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#61

Muse Spark 1.2

Meta Release: 2026-08-06 Tested on: 2026-10-01 03:05 meta/muse-spark-1.2::medium
~1T total (~50B active)MoEClosedEstimated
(high) (medium) (low)

Summary

Muse Spark 1.2 scores 8.9 on AI BENCHY and ranks #61. It has 10.0 reliability, a 75.4% pass rate, $1.590 total cost, and 21.28s average response time.

What makes Muse Spark 1.2 unique: It stands out most in Domain specific, where it ranks #4, while Anti-AI Tricks is its weakest area at #15.

Model facts

Researched on 2026-08-12

Estimated
Parameters
~1T total (~50B active)
Architecture
MoE
Availability
Closed
License
-

Best estimate from public evidence; the vendor did not disclose every value. API-only exact checkpoint; promised weights were not public at research time.

Parameter source Availability source

Score

8.9

Consistency

8.7

Reliability

10.0

Total Cost (Current Price)

$1.590

Total Output Tokens

287,977

Total Input Tokens

292,604

Input Price

$1.250 / 1M

Output Price

$4.250 / 1M

Cache Read Price

$0.150 / 1M

Cache Write Price

N/A

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

Tests Correct

Wrong Tests: 8

Attempt pass rate: 75.4%

Flaky tests

4

Flaky tests had mixed outcomes across runs (at least one pass and one fail).

Response Time (avg)

21.28s

Response Time (max): 142.49s

Response Time (total): 489.46s

Did not follow instructions: 3 Wrong answer: 3 Extra formatting: 1 Invalid tool call: 1

Hamster playing table tennis

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

#61 Muse Spark 1.2

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

Run history

Tested on Score Reliability Tests Correct Total Cost Compare
2026-10-01 03:05 Re-test 8.9 10.0 $1.590 Current run
2026-08-05 23:32 Initial run 8.6 9.9 $1.227 Compare

This run used a different benchmark suite. Keep suite changes in mind when reading historical movement.

Price History

Historical pricing data for this model from OpenRouter.

Date Input Price Output Price Cache Read Price Cache Write Price
2026-08-14 12:51 $1.250 / 1M $4.250 / 1M N/A N/A
2026-10-01 18:33 $1.250 / 1M $4.250 / 1M $0.150 / 1M N/A

Charts

Choose the first model, then click a second model to open a side-by-side page.

Total Output Tokens

Score vs Total Output Tokens

Quick Compare

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Category Breakdown

Category Score Consistency Tests Correct
Agentic 10.0 10.0
Anti-AI Tricks 7.3 6.2
Coding 10.0 10.0
Combined 8.5 10.0
Data parsing and extraction 10.0 10.0
Domain specific 5.3 10.0
General Intelligence 6.1 3.1
Instructions following 9.8 10.0
Puzzle Solving 8.7 7.7
Tool Calling 10.0 10.0
Trivia 3.0 10.0

Compared models