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Ember-1 (max) vs GPT-5.4 Mini

The average score is effectively tied at 5.9 vs 5.9. GPT-5.4 Mini has the lower benchmark cost at $0.095 vs $2.792. GPT-5.4 Mini is faster at 1.58s vs 98.92s, with pass rates of 57.6% vs 31.8%.

Last updated at: 2026-09-28

Compared models

Rank
#248
Total Output Tokens
180,806
Response Time (avg)
98.92s
Total Cost
$2.792
Rank
#251
Total Output Tokens
7,898
Response Time (avg)
1.58s
Total Cost
$0.095
Recommended model GPT-5.4 Mini

It has the best score here (5.9), while costing about 29.4x less than Ember-1 (max).

Detailed comparison

Metric Ember-1 Ember-1 max Release: 2026-09-28 GPT-5.4 Mini GPT-5.4 Mini none Release: 2026-03-17
Score 5.9 5.9
Rank #248 #251
Reliability 7.5 10.0
Consistency 7.7 9.3
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 57.6% 31.8%
Flaky tests 6 2
Total Runs 66 66
Cost per result 27.915 1.581
Total Cost $2.792 $0.095
Input Price $3.000 / 1M $0.750 / 1M
Output Price $15.000 / 1M $4.500 / 1M
Total Input Tokens 26,449 79,076
Output Tokens 4,183 7,898
Reasoning Tokens 176,623 0
Response Time (avg) 98.92s 1.58s
Response Time (max) 587.08s 9.92s
Response Time (total) 2176.20s 34.86s
Parameters ~2.8T total (~104B active) ~400B total (~17B active)
Availability Closed Closed

Model generation showcase

Hamster playing table tennis

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

#248 Ember-1

max
Cost
$0.163
Time
229.4s
Tokens
11,002 tok

#251 GPT-5.4 Mini

none
Cost
$0.010
Time
11.7s
Tokens
2,151 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 5.2 4.4 55.6% 2 105.09s 3,362 1,149 27,957
GPT-5.4 Mini 5.5 10.0 33.3% 0 913ms 7,305 401 0

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