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Claude Opus 5.5 (medium) vs Muse Ember (high)

The average score is effectively tied at 9.2 vs 9.2. Muse Ember (high) has the lower benchmark cost at $0.156 vs $1.804. Muse Ember (high) is faster at 11.67s vs 25.85s, with pass rates of 89.9% vs 79.7%.

Last updated at: 2026-11-10

Compared models

Rank
#38
Total Output Tokens
32,127
Response Time (avg)
25.85s
Total Cost
$1.804
Rank
#36
Total Output Tokens
254,892
Response Time (avg)
11.67s
Total Cost
$0.156
Recommended model Muse Ember (high)

It has the best score here (9.2), while costing about 11.6x less than Claude Opus 5.5 (medium).

Detailed comparison

Metric Claude Opus 5.5 Claude Opus 5.5 medium Release: 2026-09-23 Muse Ember Muse Ember high Release: 2026-11-09
Score 9.2 9.2
Rank #38 #36
Reliability 10.0 10.0
Consistency 9.7 9.6
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 89.9% 79.7%
Flaky tests 1 1
Total Runs 69 69
Cost per result 9.016 0.865
Total Cost $1.804 $0.156
Input Price $4.000 / 1M $0.100 / 1M
Output Price $20.000 / 1M $0.500 / 1M
Cache Read Price $0.200 / 1M $0.004 / 1M
Cache Write Price $5.000 / 1M $0.125 / 1M
Total Input Tokens 290,117 282,192
Output Tokens 9,805 14,054
Reasoning Tokens 22,322 240,838
Response Time (avg) 25.85s 11.67s
Response Time (max) 90.20s 53.01s
Response Time (total) 594.63s 268.45s
Parameters ~5T total (~500B active) ~150B total (~10B 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.

#38 Claude Opus 5.5

medium
Cost
$0.053
Time
25.6s
Tokens
2,781 tok

#36 Muse Ember

high
Cost
$0.005
Time
18.3s
Tokens
9,965 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
Claude Opus 5.5 8.4 7.4 88.9% 1 13.50s 10,608 636 4,341
Muse Ember 10.0 10.0 100.0% 0 9.62s 7,410 1,213 34,691

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