# Muse Spark Open release date

entity: /record/muse-spark-open.md  
predicate: model_release  
page: /record/muse-spark-open/model_release  
as_of: 2026-11-04  

As of November 4, 2026, the AsOf record says Muse Spark Open was released on October 15, 2026, from a primary source (research.meta.ai). The record holds 1 claim on Muse Spark Open's release, 1 still open and 0 superseded, each dated and sourced; a replaced value is closed with an end date, never deleted.

## Current release date

What the record asserts on 2026-11-04.

- [Muse Spark Open](/record/muse-spark-open.md) | model_release | Muse Spark Open | valid 2026-10-15 to present | conf 0.95 | valid | [clm_D58FC12544C0](/claim/clm_D58FC12544C0.md)
  sources: https://research.meta.ai/blog/muse-spark-open

## Every dated value

One claim per line, oldest first. Superseded claims stay visible.

- [Muse Spark Open](/record/muse-spark-open.md) | model_release | Muse Spark Open | valid 2026-10-15 to present | conf 0.95 | valid | [clm_D58FC12544C0](/claim/clm_D58FC12544C0.md)
  sources: https://research.meta.ai/blog/muse-spark-open

## Questions this record answers

### When was Muse Spark Open released?

On October 15, 2026, from a primary source (research.meta.ai) (status valid, confidence 0.95).


## Get this data

- JSON: /v1/entities/muse-spark-open/model_release (this fact) · /v1/entities/muse-spark-open?predicates=model_release (with the entity's coverage; add as_of=YYYY-MM-DD for a date)
- MCP: timeline(entity: "muse-spark-open", predicates: ["model_release"]) for every dated value · fetch(id: "/record/muse-spark-open/model_release.md") for this page
- Entity twin: /record/muse-spark-open.md · timeline: /timelines/muse-spark-open.md

---

AsOf is a temporal fact ledger: a structured, dated, sourced record of what is true and what changed, built for AI retrieval.