Meta Muse Spark 1.3 early coding tests impress: near-frontier quality at a third of the price

DeryaTR_ · x · 2026-09-03

Early hands-on tests of Meta's Muse Spark 1.3 for coding look strong, according to user DeryaTR, who will share examples soon. Pricing is $1.25/M input and $4/M output tokens—under a third of frontier rivals—with claimed performance beating GPT-5.6 Sol max and approaching Opus 5 max for coding. A $5/month subscription offers relatively generous prompting limits. The author uses the terminal CLI and wishes Meta shipped its own IDE.

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