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

Beam 1.0 501B A23B (medium) leads on average score with 6.6 vs 6.5. Mercury 2.5 Preview (high) has the lower benchmark cost at $0.040 vs $0.499. Beam 1.0 501B A23B (medium) is faster at 6.27s vs 7.61s, with pass rates of 65.2% vs 65.2%.

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
#220
Total Output Tokens
98,521
Response Time (avg)
6.27s
Total Cost
$0.499
Recommended model Mercury 2.5 Preview (high)

Its score stays close to the best score here (6.5 vs 6.6), while costing about 12.8x less than Beam 1.0 501B A23B (medium).

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 medium Release: 2026-10-17
Score 6.5 6.6
Rank #224 #220
Reliability 9.9 10.0
Consistency 8.0 9.3
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 65.2% 65.2%
Flaky tests 6 2
Total Runs 69 69
Cost per result 0.319 3.561
Total Cost $0.040 $0.499
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 298,512 202,937
Output Tokens 3,178 4,328
Reasoning Tokens 177,419 94,193
Response Time (avg) 7.61s 6.27s
Response Time (max) 86.84s 31.55s
Response Time (total) 175.08s 144.28s
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

#220 Beam 1.0 501B A23B

medium
Cost
$0.005
Time
11.8s
Tokens
4,267 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 11.81s 7,791 440 27,204

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