The newest Muse Spark model is Muse Spark 1.3, released on September 2, 2026. It has been 52 days since then, longer than the line's usual gap of 28 days.
How long it has been since the last release against the line's usual gap and its recent ones — the rhythm, not a date.
Latest: Muse Spark 1.3 · Sep 2, 2026
Every Monday, only when something shipped: the AI models that came out, what each one changed, and which lines are due next.
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Newest first — what each version changed versus the one before, in Meta's own numbers.
Five points up on the all-round intelligence index over Muse Spark 1.2 and higher scores on office and terminal tasks, at the same price and the same 1M-token context.
Compared with Muse Spark 1.2 · the model it replaces
Scores 5 points higher on the all-round intelligence index
Artificial Analysis Intelligence Index v4.3.2 — one score averaging 10 hard tests
45
▲ xhigh setting · up from 40 · +5 points
Does better on realistic office work
GDPval-AA v2 — real knowledge-work tasks, scored as an Elo rating
1709
▲ up from 1615 · +94 Elo
Same price as Muse Spark 1.2
Price per 1M tokens — what developers pay, input / output
$1.25 / $4.25
unchanged from Muse Spark 1.2
A coding-focused update to Muse Spark, released with Meta's Muse Code agent at the same $1.25 / $4.25 price, plus a cheaper contributor tier ($0.10 / $0.20 per million tokens) in which Meta may train on your prompts and completions.
Compared with Muse Spark 1.1 · the model it replaces
Scores 6 points higher on the all-round intelligence index
Artificial Analysis Intelligence Index v4.3.2 — one score averaging 10 hard tests
40
▲ up from 34 · +6 points
Same price as Muse Spark 1.1
Price per 1M tokens — what developers pay, input / output
$1.25 / $4.25
unchanged from Muse Spark 1.1