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Ember-1 (low) vs Step 5 Preview (high)

The average score is effectively tied at 7.0 vs 7.0. Ember-1 (low) has the lower benchmark cost at $1.488 vs $4.513. Ember-1 (low) is faster at 34.90s vs 154.41s, with pass rates of 65.2% vs 52.2%.

Last updated at: 2026-10-09

Compared models

Rank
#168
Total Output Tokens
56,766
Response Time (avg)
34.90s
Total Cost
$1.488
Rank
#169
Total Output Tokens
1,581,325
Response Time (avg)
154.41s
Total Cost
$4.513
Recommended model Ember-1 (low)

It has the best score here (7.0), while costing about 3.0x less than Step 5 Preview (high).

Detailed comparison

Metric Ember-1 Ember-1 low Release: 2026-09-28 Step 5 Preview Step 5 Preview high Release: 2026-10-09
Score 7.0 7.0
Rank #168 #169
Reliability 8.8 9.5
Consistency 8.2 8.5
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 65.2% 52.2%
Flaky tests 5 4
Total Runs 69 69
Cost per result 11.441 45.130
Total Cost $1.488 $4.513
Input Price $3.000 / 1M $1.000 / 1M
Output Price $15.000 / 1M $2.700 / 1M
Cache Read Price $0.300 / 1M $0.050 / 1M
Cache Write Price N/A N/A
Total Input Tokens 211,908 243,381
Output Tokens 14,158 1,581,325
Reasoning Tokens 42,608 0
Response Time (avg) 34.90s 154.41s
Response Time (max) 121.29s 455.72s
Response Time (total) 802.79s 3551.40s
Parameters ~2.8T total (~104B active) 600B total (27B active)
Availability Closed Closed

Cache prices apply to input tokens. Reads reuse cached prompts; writes store them and can cost extra. Output tokens use the output price.

Model generation showcase

Hamster playing table tennis

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

#168 Ember-1

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

#169 Step 5 Preview

high
Cost
$0.057
Time
150.1s
Tokens
20,970 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
Step 5 Preview 2.9 10.0 0.0% 0 421.68s 7,383 576,000 0

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