Muse Spark 1.3
Muse Spark 1.3 is a multimodal reasoning model from Meta for long-running agentic, multi-agent, and coding workflows. It improves long-horizon agent collaboration, instruction following, and coding efficiency relative to Muse Spark 1.2.
Context
1,048,576
Max output
1,048,576
Input / 1M
$1.25
Output / 1M
$4.25
Providers
9
01Profile
Profile
Released
2026-09-02
Last updated
2026-09-02
Knowledge cutoff
—
Weights
Closed
02Capabilities
Capabilities
Input
text · image · video · pdf · audio
Output
text
Reasoning
Yes
Tool calling
Yes
Structured output
Yes
Attachments
Yes
Cache read
$0.15
Cache write
Not listed
03Pricing
Pricing across 9 providers
Per 1M tokens, USD. Sorted by input price. First-party row highlighted.
04History
Change history
12+ recent events since 2026-09-02
2026-09-04Addedopencodeoffering→ new
2026-09-03Addedempiriolabsoffering→ new
2026-09-03ContextkiloContext window1,048,576→ new
2026-09-03Addedllmgatewayoffering→ new
2026-09-03Addedllmgateway-providersoffering→ new
2026-09-03Addedmetaoffering→ new
2026-09-03Contextnano-gptContext window1,048,576→ new
2026-09-03ContextopenrouterContext window1,048,576→ new
2026-09-03ContextvercelContext window1,048,576→ new
2026-09-02Addedkilooffering→ new
2026-09-02Addednano-gptoffering→ new
2026-09-02Addedopenrouteroffering→ new