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Muse Spark 1.2

MetaProprietaryReasoningVerifiedReleased Aug 5, 2026Input: text, image, video, file
Compare with Muse Spark 1.1Source scores ↗OpenRouter ↗
Overall score
65.9
Rank 34 of 222 · 59.8–72.0
Context window
1M
1,000,000 tokens
Price per 1M tokens
$1.25 in · $4.25 out
Source: BenchLM
Blended price
$2.00
3:1 input:output tokens
Output speed
—
Not measured yet

Category scores

Scores per capability area with the model's rank among ranked models in that category.

  1. 1Reasoning79.3
  2. 2Agentic & tool use#2675.6
  3. 3Knowledge#3572.2
  4. 4Coding#4062.9
Higher is better. #N is the model's rank in that category, where it is eligible to be ranked.

Benchmark results (6)

As reported in system cards, papers and public evaluations. Position compares this model with every other model reporting the same benchmark.

Coding

DeepSWE59.3#37 of 50
FrontierSWE v212.0#19 of 20
VulcanBench v387.0#4 of 14

Agentic & tool use

Terminal-Bench 2.182.9#23 of 68
MazeBench0#20 of 42

Multimodal

Design Arena Website1313#10 of 91

Pricing by source

USD per 1M tokens.

SourceInputOutputCached in
List price (BenchLM)$1.25$4.25$0.15
OpenRouter meta/muse-spark-1.2$1.25$4.25$0.15

Meta Model API lists muse-spark-1.2 at $1.25 input, $0.15 cached input, and $4.25 output per million tokens. Meta separately lists muse-spark-1.2-contributor, whose data may be used to improve Meta products, at $0.10 input, $0.002 cached input, and $0.20 output per million tokens; BenchLM stores the standard non-contributor SKU as the headline rate.

Arena ratings

Human-preference ratings from LMArena. Best-rated variant shown.

Text(xHigh)1484#15 · 8.2K votes
WebDev (coding)(xHigh)1534#51 · 2.2K votes
Vision(xHigh)1304#17 · 1.9K votes

Speed

Measured by us through OpenRouter (median of trials).

Not measured yet.

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