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Muse Spark

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Muse Spark
DeveloperMeta
ReleaseJuly 9, 2026 (2026-07-09)
Stable release
Muse Spark 1.2 / August 5, 2026 (2026-08-05)
TypeLarge language model
LicenseProprietary - Spark
Apache 2.0 - Glimmer
Websiteai.meta.com

Muse Spark is a large language model (LLM) developed by Meta through its Meta Superintelligence Labs (MSL). It was introduced in April 2026 and launched as Muse Spark 1.1 on July 9, 2026. It is the first model in Meta's Muse family and is designed for multimodal reasoning, coding, and AI-assisted software development. It also powers Meta AI across Meta's products and services. It can handle a million tokens of context.[1][2][3]

Mark Zuckerberg has stated that Meta will release Muse Spark 1.2 as an open-weight model.[4] Meta released a smaller open-weight large language model, Muse Glimmer, on August 10, 2026.

Muse Code

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Meta released Muse Code, a terminal-based coding agent, alongside Muse Spark 1.2 on August 5, 2026. Powered by the model, it can write and debug code, complete longer software development tasks, and run multiple sub-agents concurrently.[5] Muse Spark 1.2 was also made available through the Meta Model API and OpenRouter.[6][7] A lower-priced contributor tier allows Meta to retain submitted data to improve its products, while data submitted through the higher-priced standard tier is not retained for that purpose.[8]

Muse Glimmer

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Muse Glimmer is an open-weight multimodal large language model developed by Meta released on August 10, 2026. The 30-billion-parameter causal language mode combines a large language model with a dedicated perception encoder and supports both natural language and visual inputs. It was designed for local agentic and coding workloads, and can be run entirely offline on a single 24 GB consumer GPU.[9] The model weights are distributed under the Apache License 2.0.[10][11][12]

See also

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References

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  1. ↑ "Meta's Muse Spark 1.1 outperforms GLM-5.2 in coding and costs slightly less". The Decoder. July 9, 2026. Retrieved July 11, 2026.
  2. ↑ "Meta enters the crowded AI coding battle with Muse Spark 1.1". TechCrunch. July 9, 2026. Retrieved July 11, 2026.
  3. ↑ "What Is Meta's AI Muse Spark and Can It Overthrow Claude and ChatGPT?". Yahoo Finance. July 10, 2026. Retrieved July 11, 2026.
  4. ↑ Kharpal, Arjun (August 10, 2026). "Meta to open source its most powerful AI model as it takes swipe at OpenAI, Anthropic". CNBC. Retrieved August 10, 2026.
  5. ↑ "Meta launches new AI coding tool powered by Muse Spark 1.2". Reuters. August 5, 2026. Retrieved August 5, 2026.
  6. ↑ "Meet Muse Spark 1.2 and Muse Code". Meta for Developers. Meta Platforms. August 5, 2026. Retrieved August 5, 2026.
  7. ↑ "Meta API and Models". OpenRouter. Retrieved August 5, 2026.
  8. ↑ "Meta to take on Anthropic's Claude and OpenAI's Codex with new coding agent". Business Insider. August 5, 2026. Retrieved August 5, 2026.
  9. ↑ Crabtree, Matt (August 11, 2026). "Muse Glimmer: Meta's Open Agentic Model That Runs on Your Device". DataCamp. Retrieved August 13, 2026.
  10. ↑ "meta-models/Muse-Glimmer-30B". Hugging Face. Meta. Retrieved August 10, 2026.
  11. ↑ "Introducing Muse Glimmer: An Open Agentic Model That Runs on Your Device". Meta AI Research. Meta. August 10, 2026. Retrieved August 10, 2026.
  12. ↑ Dent, Steve (August 10, 2026). "Meta's 'open source' Muse Glimmer model can run on a single computer". Engadget. Retrieved August 10, 2026.
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