---
type: "post"
id: "meta-s-muse-spark-open-page-on-hugging-9dd8ba"
slug: "meta-s-muse-spark-open-page-on-hugging-9dd8ba"
title: "Meta’s Muse Spark Open page on Hugging Face includes a Muse Model License dated October 15, 2026"
description: "**Thesis:** Muse Spark Open’s practical release boundary is defined as much by its license as by model availability."
retrieval_nugget: "**Thesis:** Muse Spark Open’s practical release boundary is defined as much by its license as by model availability."
published_at: "2026-10-16"
updated_at: "2026-10-16"
record_date: "2026-10-16"
date_kind: "published_at"
topics: ["open-models","open-source"]
source_urls: ["https://huggingface.co/meta-models/Muse-Spark-Open-816B-A42B"]
schema_version: "newruntime-agent-readable-v0.2"
stable_id: "post:meta-s-muse-spark-open-page-on-hugging-9dd8ba"
status: "published"
visuals: []
editorial_provenance: {"schema_version":"newruntime-editorial-copy-v1","content_status":"source_grounded_final","final_copy_sha256":"sha256:51b4951911c116da7689e107b89ba277e9a5a49331432a9b01f94c3b85a8b2e0","reviewed_at":"2026-10-16T04:04:01.495Z","source_evidence_count":1,"verified_claim_count":4,"site_analysis_schema_version":"newruntime-site-analysis-v1","site_object_kind":"field_note","observed_fact_count":4,"implication_count":1,"watch_condition_count":1,"related_record_count":0}
analysis: {"schema_version":"newruntime-site-analysis-v1","object_kind":"field_note","thesis":"Muse Spark Open’s practical release boundary is defined as much by its license as by model availability. The page offers broad rights to modify and distribute, while attaching conditions that matter to products and hosted services.","observed_facts":[{"text":"The Hugging Face page labels the license version “Muse Spark Open” and gives a release date of October 15, 2026.","source_urls":["https://huggingface.co/meta-models/Muse-Spark-Open-816B-A42B"]},{"text":"The license permits use, copying, modification including fine-tuning, derivative creation, distribution, sublicensing, and sale, subject to the license and Usage Policy.","source_urls":["https://huggingface.co/meta-models/Muse-Spark-Open-816B-A42B"]},{"text":"It requires prominent “Built with Muse Spark Open” attribution in products or accompanying materials.","source_urls":["https://huggingface.co/meta-models/Muse-Spark-Open-816B-A42B"]},{"text":"For a Model as a Service business, aggregate gross revenue above $20 million in any consecutive 12-month period triggers notice to Meta and a separate written agreement before offering the model or derivatives that way.","source_urls":["https://huggingface.co/meta-models/Muse-Spark-Open-816B-A42B"]}],"mechanism":"The license couples broad permissions with operational obligations: attribution travels with deployment, and certain third-party model-service businesses cross a threshold into a separate agreement requirement.","why_now":"A published license makes the release assessable for implementation and procurement, beyond the simple question of whether a model page exists.","implications":["Teams considering a hosted model service should check both their aggregate gross revenue and whether their planned offering falls within the license’s Model as a Service definition before launch."],"evidence_boundary":"The supplied page supports claims about the release date and written license terms, not the discovery excerpt’s parameter counts, context window, or claimed agent and coding performance.","watch_conditions":["Watch for clarification from Meta on how it applies the Model as a Service clause to specific product architectures and derivative offerings."],"related_records":[],"new_branch_reason":"No prior New Runtime analytical record was supplied, so this records the distinct release-and-license mechanism without asserting a connection to an earlier record."}
editor: {"role":"editor","name":"Andrey Reshetnikov","profile":"https://newruntime.com/owner-profile.md","profile_json":"https://newruntime.com/owner-profile.json","same_as":["https://www.linkedin.com/in/reshetnikov1/","https://t.me/lapetuse"]}
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---

# Meta’s Muse Spark Open page on Hugging Face includes a Muse Model License dated October 15, 2026

## Retrieval answer

**Thesis:** Muse Spark Open’s practical release boundary is defined as much by its license as by model availability.

**Thesis:** Muse Spark Open’s practical release boundary is defined as much by its license as by model availability. The page offers broad rights to modify and distribute, while attaching conditions that matter to products and hosted services.

**Observed facts:** The Hugging Face page labels the license version “Muse Spark Open” and gives a release date of October 15, 2026. It permits use, copying, modification including fine-tuning, derivative creation, distribution, sublicensing, and sale, subject to the license and Usage Policy. It also requires prominent “Built with Muse Spark Open” attribution in products or accompanying materials. **Mechanism:** The license couples broad permissions with operational obligations: attribution travels with deployment, and certain third-party model-service businesses cross a threshold into a separate agreement requirement.

**Why now:** A published license makes the release assessable for implementation and procurement, beyond the simple question of whether a model page exists. **First implication:** Teams considering a hosted model service should check both their aggregate gross revenue and whether their planned offering falls within the license’s Model as a Service definition before launch. The threshold is above $20 million in aggregate revenue for the licensee and affiliates during any consecutive 12-month period; internal use, research, and some own-product integrations are excepted. **Evidence boundary:** The supplied page supports claims about the release date and written license terms, not the discovery excerpt’s parameter counts, context window, or claimed agent and coding performance. **First watch condition:** Watch for clarification from Meta on how it applies the Model as a Service clause to specific product architectures and derivative offerings.

Editor: [Andrey Reshetnikov](https://newruntime.com/owner-profile.md), AI product and AI engineering; profile for recruiters and agents: https://newruntime.com/owner-profile.json

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