MODEL PROOF
Muse Spark 1.2
BETTER VALUE OPTION
A stored alternative has an equal-or-higher measured score and an equal-or-lower price.
Muse Spark 1.3 · Δ score 4.9 points · same measured price · $2.00 / 1M tokens
MiMo-V2.6-Pro is a further stored option with these losses: 944K → 131K max output, no file input
- Independent LMArena score
- 1,484.9 ± 7.38 · 7,611 votes
- Context window
- 1.05M
- Maximum output
- 943.72K
- Input modalities
- text, image, video, file, audio
- Output modalities
- text
- Published input price
- $1.25 / 1M tokens
- Published output price
- $4.25 / 1M tokens
- Pricing kind
- fixed
Inspect complete billing conditions and endpoint terms below.
Price from Meta: the cheapest offer that is serving, at standard delivery, with at least 90% of the reference context and at the maker’s precision or better, at its standard rate.
Every price dimension · USD per million tokens
| Input | $1.25/M |
|---|---|
| Output | $4.25/M |
| Cached input | $0.150/M |
| Cache write | Unknown/M |
| Cache write 1h | Unknown/M |
| Reasoning | Unknown/M |
| Web search | $0.0025/call |
Who sells it
The same weights, different shops. Cheapest is not like-for-like when serving precision differs.
1 provider offers · rates, limits and conditions
Rates are USD per million tokens. Endpoint terms can differ even when the quoted price and precision match. A listed parameter is a provider declaration, not a task-success test.
| Seller | Input | Output | Precision | Uptime (1d) |
|---|---|---|---|---|
| Metameta Endpoint terms
| $1.25 | $4.25 | undeclared | 100.00% |
Independent scores
| LMArena Elo | 1484.9xhigh |
|---|---|
| LMArena row | muse-spark-1.2 (xHigh) |
LMArena Elo under CC BY 4.0. Absence of another board is not a score of zero.
Best rankings by task
- ASCII art #4 1283
- Websites #9 1313
- SVG #9 1286
- Data visualisation #10 1334
- Native Android apps #10 1227
- Code categories #12 1313
- Full-stack apps #15 1210
- Python pptxslides #15 1198
Per-task Elo and rank from Design Arena, via OpenRouter’s model feed. The rank is the feed’s, and it counts models OpenRouter does not list.
Capability
| Context window | 1M |
|---|---|
| Max output | 943K |
| Input modes | text, image, video, file, audio |
| Tool use | yes |
| Reasoning | always on |
| Open weights | no |
Provenance
| Price source | openrouter.ai |
|---|---|
| Fetched | 2026-10-21 |
| Held | Input types kept at the published record of 2026-10-06, and the description at that record’s source, data/models.json (sha256 022686ca…, listed in publication manifest 68e2fd78…), while newer upstream values are reviewed. |
| Quality data | verified |
| Cross-checked | vendor page |
Our take
editorial — not a measurementMuse Spark accepts several input modalities in the recorded endpoint. Evaluate that fit directly; multimodal support does not establish task quality. Consult the current proof for benchmark coverage. The hosted listing and contributor variant are separate offers, and neither a shared name nor a low price proves equivalent quality or service terms.
Strengths
- Text, image, video, file and audio input are listed
- Tools and reasoning support are recorded
Weaknesses
- Use the proof to establish whether a measured comparison is available
- Check the selected seller’s offer conditions and the separate output ceiling
Reach for it when
- Multimodal task evaluations
- Comparisons between explicitly identified hosted offers
Avoid it if
- Your decision requires benchmark evidence absent from the current proof
- You require an exact open-weight release that has not been established
Sources: openrouter.ai
Muse Spark 1.2 is a reasoning model from Meta, designed for complex agentic tasks. It accepts text, images, video, audio, and PDF documents, returns text, and offers a 1M-token context...
Questions this page answers
What does Muse Spark 1.2 cost?
$1.25/M in, $4.25/M out in this catalogue, as of the fetch date on this page. That is the API row, not a subscription.
Does Muse Spark 1.2 have an independent quality score?
Muse Spark 1.2 has an LMArena score in this catalogue.
What beats Muse Spark 1.2?
Muse Spark 1.3 has an equal-or-higher measured score and an equal-or-lower price.
Does this page use Artificial Analysis scores for Muse Spark 1.2?
No. Artificial Analysis figures are not published here. Quality on this page is LMArena Elo where a score exists; otherwise the row is unrated.
MODEL MONUMENT
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Badge
The verdict as one SVG, for a README or a docs page. It states this model's dominance status at the balanced workload on the LMArena lens, with the date it was computed, and it is rebuilt with the catalogue — so it changes when the verdict changes, including to one you would rather it did not.
[](https://undominated.ai/models/meta__muse-spark-1.2/)<a href="https://undominated.ai/models/meta__muse-spark-1.2/"><img src="https://undominated.ai/badge/meta__muse-spark-1.2.svg" alt="Muse Spark 1.2 — Undominated.ai dominance verdict" height="36"></a>Direct file: https://undominated.ai/badge/meta__muse-spark-1.2.svg — a static SVG, written by scripts/build-badges.mjs on every build, so the copy you embed is never
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