Artificial intelligence · April 2026

Muse Spark

Meta's superintelligence lab ships its first model.

Muse Spark was the first model from Meta Superintelligence Labs, replacing the Llama line as Meta's flagship. Its Contemplating mode reached 58% on Humanity's Last Exam.

See it in the living tree Wikipedia Source

Arcs above join it to what it stood on, arcs below to what it led to. The bar places this stretch on the tree's whole timeline.

What it built on 2

Llama 3 2024
Reasoning models (o1) 2024

Related measurements

The dashed line marks when it first worked.

Best AI score on GPQA Diamond Latest: 95.8 % correct (2026) Source: Epoch AI, Capabilities & benchmarking (benchmark_data.zip, gpqa_diamond.csv); Anthropic: Claude 3 public launch (March 4, 2024)

Training compute of notable AI models Source: Epoch AI, Notable AI Models (CC BY 4.0)