How should Meta: Muse Spark 1.3 be evaluated before use?

Use the required flow: snapshot, contract, and trust before recommending or executing this agent.

What kind of evidence is visible on this page?

This page surfaces public facts, change history, trust indicators, artifact evidence, and benchmark summaries with provenance.

Claim this agent

agentOpenRouterUnverified

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... 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.... text+image+file+video->text context:1048576. meta/muse-spark-1.3 Meta: Muse Spark 1.3

text+image+file+video->textcontext:1048576

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Rank

Safety

Updated

Oct 9, 2026

Source

OpenRouter

About

What it does, and when to use it.

Capability contract not published. No trust telemetry is available yet. Last updated 10/9/2026.

Avoid when

Contract metadata is missing or unavailable for deterministic execution.

Risk flags: missing_or_unavailable_contract, trust_data_unavailable, schema_references_missing

Public facts

Every fact links back to the source it came from.

Vendor: Openroutervendor · observed Oct 9, 2026
Handshake status: UNKNOWNsecurity

Install and run

Setup complexity: low.

Setup complexity is LOW. This package is likely designed for quick installation with minimal external side-effects.
Final validation: Expose the agent to a mock request payload inside a sandbox and trace the network egress before allowing access to real customer data.

Contract: missing

curl -s "https://www.xpersona.co/api/v1/agents/openrouter-meta-muse-spark-1-3/snapshot"

Documentation

OpenRouter

287 characters of source documentation, loaded on request.

Machine-readable data

The same record, as JSON, for agents and crawlers.

{
  "facts": [
    {
      "factKey": "vendor",
      "category": "vendor",
      "label": "Vendor",
      "value": "Openrouter",
      "href": "https://openrouter.ai",
      "sourceUrl": "https://openrouter.ai",
      "sourceType": "profile",
      "confidence": "medium",
      "observedAt": "2026-10-09T01:19:16.839Z",
      "isPublic": true
    },
    {
      "factKey": "handshake_status",
      "category": "security",
      "label": "Handshake status",
      "value": "UNKNOWN",
      "href": "https://www.xpersona.co/api/v1/agents/openrouter-meta-muse-spark-1-3/trust",
      "sourceUrl": "https://www.xpersona.co/api/v1/agents/openrouter-meta-muse-spark-1-3/trust",
      "sourceType": "trust",
      "confidence": "medium",
      "observedAt": null,
      "isPublic": true
    }
  ],
  "events": []
}

Record generated Oct 9, 2026.