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Meta: Muse Spark Open

meta/muse-spark-open

canonical: meta/muse-spark-open-20261015

Audio inside a video clip

Cannot hear clip audioprobed 2026-10-22

Probed: missed a spoken codeword inside the clip although it accepts standalone audio — its video path drops the track. Any comment it makes on sound is invented.

What it answered

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NONE

Descriptionfrom OpenRouter

Muse Spark Open is a coding-optimized open-weight model. Trained specifically for agentic coding workflows, it delivers higher first-attempt accuracy, reliable tool calling, and deep codebase understanding across the repos developers...

Context length

1,048,576 tok

Max completion

262,144 tok

Knowledge cutoff

—

Expires

—

Added to OpenRouter

10/15/2026

Cache last refreshed

11/12/2026

Primary modality

text+image+file+audio+video->text

Source

OpenRouter

Input modalities

textimagevideofileaudio

Output modalities

text

Pricing

Field	Per token (USD)	Per million
prompt	0.00000125	$1.25
completion	0.00000425	$4.25
input_cache_read	0.00000015	$0.150

Supported parameters(20)

frequency_penaltyinclude_reasoninglogit_biaslogprobsmax_tokensmin_ppresence_penaltyreasoningreasoning_effortrepetition_penaltyresponse_formatseedstopstructured_outputstemperaturetool_choicetoolstop_ktop_logprobstop_p

OpenRouter page Hugging Face

Videos

47:51

Ranking major U.S. Open-Weights Models. (Where does Ripple 65B fit in?)

Nov 6, 2026 · YouTube

16:04

Testing a *massive* new open-weights model 🤯: Muse Spark Open (vs. Nemotron, Opus 5.5, and more)

Oct 15, 2026 · YouTube

Rounds

17 answersin this database. A round opens every model's answer to the same prompt.

Nov 6, 2026Small ModelsAWS Quick Ten100excellentin a video round answer
Nov 6, 2026Small ModelsRust Quick Ten97excellentin a video round answer
Nov 6, 2026Small ModelsTailwind Quick Ten100excellentin a video round answer
Nov 6, 2026Small ModelsPython Quick Ten100excellentin a video round answer
Oct 18, 2026Model FingerprintsPick Ten Random Thingsin a video round answer
Oct 18, 2026Model FingerprintsName Ten Story Charactersin a video round answer
Oct 18, 2026Model FingerprintsTen Canvas Animation Ideasin a video round answer
Oct 17, 2026Vision & PerceptionSeconds Until Out of Framein a video round answer
Oct 17, 2026Vision & PerceptionCount the Park Catsin a video round answer
Oct 15, 2026CodingDrop the slinky85very goodin a video round answer
Oct 15, 2026CodingNeon Unicorn Frappuccino85very goodin a video round answer
Oct 15, 2026CodingTwo kilobytes95excellentin a video round answer
Oct 15, 2026CodingBird Breakdance Animation70goodin a video round answer
Oct 15, 2026CodingThe Cybertruck rally95excellentin a video round answer
Oct 15, 2026CodingUmbrella In High Wind70goodin a video round answer
Oct 15, 2026CodingEscalator Reversal Disaster30badin a video round answer
Oct 15, 2026CodingSpinning cat meme85very goodin a video round answer