# Muse Spark

> Meta's first model after the Alexandr Wang reshuffle — multimodal reasoning that matches Llama 4 Maverick with an order of magnitude less compute.

- Org: Meta Superintelligence Labs
- Date: 2026-04-08
- Category: model
- Source: https://ai.meta.com/blog/introducing-muse-spark-msl/
- Canonical page: https://ai-tldr.dev/releases/meta-muse-spark/

## In short

First model from Meta Superintelligence Labs since the Alexandr Wang reshuffle — a natively multimodal reasoning model Meta claims matches Llama 4 Maverick with an order of magnitude less compute.

## What it is

Muse Spark is the first release from Meta Superintelligence Labs, the AI org Meta rebuilt around Alexandr Wang after the $14B Scale AI deal. It is a natively multimodal reasoning model with visual chain-of-thought and multi-agent orchestration, pitched as the model that will power consumer-facing AI inside Facebook, Instagram, WhatsApp, Messenger and the Ray-Ban Meta glasses. Unlike Llama, Muse Spark is closed-weights, accessed through meta.ai and an invite-only API.

## How it works

Meta ships Muse Spark in two modes in meta.ai — Instant and Thinking — with a longer-reasoning Contemplating mode promised later. In Contemplating mode Meta reports 58% on Humanity's Last Exam and 38% on FrontierScience Research. The headline is efficiency: Meta says a rebuilt training stack lets Muse Spark match Llama 4 Maverick's capabilities with over an order of magnitude less training compute. Artificial Analysis independently scores it at 52, behind only Gemini 3.1 Pro, GPT-5.4 and Claude Opus 4.6.

## Why it matters

This is the first concrete proof that Meta's expensive bet on Wang and MSL is producing real models, not slides. The story is not the raw benchmarks — it is the efficiency. If MSL can keep delivering frontier-comparable models at 10x lower compute, Meta can ship them on phones and AR glasses at a cost no competitor can match.

## Who it's for

Anyone watching the consumer-AI race or building edge / on-device experiences.

## Try it

meta.ai (US only at launch)

## Links

- [Announcement](https://ai.meta.com/blog/introducing-muse-spark-msl/)
- [Newsroom](https://about.fb.com/news/2026/04/introducing-muse-spark-meta-superintelligence-labs-first-model-built-to-prioritize-people/)
- [Analysis](https://simonwillison.net/2026/Apr/8/muse-spark/)