Muse Spark Open (816B-A42B)
Knows up to January 2026Missing 1,945 events
meta-models/Muse-Spark-Open-816B-A42B
$1.25 in, $4.25 out per 1M tokens
Muse Ember 1.0
Model idmuse-ember-1.0
Price$0.10 in, $0.50 out per 1M tokens
Checked10 November 2026
No published training cutoff
At least65events since its release on 9 November 2026
1 historic, 16 major. 4 days of news.
Meta doesn’t publish a training cutoff, so we count from its release date. The real gap is larger.
How to call it
Where to use Muse Ember 1.0, with its model id.
| Provider | Model id | Endpoint | Docs |
|---|---|---|---|
| Meta Model API | muse-ember-1.0 |
https://api.meta.ai/v1/chat/completions |
dev.meta.ai |
Pricing
| Input | $0.10 per 1M tokens |
|---|---|
| Cached input | $0.004 per 1M tokens |
| Output | $0.50 per 1M tokens |
As published: “per 1M tokens (USD) for prompts up to 200K tokens; $0.30 / $0.012 cached / $1.50 above 200K”.
Source: simonwillison.net, checked 10 November 2026.
Specs
- Input
- Text, images and audio
- Output
- Text
- Context window
- 1,000,000 tokens
- Max output
- Not published
- Open weights
- No
- Licence
- Proprietary
- Training cutoff
- Not published
- Released
- 9 November 2026
- Status
- Current
- Type
- Reasoning model
What stands out
What its maker marketed at launch, and what people found later, each with its source.
Cheap agent workhorse
Meta’s smallest Muse model for tool calls, routing, extraction and long-document parsing; six reasoning levels; AA Intelligence Index about 34-36 at roughly $0.12-0.14 per index task.
Notes
Pairs with Muse Wonder (‘Muse Wonder plans, Muse Ember handles the volume’). Endpoint assumed same as other Muse API models; check docs.