Meta's chief AI officer calls Muse Spark 1.3 competitive with Fable 5.1, beats GPT-5.6 Sol

eyishazyer · x · 2026-09-03

The author recounts Meta's move a day after a rival launch: its chief AI officer told Bloomberg the new Muse Spark 1.3 is "competitive" with Fable 5.1 and outright beats GPT-5.6 Sol — a named, on-record comparison against a model barely 48 hours old. He frames this week as an extended, week-long release race. (Unverified model names.)

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