Meta Superintelligence Labs debuts Muse Spark, its first model
On 2026-04-08 Meta Superintelligence Labs (led by Alexandr Wang) released Muse Spark (code-named Avocado), the first model of the new Muse series and the result of a nine-month ground-up rebuild of Meta's AI stack. It replaced Llama as the engine of the Meta AI assistant and was not released as open weights.
Key facts
- Announced 2026-04-08; first model from Meta Superintelligence Labs; code-named Avocado
- Described as small and fast by design, reasoning in science, math and health; supports parallel subagents
- Powers the Meta AI app and meta.ai at launch; rolling out to WhatsApp, Instagram, Facebook, Messenger and AI glasses
- Private-preview API access for select partners
- Not open weights; Meta said it hopes to open-source future versions
- No numeric benchmarks published in the official post
- Followed by Muse Image and Muse Video, Muse Spark 1.1 (July), 1.2 (Aug) and open-weight Muse Glimmer (Aug)
What happened
Meta released Muse Spark, the first model built by Meta Superintelligence Labs (MSL), the unit formed in 2025 after Meta's roughly $14B deal with Scale AI that brought in Alexandr Wang. Meta says MSL rebuilt its AI stack from the ground up in nine months. Muse Spark powers Meta AI with reasoning, visual understanding, health Q&A developed with physician input, visual coding (websites, mini-games) and parallel subagents.
Why it matters
It marked Meta's break from the Llama brand and from default open-weights releases for its frontier model, and was the first test of whether Meta's enormous 2025-26 talent and capex spending could produce a competitive model.
Changelog
- 2026-09-29: created
Related events
- Meta releases Muse Spark 1.1 and opens the Meta Model API public preview ★★★
- Meta launches Muse, a free consumer personal AI agent ★★★★
- Meta Q2 2026 - capex guidance $130-145B, free cash flow collapses 91% on AI buildout ★★★
- Meta returns to open weights with Muse Glimmer, a 30B Apache-2.0 agentic model ★★★★
Sources (3)
- officialMeta - Introducing Muse Spark
- pressTechCrunch - Meta debuts the Muse Spark model in a ground-up overhaul of its AI
- pressCNBC - Meta debuts first major AI model since $14 billion deal to bring in Alexandr Wang
id: 2026-04-08-meta-muse-spark · updated 2026-09-29 · open in the interactive timeline