Muse Spark
The first model from Meta Superintelligence Labs: natively multimodal, with no open weights.
Why it matters
The flag-bearer of the open Llama line entered frontier competition with a closed model for the first time.
Costs and controversy
At launch it ranked fourth on an overall intelligence index, behind Gemini 3.1 Pro, GPT-5.4 and Claude Opus 4.6.
Built on
Led to
Source: ai.meta.com ↗
Official page not opened for verification; URL taken from citations in multiple reports.