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GPT 5.3 Chat vs GPT-5.4 Nano (medium)

The average score is effectively tied at 7.5 vs 7.5. GPT-5.4 Nano (medium) has the lower benchmark cost at $0.142 vs $0.533. GPT 5.3 Chat is faster at 6.56s vs 13.32s, with pass rates of 65.2% vs 65.2%.

Last updated at: 2026-09-10

Compared models

Rank
#105
Total Output Tokens
28,179
Response Time (avg)
6.56s
Total Cost
$0.533
Rank
#102
Total Output Tokens
99,881
Response Time (avg)
13.32s
Total Cost
$0.142
Recommended model GPT-5.4 Nano (medium)

It has the best score here (7.5), while costing about 3.8x less than GPT 5.3 Chat.

Detailed comparison

Metric GPT 5.3 Chat GPT 5.3 Chat none Release: 2026-03-03 GPT-5.4 Nano GPT-5.4 Nano medium Release: 2026-03-17
Score 7.5 7.5
Rank #105 #102
Reliability 10.0 10.0
Consistency 8.6 8.5
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 65.2% 65.2%
Flaky tests 4 4
Total Runs 66 66
Cost per result 4.097 1.179
Total Cost $0.533 $0.142
Input Price $1.750 / 1M $0.200 / 1M
Output Price $14.000 / 1M $1.250 / 1M
Total Input Tokens 78,846 82,828
Output Tokens 28,179 7,100
Reasoning Tokens 0 92,781
Response Time (avg) 6.56s 13.32s
Response Time (max) 18.33s 94.06s
Response Time (total) 137.77s 292.97s
Parameters ~400B total (~17B active) ~120B total (~5B active)
Availability Closed Closed

Model generation showcase

Hamster playing table tennis

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

#105 GPT 5.3 Chat

none
Cost
$0.008
Time
8.1s
Tokens
634 tok

#102 GPT-5.4 Nano

medium
Cost
$0.007
Time
24.6s
Tokens
4,943 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 Chat 5.6 4.7 55.6% 2 10.52s 7,302 6,632 0
GPT-5.4 Nano 6.1 4.7 66.7% 2 19.12s 7,305 516 20,778

Quick Compare

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