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GPT-5.5 (medium) vs Pareto

GPT-5.5 (medium) leads on average score with 9.0 vs 8.9. Pareto has the lower benchmark cost at $1.172 vs $4.163. Pareto is faster at 31.51s vs 38.97s, with pass rates of 87.9% vs 86.4%.

Last updated at: 2026-09-18

Compared models

Rank
#28
Total Output Tokens
125,316
Response Time (avg)
38.97s
Total Cost
$4.163
Rank
#34
Total Output Tokens
119,230
Response Time (avg)
31.51s
Total Cost
$1.172
Recommended model Pareto

Its score stays close to the best score here (8.9 vs 9.0), while costing about 3.6x less than GPT-5.5 (medium).

Detailed comparison

Metric GPT-5.5 GPT-5.5 medium Release: 2026-04-24 Pareto Pareto none Release: 2026-09-18
Score 9.0 8.9
Rank #28 #34
Reliability 10.0 10.0
Consistency 8.9 9.2
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 87.9% 86.4%
Flaky tests 3 2
Total Runs 66 66
Cost per result 23.127 6.506
Total Cost $4.163 $1.172
Input Price $5.000 / 1M $2.500 / 1M
Output Price $30.000 / 1M $7.500 / 1M
Total Input Tokens 80,668 110,734
Output Tokens 5,617 119,230
Reasoning Tokens 119,699 0
Response Time (avg) 38.97s 31.51s
Response Time (max) 332.10s 143.33s
Response Time (total) 857.43s 693.29s
Parameters ~1.5T total (~100B active) -
Availability Closed Closed

Model generation showcase

Hamster playing table tennis

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

#28 GPT-5.5

medium
Cost
$0.112
Time
71.9s
Tokens
3,807 tok

#34 Pareto

none
Cost
$0.034
Time
170.7s
Tokens
4,581 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 8.8 7.8 88.9% 1 59.77s 7,305 362 24,959
Pareto 10.0 10.0 100.0% 0 50.12s 7,471 1,949 0

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