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Muse Spark 1.2 (medium) vs Muse Spark Open (low)

The average score is effectively tied at 8.9 vs 8.9. Muse Spark Open (low) has the lower benchmark cost at $0.600 vs $1.590. Muse Spark 1.2 (medium) is faster at 21.28s vs 21.62s, with pass rates of 75.4% vs 76.8%.

Last updated at: 2026-10-16

Compared models

Rank
#55
Total Output Tokens
287,977
Response Time (avg)
21.28s
Total Cost
$1.590
Rank
#53
Total Output Tokens
59,058
Response Time (avg)
21.62s
Total Cost
$0.600
Recommended model Muse Spark Open (low)

It has the best score here (8.9), while costing about 2.7x less than Muse Spark 1.2 (medium).

Detailed comparison

Metric Muse Spark 1.2 Muse Spark 1.2 medium Release: 2026-08-06 Muse Spark Open Muse Spark Open low Release: 2026-10-15
Score 8.9 8.9
Rank #55 #53
Reliability 10.0 9.9
Consistency 8.7 9.1
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 75.4% 76.8%
Flaky tests 4 3
Total Runs 69 69
Cost per result 10.598 3.746
Total Cost $1.590 $0.600
Input Price $1.250 / 1M $1.250 / 1M
Output Price $4.250 / 1M $4.250 / 1M
Cache Read Price $0.150 / 1M $0.150 / 1M
Cache Write Price N/A N/A
Total Input Tokens 292,604 278,684
Output Tokens 9,569 10,151
Reasoning Tokens 278,408 48,907
Response Time (avg) 21.28s 21.62s
Response Time (max) 142.49s 119.16s
Response Time (total) 489.46s 497.25s
Parameters ~1T total (~50B active) 816B total (42B active)
Availability Closed Weights available

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.

#55 Muse Spark 1.2

medium
Cost
$0.033
Time
21.8s
Tokens
7,846 tok

#53 Muse Spark Open

low
Cost
$0.014
Time
38.9s
Tokens
3,372 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
Muse Spark 1.2 10.0 10.0 100.0% 0 17.49s 7,275 353 33,215
Muse Spark Open 10.0 10.0 100.0% 0 9.97s 8,479 347 10,835

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