Meta's Muse Spark 1.3 (max) scores 62 on Artificial Analysis Intelligence Index, top-6 of 636
ArtificialAnlys · x · 2026-09-03
Artificial Analysis has published a full evaluation page for Meta's Muse Spark 1.3 (max), a proprietary reasoning model with a 1M-token context window. It scores 62 on the Intelligence Index — well above the class median of 17 — ranking 6th among 636 models.
Notable details: the model was very verbose during evaluation (120M output tokens vs. a 72M median), and pricing currently shows $0.00 per 1M input and output tokens, with speed and cost metrics still unavailable. Full sub-evaluation breakdowns are on the Artificial Analysis Intelligence Index page.
Related event: Meta's Muse Spark 1.3 Beats Sol on Artificial Analysis Leaderboard(2 posts)→
More from Models
- GPT-6 'Astra' expected tomorrow: codename spotted in API, rumored 4x GPT-5.6 Sol — daniel_mac8 · 2026-09-03
- Greg Brockman appears to confirm o1, o3 and GPT-5 all built on the GPT-4o base model — flowersslop · 2026-09-03
- Heavy user says GPT-5.3's instruction following is OpenAI's special sauce over Claude — brandon_galang · 2026-09-03
- Early user test: Muse Spark 1.3 oneshots a full website frontend — alexandr_wang · 2026-09-03
- Researcher: Looped Transformers add no real recurrence, just tied-parameter depth — savvyRL · 2026-09-03
- Muse Spark 1.3 lands on OpenCode Zen for free, CEO urges devs to try it — alexandr_wang · 2026-09-03