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GPT-5.3-Codex (medium) vs Pareto (default)

The average score is effectively tied at 9.1 vs 9.1. GPT-5.3-Codex (medium) has the lower benchmark cost at $1.318 vs $1.520. GPT-5.3-Codex (medium) is faster at 18.87s vs 33.47s, with pass rates of 84.1% vs 87.0%.

Last updated at: 2026-10-26

Compared models

Rank
#43
Total Output Tokens
66,287
Response Time (avg)
18.87s
Total Cost
$1.318
Rank
#47
Total Output Tokens
128,144
Response Time (avg)
33.47s
Total Cost
$1.520
Recommended model GPT-5.3-Codex (medium)

It has the best score here (9.1), while responding about 1.8x faster than Pareto (default).

Detailed comparison

Metric GPT-5.3-Codex GPT-5.3-Codex medium Release: 2026-02-05 Pareto Pareto default Release: 2026-09-18
Score 9.1 9.1
Rank #43 #47
Reliability 10.0 10.0
Consistency 8.6 9.2
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 84.1% 87.0%
Flaky tests 4 2
Total Runs 69 69
Cost per result 7.753 8.000
Total Cost $1.318 $1.520
Input Price $1.750 / 1M $2.500 / 1M
Output Price $14.000 / 1M $7.500 / 1M
Cache Read Price $0.175 / 1M $0.250 / 1M
Cache Write Price N/A N/A
Total Input Tokens 222,794 223,559
Output Tokens 7,357 128,144
Reasoning Tokens 58,930 0
Response Time (avg) 18.87s 33.47s
Response Time (max) 100.93s 143.33s
Response Time (total) 433.94s 769.84s
Parameters ~1.2T total (~80B active) -
Availability Closed Closed

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.

#43 GPT-5.3-Codex

medium
Cost
$0.049
Time
54.9s
Tokens
3,580 tok

#47 Pareto

default
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-5.3-Codex 10.0 10.0 100.0% 0 19.50s 7,302 535 10,890
Pareto 10.0 10.0 100.0% 0 50.12s 7,471 1,949 0

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