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Ember-1 (low) 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 $0.662. GPT-5.4 Nano (medium) is faster at 13.32s vs 30.98s, with pass rates of 66.7% vs 65.2%.

Last updated at: 2026-09-28

Compared models

Rank
#120
Total Output Tokens
37,467
Response Time (avg)
30.98s
Total Cost
$0.662
Rank
#117
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 4.7x less than Ember-1 (low).

Detailed comparison

Metric Ember-1 Ember-1 low Release: 2026-09-28 GPT-5.4 Nano GPT-5.4 Nano medium Release: 2026-03-17
Score 7.5 7.5
Rank #120 #117
Reliability 8.1 10.0
Consistency 8.5 8.5
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 66.7% 65.2%
Flaky tests 4 4
Total Runs 66 66
Cost per result 5.085 1.179
Total Cost $0.662 $0.142
Input Price $3.000 / 1M $0.200 / 1M
Output Price $15.000 / 1M $1.250 / 1M
Total Input Tokens 33,011 82,828
Output Tokens 4,780 7,100
Reasoning Tokens 32,687 92,781
Response Time (avg) 30.98s 13.32s
Response Time (max) 93.10s 94.06s
Response Time (total) 681.50s 292.97s
Parameters ~2.8T total (~104B 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.

#120 Ember-1

low
Cost
$0.016
Time
24.2s
Tokens
1,165 tok

#117 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
Ember-1 10.0 10.0 100.0% 0 37.91s 8,097 2,518 13,142
GPT-5.4 Nano 6.1 4.7 66.7% 2 19.12s 7,305 516 20,778

Quick Compare

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