Navigate
Advertise here

Ember-1 (max) vs GPT 5.3 Chat

The average score is effectively tied at 6.7 vs 6.7. GPT 5.3 Chat has the lower benchmark cost at $0.533 vs $3.264. GPT 5.3 Chat is faster at 6.31s vs 97.34s, with pass rates of 59.4% vs 62.3%.

Last updated at: 2026-10-01

Compared models

Rank
#181
Total Output Tokens
186,901
Response Time (avg)
97.34s
Total Cost
$3.264
Rank
#182
Total Output Tokens
28,179
Response Time (avg)
6.31s
Total Cost
$0.533
Recommended model GPT 5.3 Chat

It has the best score here (6.7), while costing about 6.1x less than Ember-1 (max).

Detailed comparison

Metric Ember-1 Ember-1 max Release: 2026-09-28 GPT 5.3 Chat GPT 5.3 Chat none Release: 2026-03-03
Score 6.7 6.7
Rank #181 #182
Reliability 8.3 10.0
Consistency 7.8 8.6
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 59.4% 62.3%
Flaky tests 6 4
Total Runs 69 69
Cost per result 29.671 4.097
Total Cost $3.264 $0.533
Input Price $3.000 / 1M $0.000 / 1M
Output Price $15.000 / 1M $0.000 / 1M
Total Input Tokens 153,399 78,846
Output Tokens 7,803 28,179
Reasoning Tokens 179,098 0
Response Time (avg) 97.34s 6.31s
Response Time (max) 587.08s 18.33s
Response Time (total) 2238.73s 138.73s
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.

#181 Ember-1

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

#182 GPT 5.3 Chat

none
Cost
$0.008
Time
8.1s
Tokens
634 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 5.3 Chat 5.6 4.7 55.6% 2 10.52s 7,302 6,632 0

Quick Compare

Switch Comparison Pair