Meta: Muse Spark 1.3

Muse Spark 1.3 is a multimodal reasoning model from Meta for long-running agentic, multi-agent, and coding workflows.

Context
1.0M
Max output
944K
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-1.3
Provider OpenRouter
Creator Meta Llama
Family—
License—
Status—
Type—
Input modalitiestext, image, video
Output modalitiestext
Open weight—
Parameters—
Architecture—
Context window1.0M tokens
Max input—
Max output944K 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-1.3