Model release · Meta
Muse Spark 1.3
- Model released
Long-horizon agent + coding; vs 1.2 about 20% fewer tool calls, 25% fewer tokens; max reasoning still in safety testing; Standard $1.25/$4.25 /1M (cached in $0.15); Contributor $0.10/$0.20
Availability
Meta Model API muse-spark-1.3 (Standard); muse-spark-1.3-contributor; base https://api.meta.ai/v1; consumer Muse personal Agent open in US (iOS/Android/muse.ai, 2026-09-08)