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Mercury 2.5 (high) vs Step 3.7 Flash (low)

Step 3.7 Flash (low) leads on average score with 7.1 vs 7.1. Mercury 2.5 (high) has the lower benchmark cost at $0.031 vs $0.390. Mercury 2.5 (high) is faster at 4.32s vs 17.87s, with pass rates of 62.1% vs 63.6%.

Last updated at: 2026-09-08

Compared models

Rank
#134
Total Output Tokens
174,547
Response Time (avg)
4.32s
Total Cost
$0.031
Rank
#132
Total Output Tokens
320,393
Response Time (avg)
17.87s
Total Cost
$0.390
Recommended model Mercury 2.5 (high)

Its score stays close to the best score here (7.1 vs 7.1), while costing about 12.6x less than Step 3.7 Flash (low).

Detailed comparison

Metric Mercury 2.5 Mercury 2.5 high Release: 2026-09-08 Step 3.7 Flash Step 3.7 Flash low Release: 2026-05-29
Score 7.1 7.1
Rank #134 #132
Reliability 9.7 10.0
Consistency 8.6 8.1
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 62.1% 63.6%
Flaky tests 4 5
Total Runs 66 66
Cost per result 0.259 3.539
Total Cost $0.031 $0.390
Input Price $0.040 / 1M $0.200 / 1M
Output Price $0.150 / 1M $1.150 / 1M
Total Input Tokens 120,068 103,842
Output Tokens 3,402 320,393
Reasoning Tokens 171,145 0
Response Time (avg) 4.32s 17.87s
Response Time (max) 23.63s 124.75s
Response Time (total) 95.06s 393.04s
Parameters ~100B 198B total (11B active)
Availability Closed Open source

Model generation showcase

Hamster playing table tennis

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

#134 Mercury 2.5

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

#132 Step 3.7 Flash

low
Invalid SVG
Cost
$0.004
Time
25.3s
Tokens
3,072 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
Step 3.7 Flash 8.2 7.2 88.9% 1 9.46s 7,437 18,685 0

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