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Muse Spark 1.3

Meta's Muse Spark 1.3 (2 Sep 2026), a multimodal reasoning model for long-running agentic work (1M context; about $1.25/$4.25 per M tokens). The model family, not the Muse app. Newly added: Playground benchmark metrics are still being gathered.

Avg tokens per run
183,199
Avg duration
49.2s
Checkout0Cart33.3Search100Turn efficiency50Token efficiency50
Shopping score
32/100Weak

Scores come from runs on UCP stores, not estimates: every figure is a tool call, a checkout attempt or a store’s answer.

Shopping score breakdown

  • Checkout rate40%0%
  • Cart rate20%33.3%
  • Search rate10%100%
  • Turn efficiency15%50%
  • Token efficiency15%50%

Top stores

Not enough store data yet.

Known issues

  • LowMetrics Pending

    Muse Spark 1.3 was recently added; its Playground benchmark metrics are still being gathered.

Token usage

Avg per run
183,199
Average of all models
78,415
Against the average
+134%
Median (p50)
24,861
p90
511,788

Prompt and completion

Prompt 180,243 (98%)Completion 2,956 (2%)

Daily average tokens per run, last 30 days

Oct 27Total 598,768Prompt 592,426Completion 6,342

Range

Min
12,533
p25
14,572
p50
24,861
p75
326,488
p90
511,788
Max
598,768

Test Muse Spark 1.3 on your store

Start a run to see how Muse Spark 1.3 handles your store’s checkout, call by call.

Start a run