Meta AI · Shipped
Muse Spark 1.3 release date
Specs, benchmarks and changelog are on the Muse Spark 1.3 model card at TPS.
Released
Sep 2, 2026
What we know
Powers Meta's personal AI agent Muse; available free for up to 100M tokens per week with paid tiers at $20 and $100 monthly.
Spec
- Params
- Not stated
- Active
- Not stated
- Context
- 1048576
- Weights
- Closed
- Modality
- Not stated
- Codename
- Not stated
Every claim
5 from 2 sources- TechmemePressSep 8
Meta's Muse Spark 1.3 model powers the Muse personal AI agent, available in free and paid tiers.
- TechmemeSpotted in the wildSep 4
Muse Spark 1.3 scored 67 on Artificial Analysis Coding Agent Index, equal to GPT-6 Astra and Claude Opus 5.
- The DecoderSpotted in the wildSep 3
Meta has released Muse Spark 1.3, the fourth model in the series in five months.
- TechmemePressSep 2
Muse Spark 1.3 with max reasoning released in limited preview for Meta partners, scoring 62 on Artificial Analysis Intelligence Index.
- TechmemeFrom the labSep 2
Meta released Muse Spark 1.3 with improved coding and agentic performance at the same price as Spark 1.2.