Muse Ember is Meta's smallest and most efficient reasoning model, built for the work agents repeat all day: tool calls, coding subtasks, routing, extraction, and long-document parsing. It pairs with Muse Wonder or Muse Spark, which plan while Muse Ember handles the volume.
Specification
most-agreed values
Context
1M
Max output
524K
Released
2026-11-09
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
$0.50
Cache read
$0.004
Cache write
free
Long-context price tiers
the rate above each context threshold
| Above | Price | $/M |
|---|---|---|
| 200K | Cache read | $0.012 |
| 200K | Input | $0.30 |
| 200K | Output | $1.50 |
Available from 5 hosts
| Host | In $/M | Out $/M | Cache rd | Cache wr | Context | Output | Retires |
|---|---|---|---|---|---|---|---|
| cloudflare-ai-gateway | $0.10 | $0.50 | $0.004 | — | 1M | 524K | — |
| llmgateway | $0.10 | $0.50 | $0.004 | — | 1M | 524K | — |
| llmgateway-providers | $0.10 | $0.50 | $0.004 | — | 1M | 524K | — |
| meta | $0.10 | $0.50 | $0.004 | — | 1M | 524K | — |
| opencode | $0.10 | $0.50 | $0.004 | free | 1M | 270K | — |
Price history
append-only observations · a listing writes a row only when its price moves
| Date | Host | Field | $/M |
|---|---|---|---|
| 2026-11-10 | meta | Cache read | $0.004 |
| 2026-11-11 | meta | Cache read | $0.004 |
| 2026-11-10 | meta | Input | $0.10 |
| 2026-11-11 | meta | Input | $0.10 |
| 2026-11-10 | meta | Output | $0.50 |
| 2026-11-11 | meta | Output | $0.50 |
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