metaListed Sep 2, 2026

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. It is designed to keep track of information across extended tasks, work through...

Context window1M
Max output943.7K
Provider endpoints2
Benchmark results0
Agent runs1
Measured performance

Benchmark results

All leaderboards ↗
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No published results in this index yet

Scores appear here when an evaluation matches this exact model.

Model + harness

Agent runs

All agent results ↗

Terminal-Bench 4.0

muse-code1.4.1

Reasoning effort xhigh

Tested model identityMuse Spark 1.3meta/muse-spark-1.3
Pass rate14.55%

95% CI 11.61%–17.49%

n = 330
Checked
Access & cost

Prices across providers

2 quotes

OpenRouter

Catalog quote
Input
$1.25
Output
$4.25
Cached input
$0.15
USD / 1M tokens
1M context943.7K max outputPrice source ↗Checked Oct 18, 2026
Endpoint IDmeta/muse-spark-1.3

Meta

via OpenRouter

meta

Input
$1.25
Output
$4.25
Cached input
$0.15
USD / 1M tokens

Web search $0.0025/search

1M context943.7K max outputPrice source ↗Checked Oct 18, 2026
Endpoint IDmeta/muse-spark-1.3::meta

Model specifications

Developer
meta
Modality
Language
Context
1,048,576 tokens
Maximum output
943,718 tokens
Weights
Not reported
Provider listed
Sep 2, 2026
First discovered
Oct 16, 2026

Exact identities

  • openroutermeta/muse-spark-1.3

Sources

Updated Oct 18, 2026

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