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Ember-1 vs Step 3.5 Flash (medium)

The average score is effectively tied at 5.4 vs 5.4. Step 3.5 Flash (medium) has the lower benchmark cost at $0.105 vs $0.786. Ember-1 is faster at 22.65s vs 190.48s, with pass rates of 43.5% vs 49.3%.

Last updated at: 2026-10-01

Compared models

Rank
#277
Total Output Tokens
11,832
Response Time (avg)
22.65s
Total Cost
$0.786
Rank
#276
Total Output Tokens
607,130
Response Time (avg)
190.48s
Total Cost
$0.105
Recommended model Step 3.5 Flash (medium)

It has the best score here (5.4), while costing about 7.5x less than Ember-1.

Detailed comparison

Metric Ember-1 Ember-1 none Release: 2026-09-28 Step 3.5 Flash Step 3.5 Flash medium Release: 2026-02-01
Score 5.4 5.4
Rank #277 #276
Reliability 8.8 10.0
Consistency 8.6 8.3
Attempts 69/69 66/69
Tests Correct
Attempt pass rate 43.5% 49.3%
Flaky tests 4 3
Total Runs 69 66
Cost per result 9.817 1.047
Total Cost $0.786 $0.105
Input Price $3.000 / 1M $0.100 / 1M
Output Price $15.000 / 1M $0.300 / 1M
Total Input Tokens 202,617 139,086
Output Tokens 11,832 193,584
Reasoning Tokens 0 413,546
Response Time (avg) 22.65s 190.48s
Response Time (max) 93.12s 1597.85s
Response Time (total) 520.91s 3238.23s
Parameters ~2.8T total (~104B active) 196B total (11B active)
Availability Closed Open source

Model generation showcase

Hamster playing table tennis

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

#277 Ember-1

none
Cost
$0.156
Time
224.6s
Tokens
10,555 tok

#276 Step 3.5 Flash

medium
Cost
$0.008
Time
277.1s
Tokens
23,695 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 5.5 10.0 33.3% 0 1.94s 7,485 393 0
Step 3.5 Flash 2.4 5.2 0.0% 0 258.38s 2,211 13,207 22,429

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