April 8, 2026•12 min read
Meta Muse Spark: First Look at MSL's New Reasoning Model (2026)
Meta shipped Muse Spark, their first frontier model since Llama 4, their first closed model ever, and the first real output from Meta Superintelligence Labs. Here's what's real, what's missing, and how it stacks up against Claude Mythos Preview.
Dmytro ChabanMeta Muse SparkClaude MythosLLM Comparison