# Muse Spark: what I've logged

> Muse Spark comes up in 3 posts of my AI log, from April 2026 to August 2026, and each item below links to the primary source. The sources come from Meta and Meta Superintelligence Labs, filed under frontier, open weights and science.

## Items

1. **Muse Spark 1.3** (Meta, 31 Aug 2026): Meta's latest Muse Spark checkpoint, tuned for multi-step agentic work and coding, with better coding than 1.2. [Primary source](https://research.meta.ai/blog/introducing-muse-spark-1-3) · [Post](https://heyaliasif.com/ai/2026-08-31-week-in-ai#item-4)
2. **Muse Spark 1.1** (Meta Superintelligence Labs, 6 Jul 2026): A July 9 upgrade focused on tool and computer use, coding and multimodal understanding, with a 1M-token context and a public preview of the Meta Model API. [Primary source](https://ai.meta.com/blog/introducing-muse-spark-meta-model-api/) · [Post](https://heyaliasif.com/ai/2026-07-06-week-in-ai#item-2)
3. **Muse Spark** (Meta Superintelligence Labs, 6 Apr 2026): The first model from Meta's new lab is natively multimodal and proprietary, with a private API preview and a Contemplating mode that runs agents in parallel. [Primary source](https://ai.meta.com/blog/introducing-muse-spark-msl/) · [Post](https://heyaliasif.com/ai/2026-04-06-week-in-ai#item-2)

## Posts

- 2026-08-31 [Claude Fable 5.1 and GPT-6 Astra both land, plus Gemini 3.8 Flash](https://heyaliasif.com/ai/2026-08-31-week-in-ai)
- 2026-07-06 [GPT-5.6 Sol, Terra and Luna, Muse Spark 1.1, Tencent Hy3](https://heyaliasif.com/ai/2026-07-06-week-in-ai)
- 2026-04-06 [Anthropic gates Mythos Preview, Meta's Muse Spark, GLM-5.1](https://heyaliasif.com/ai/2026-04-06-week-in-ai)

Canonical: https://heyaliasif.com/ai/topics/muse-spark