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GPT-5.5 vs Step 3.7 Flash (high)

GPT-5.5 leads on average score with 6.6 vs 6.6. GPT-5.5 has the lower benchmark cost at $1.212 vs $1.350. GPT-5.5 is faster at 4.75s vs 72.72s, with pass rates of 56.5% vs 58.0%.

Last updated at: 2026-10-01

Compared models

Rank
#185
Total Output Tokens
6,197
Response Time (avg)
4.75s
Total Cost
$1.212
Rank
#190
Total Output Tokens
1,100,052
Response Time (avg)
72.72s
Total Cost
$1.350
Recommended model GPT-5.5

It has the best score here (6.6), while responding about 15.3x faster than Step 3.7 Flash (high).

Detailed comparison

Metric GPT-5.5 GPT-5.5 none Release: 2026-04-24 Step 3.7 Flash Step 3.7 Flash high Release: 2026-05-29
Score 6.6 6.6
Rank #185 #190
Reliability 10.0 10.0
Consistency 9.3 8.5
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 56.5% 58.0%
Flaky tests 2 4
Total Runs 69 69
Cost per result 10.096 12.267
Total Cost $1.212 $1.350
Input Price $5.000 / 1M $0.200 / 1M
Output Price $30.000 / 1M $1.150 / 1M
Total Input Tokens 205,108 421,200
Output Tokens 6,197 1,100,052
Reasoning Tokens 0 0
Response Time (avg) 4.75s 72.72s
Response Time (max) 57.53s 364.99s
Response Time (total) 109.31s 1672.53s
Parameters ~1.5T total (~100B 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.

#185 GPT-5.5

none
Cost
$0.090
Time
54.3s
Tokens
3,063 tok

#190 Step 3.7 Flash

high
Cost
$0.007
Time
63.6s
Tokens
6,030 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
GPT-5.5 5.5 10.0 33.3% 0 1.35s 7,305 462 0
Step 3.7 Flash 4.0 6.0 22.2% 1 206.21s 6,057 327,340 0

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