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.
Specification
most-agreed values
Context
1M
Max output
131K
Released
2026-09-02
Knowledge cutoff
—
Retires
—
Open weights
no
Input
text, image, video, pdf, audio
Output
text
Price
US dollars per million tokens · most-agreed
Input
$0.10
Output
$0.20
Cache read
$0.002
Available from 9 hosts
| Host | In $/M | Out $/M | Cache rd | Cache wr | Context | Output | Retires |
|---|---|---|---|---|---|---|---|
| bothub | $0.10 | $0.20 | — | — | 1M | 944K | — |
| kilo | $0.10 | $0.20 | $0.002 | — | 1M | 944K | — |
| llmgateway | $0.10 | $0.20 | $0.002 | — | 1M | 1M | — |
| llmgateway-providers · meta-contributor | $0.10 | $0.20 | $0.002 | — | 1M | 1M | — |
| meta | $0.10 | $0.20 | $0.002 | — | 1M | 131K | — |
| nano-gpt | $0.10 | $0.20 | $0.002 | — | 1M | 944K | — |
| opencode-go | $0.10 | $0.20 | $0.002 | — | 1M | 131K | — |
| openrouter | $0.10 | $0.20 | $0.002 | — | 1M | 944K | — |
| vercel | $0.10 | $0.20 | $0.002 | — | 1M | 1M | — |
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