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

Step 3.7 Flash (low) leads on average score with 7.2 vs 6.5. Mercury 2.5 (high) has the lower benchmark cost at $0.044 vs $0.449. Mercury 2.5 (high) is faster at 7.62s vs 20.72s, with pass rates of 59.4% vs 63.8%.

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
#173
Total Output Tokens
339,108
Response Time (avg)
20.72s
Total Cost
$0.449
Recommended model Mercury 2.5 (high)

Its score stays close to the best score here (6.5 vs 7.2), while costing about 10.3x 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 6.5 7.2
Rank #224 #173
Reliability 9.8 10.0
Consistency 8.7 7.9
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 59.4% 63.8%
Flaky tests 4 6
Total Runs 69 69
Cost per result 0.362 4.078
Total Cost $0.044 $0.449
Input Price $0.040 / 1M $0.200 / 1M
Output Price $0.150 / 1M $1.150 / 1M
Cache Read Price $0.004 / 1M $0.040 / 1M
Cache Write Price N/A N/A
Total Input Tokens 358,562 292,685
Output Tokens 4,266 339,108
Reasoning Tokens 189,410 0
Response Time (avg) 7.62s 20.72s
Response Time (max) 80.30s 124.75s
Response Time (total) 175.36s 476.67s
Parameters ~100B 198B total (11B 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

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

#173 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