Muse Spark 1.3

'Max' effort tier added; Contributor tier at $0.10/$0.20 lets Meta train on your data.

Released

Sep 2, 2026

Price in / out

$1.25 / $4.25

Blended $/1M

Context

1.05M

Benchmark scoresvs Muse Spark 1.2

Benchmark	Score	Δ vs prior	Rank (current)	Configuration	Source
Terminal-Bench 2.1	79%	+9.3	#7 of 20	max · leaderboard	benchlm.ai ↗

Muse versions

Timeline

Version	Released	$ in / out	Terminal-Bench	SWE-bench	GPQA	HLE	ARC-AGI-2	AIME
Muse SparkSuperseded	2026-04-08	—	—	77.4%	89.5%	50.4%	42.5%	—
Muse Spark 1.1Superseded	2026-07-09	$1.25 / $4.25	69.3%	—	—	62.1%	—	—
Muse Spark 1.2Superseded	2026-08-05	$1.25 / $4.25	69.7%	—	—	—	—	—
Muse Glimmer 30B	2026-08-09	—	—	76%	83.5%	—	—	94.7%
Muse Spark 1.3	2026-09-02	$1.25 / $4.25	79%	—	—	—	—	—

Compare

Open the Comparison Lab with Muse Spark 1.3 and its closed-weight peers pre-selected, then toggle any benchmark or model.

Every Muse version over time

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Current closed-weight peers

All

Claude Sonnet 5.5$2 in Claude Opus 5.5$4 in Claude Fable 5.1$10 in GPT-6 Luna$0.1 in GPT-6 Astra$10 in Gemini 3.8 Flash$0.75 in