← ModelRumors.ai buyer's guide
HEAD TO HEAD · UPDATED NOV 6, 2026
Muse Wonder vs Muse Spark Open
Two Meta models, on sourced numbers only. Green marks the higher (or cheaper) value on each row; the text below only calls a lead when the gap is bigger than measurement noise.
| Muse Wonder | Muse Spark Open | |
|---|---|---|
| Arena Elo | 1507 source ↗ | not published |
| GPQA Diamond | not published | 89.0% source ↗ |
| $ per 1M in / out | $4 / $20 source ↗ | $1.25 / $4.25 source ↗ |
| Blended $ per 1M (3:1) | $8.00 source ↗ | $2.00 source ↗ |
| Context window | not published | 1M source ↗ |
| Output speed | not published | 153 tok/s source ↗ |
| Released | Oct 12, 2026 source ↗ | Oct 15, 2026 source ↗ |
| Open weights | No source ↗ | Yes source ↗ |
| Reasoning effort tiers | minimal · low · medium · high · xhigh · max (default: not stated) | not verified (default: not stated) |
| API effort control | reasoning_effort="minimal" | "low" | "medium" | "high" | "xhigh" | "max" (Chat Completions) source ↗ | Not verified: reasoning controls depend on the host source ↗ |
| Additional benchmarks | Arena Text: 1507 (#4, Max effort) source ↗ | Size: 816B total, 42B active (MoE) source ↗ Output speed: 153 tok/s, varies by host source ↗ |
| Best for (workload) | Meta's highest-ranked model on Arena Text (1507, #4 at Max effort). The API is in preview. source ↗ | Meta's large open-weights model (816B total, 42B active) with a 1M context window; 89.0% GPQA Diamond (Meta). source ↗ |
Arena Elo from the arena.ai text leaderboard as of Oct 27, 2026 source ↗. Speed measured by Artificial Analysis and varies by provider.
Which one should I use?
For high-volume work where cost matters most, Muse Spark Open is about 4.0 times cheaper per token. If you need to self-host or fine-tune, only Muse Spark Open has open weights. Both are Meta models. Meta is at day 22 of a typical ~14-day gap between releases (PAST TYPICAL GAP).
Key differences from the sourced numbers
- Muse Spark Open is the cheaper option: $2.00 vs $8.00 per 1M tokens at a 3:1 input-to-output mix (about 4.0 times less).
- Muse Wonder pricing note: Meta Model API, in preview.
- Muse Spark Open pricing note: Hosted price on OpenRouter (ID meta/muse-spark-open) and Together AI (ID meta-models/Muse-Spark-Open-816B-A42B). Open weights under the Muse Model License.
Frequently asked questions
Is Muse Wonder or Muse Spark Open better?
Muse Spark Open is the cheaper option: $2.00 vs $8.00 per 1M tokens at a 3:1 input-to-output mix (about 4.0 times less). Muse Wonder pricing note: Meta Model API, in preview. Muse Spark Open pricing note: Hosted price on OpenRouter (ID meta/muse-spark-open) and Together AI (ID meta-models/Muse-Spark-Open-816B-A42B). Open weights under the Muse Model License.
Which one should I use: Muse Wonder or Muse Spark Open?
For high-volume work where cost matters most, Muse Spark Open is about 4.0 times cheaper per token. If you need to self-host or fine-tune, only Muse Spark Open has open weights. Both are Meta models. Meta is at day 22 of a typical ~14-day gap between releases (PAST TYPICAL GAP).
How much does Muse Wonder cost compared with Muse Spark Open?
Muse Wonder lists at $4 / $20 per 1M input/output tokens ($8.00/1M blended at 3:1). Muse Spark Open lists at $1.25 / $4.25 per 1M input/output tokens ($2.00/1M blended at 3:1).
Facts checked Nov 5, 2026 against official sources. Every number links to its source. Spotted an error? Email [email protected].