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Meta · API model

Muse Spark 1.3

Muse Spark 1.3 is a multimodal reasoning model from Meta for long-running agentic, multi-agent, and coding workflows. It is designed to keep track of information across extended tasks, work through...

Context
1.05M
Input / 1M
$1.25
Output / 1M
$4.25
Released
Sep 2, 2026
Specifications

Muse Spark 1.3 specs

Provider
Meta
Type
API model
Model ID
meta/muse-spark-1.3
Context window
1,048,576 tokens1.05M
Input price
$1.25per 1M input tokens
Output price
$4.25per 1M output tokens
Accepts
audio, file, image, text, video
Produces
text
Released
Sep 2, 2026
Popularity
34/100position #71 in OpenRouter's weekly usage ranking
Source
OpenRouter
Overview

About Muse Spark 1.3

Muse Spark 1.3 is an API model from Meta, released on Sep 2, 2026, with a context window of 1,048,576 tokens, pricing of $1.25 per million input tokens and $4.25 per million output tokens. It accepts audio, file, image, text, video input and produces text output.

At listed prices, a request with 10,000 input tokens and 1,000 output tokens costs about $0.017.

Specs are sourced from OpenRouter and were last checked on Nov 3, 2026. Always confirm current pricing and limits with the provider before production use.

Tool callingStructured outputsJSON modeReasoning
FAQ

Muse Spark 1.3 questions

What is the context window of Muse Spark 1.3?

Muse Spark 1.3 supports a context window of 1,048,576 tokens.

How much does Muse Spark 1.3 cost?

Muse Spark 1.3 is listed at $1.25 per million input tokens and $4.25 per million output tokens on OpenRouter.

When was Muse Spark 1.3 released?

Muse Spark 1.3 was published on Sep 2, 2026.

What inputs does Muse Spark 1.3 accept?

Muse Spark 1.3 accepts audio, file, image, text, video input and produces text output.