Muse

Meta · flagship line

4 releases since 2026Latest: Muse Spark 1.3

Where the line stands

How long it has been since the last release against the line's usual gap and its recent ones — the rhythm, not a date.

Muse Spark 1.3

Meta · Muse line · flagship
Just releasedreleased 7 days ago — usual gap is ~28

Meta's flagship edges closer to the leaders: four points up on the all-round score and clear gains on office and terminal tasks, at the same price and the same 1M-token context.

Released Sep 2, 2026 · what changed →
Days since last release
Muse Spark 1.3 · Sep 2, 2026
7
days
Usual gap
28
days
Recent gaps
Muse Spark 1.3 · Sep 2026
28
Muse Spark 1.2 · Aug 2026
27
Muse Spark 1.1 · Jul 2026
92

Every Muse release

Newest first — what each version changed versus the one before, in Meta's own numbers.

Sep
2

Meta's flagship edges closer to the leaders: four points up on the all-round score and clear gains 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

Four points higher on the all-round intelligence score

Artificial Analysis Intelligence Index — a broad average across many tests

61

up from 57 · +4 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

Aug
5

Introduced a contributor tier at $0.10 per million input tokens and $0.20 per million output tokens in exchange for permission to train on the user's prompts and completions.

Sources: OpenRouter
Jul
9

Opened the Meta Model API to outside developers in public preview, priced at $1.25 per million input tokens and $4.25 per million output tokens.

Sources: Meta AI · Axios

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