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Claude Opus 5 vs Step 3.7 Flash (low)

The average score is effectively tied at 7.1 vs 7.2. Step 3.7 Flash (low) has the lower benchmark cost at $0.449 vs $2.766. Claude Opus 5 is faster at 10.78s vs 20.72s, with pass rates of 55.1% vs 63.8%.

Last updated at: 2026-10-01

Compared models

Rank
#149
Total Output Tokens
31,386
Response Time (avg)
10.78s
Total Cost
$2.766
Rank
#147
Total Output Tokens
339,108
Response Time (avg)
20.72s
Total Cost
$0.449
Recommended model Step 3.7 Flash (low)

It has the best score here (7.2), while costing about 6.2x less than Claude Opus 5.

Detailed comparison

Metric Claude Opus 5 Claude Opus 5 none Release: 2026-07-25 Step 3.7 Flash Step 3.7 Flash low Release: 2026-05-29
Score 7.1 7.2
Rank #149 #147
Reliability 10.0 10.0
Consistency 9.6 7.9
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 55.1% 63.8%
Flaky tests 1 6
Total Runs 69 69
Cost per result 23.044 4.078
Total Cost $2.766 $0.449
Input Price $5.000 / 1M $0.200 / 1M
Output Price $25.000 / 1M $1.150 / 1M
Total Input Tokens 396,120 292,685
Output Tokens 31,386 339,108
Reasoning Tokens 0 0
Response Time (avg) 10.78s 20.72s
Response Time (max) 79.61s 124.75s
Response Time (total) 247.96s 476.67s
Parameters ~5T total (~500B active) 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.

#149 Claude Opus 5

none
Cost
$0.271
Time
149.3s
Tokens
10,962 tok

#147 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
Claude Opus 5 5.9 9.7 33.3% 0 5.54s 10,590 2,886 0
Step 3.7 Flash 8.2 7.2 88.9% 1 9.46s 7,437 18,685 0

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