Meta: Muse Spark Open

Muse Spark Open is a coding-optimized open-weight model.

Context
1.0M
Max output
131K
Input price
$1.25/1M tokens
Output price
$4.25/1M tokens

Capabilities

Reasoning & Interaction
Reasoning
Tool Calling
Output Control
Structured Output
JSON Mode

Details

Model IDmeta/muse-spark-open
Provider OpenRouter
Creator Meta Llama
Family—
License—
Status—
Type—
Input modalitiestext, image, video, audio
Output modalitiestext
Open weight—
Parameters—
Architecture—
Context window1.0M tokens
Max input—
Max output131K tokens
Reasoning tokens—
Knowledge cutoff—
Release date
Sourceofficial

Tools

Function Callingfunction_calling
Call external functions and APIs

Pricing

Input
$1.25
Output
$4.25
Cache write
—
Cache read
$0.15
Batch in
—
Batch out
—

API

GET/v1/models/openrouter/meta/muse-spark-open

Meta: Muse Spark Open

meta/muse-spark-open

Muse Spark Open is a coding-optimized open-weight model.

Changes · 3 entries
meta/muse-spark-opencreateca7a400Nov 2, 2026, 03:02 AM
meta/muse-spark-openupdateb2f45bfOct 29, 2026, 03:29 AM
max_output_tokens943718→131072
meta/muse-spark-opencreatebcf2693Oct 16, 2026, 06:36 AM