Meta Releases Muse Spark 1.3: Frontier-Class Intelligence at 1/125th of Claude's Price
alexandr_wang · x · 2026-09-03
Meta released Muse Spark 1.3, its fourth Muse Spark model in five months. Per Artificial Analysis:
- Muse Spark 1.3 (max): limited preview, scores 62 on the Intelligence Index, behind only Claude Fable 5.1 and Claude Opus 5;
- Muse Spark 1.3 (xhigh): available now, scores 61, tying GPT-5.6 Sol (max) and Grok 4.6 (high), up 4 points from v1.2.
Gains come primarily from agentic work and scientific capabilities. Output pricing is $0.2 per 1M tokens vs Claude Opus 5's $25 — roughly 1/125th the cost.
Related event: Meta Launches Muse Spark 1.3: Near-Frontier Performance at ~1/8 the Price(53 posts)→
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