512 212,065
Output Tokens 3,178 4,428
Reasoning Tokens 177,419 154,069
Response Time (avg) 7.61s 9.18s
Response Time (max) 86.84s 44.64s
Response Time (total) 175.08s 211.12s
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.

#224 Mercury 2.5 Preview

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

#226 Beam 1.0 501B A23B

xhigh
Cost
$0.009
Time
16.5s
Tokens
6,827 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
Beam 1.0 501B A23B 10.0 10.0 100.0% 0 20.68s 7,801 585 46,192

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