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ModelCap

Muse Spark 1.1

All-versions archive #19Arena #11API only

Meta·meta/muse-spark-1.1

Muse Spark 1.1 is ModelCap archive rank #19 (Measured), from the ModelCap Index as of 22 Sept 2026, 02:49 UTC.

Muse Spark 1.1 listed OpenRouter input price is $1.25 per 1M tokens and listed output price is $4.25 per 1M tokens, from OpenRouter listed prices as of 22 Sept 2026, 02:49 UTC.

Muse Spark 1.1 has a published context limit of 1M tokens in the ModelCap catalogue as of 22 Sept 2026, 02:49 UTC.

Muse Spark 1.1 has 1 published OpenRouter serving endpoint, from OpenRouter as of 22 Sept 2026, 02:49 UTC.

Muse Spark 1.1 weight access is api only, from ModelCap classification of published repository metadata as of 22 Sept 2026, 02:49 UTC.

Snapshot facts · download the public dataset · methodology

ModelCap Index · All-versions archive
81.4#19
Measured · 87% support · score interval 75.6–87.2
Evidence as of 19 Sept 2026, 22:46 UTC
Market Gravity
40.9Decreased by 0.1
Secondary market signal

Superseded by Muse Spark 1.3. It no longer holds a current-board position; its all-versions archive rank is #19.

Input
$1.25
per 1M tokens
Output
$4.25
per 1M tokens
Context
1M
tokens
Providers
1
endpoint
Gateway spend
latest · Vercel share

Providers

Uptime measured over the last 30 minutes
ProviderInputOutputContextQuantUptime
Meta$1.25$4.251M

Reasoning efforts

Best supported result can inform ModelCap

Published Max, X-High, High and other configurations for this model. These are sourced scores, not head-to-head essays.

EffortAgent scoreSource rankSampleSource
Default
Muse Spark 1.1
-2.98%
CI -3.5-2.4%
#334.4M obs
109K sessions
LMArena Agent
Match 100%

Other versions (2)

ModelCap Index · All-versions archive

Methodology
81.4
Measured · 5 public benchmark observations across 5 boards
All-versions archive
#19
Public rank basis
Measured (measured)
Index support
87.0% · strong
Index interval
75.6–87.2
Rank posterior
Not available
Top 5 / Top 10 probability
Not available / Not available
Posterior as of
Snapshot timestamp unavailable
Evidence as of
19 Sept 2026, 22:46 UTC
Identity binding
Exact catalogue product · meta/meta/muse-spark-1.1 · aggregates disclosed benchmark configurations · endpoint configuration not claimed
Index observations used
5
Qualified Index evidence point
81.4
Bayesian Evidence Score · measured evidence input only

BES normalizes admitted public benchmark evidence for measured Index rows. Its legacy score and observables prior do not define the public language rank.

Observed capability
81.4
Evidence status
confirmed · 94% mass
General preference
82.6
Coding
82.5
Agents & tools
46.9
Reasoning
Evidence breadth
97%
Evidence coverage
87%
Market and catalogue signals · secondary, never the language Index rank
Usage (OpenRouter popularity)
9.5
Liquidity (providers × uptime)
97.4
Open reach (HF downloads)
Surface (context / tools / modalities)
100.0
Freshness
77.3
  • · OpenRouter popularity #186
  • · 1 live provider
  • · Catalogue: context 1048576, reasoning, tools, modalities Text/Image/Video/File/Audio
  • · First seen 2026-07-16

These adoption and deployment observations remain context only. They do not change this model's ModelCap Index score or rank.

BES evidence selected · measured input only

The bounded 0–100 capability score blends each source’s competitive placement with its published achievement, then combines capability families. Evidence breadth adds a modest uncertainty adjustment; price and popularity are not part of benchmark-led rank.

Deployment readiness

Metadata index
46.7
partial · 56% metadata coverage
Not capability
Artifact reproducibility
0.0
Access & legal clarity
30.3
Deployability
80.0
Evaluation provenance
83.4

Missing: artifactReproducibility.revision-sha, artifactReproducibility.architecture-and-model-type, artifactReproducibility.parameter-count, artifactReproducibility.serialized-weight-format, artifactReproducibility.base-lineage, accessLegalClarity.declared-license, accessLegalClarity.resolvable-license-terms, evaluationProvenance.evaluation-dataset-revisions.

A metadata completeness and deployability index—not a safety certification, quality grade, or production-readiness claim.

Market activity

Venue coverage
Market Gravity
40.9
OpenRouter weekly popularity
#186 of 322

Market Gravity uses OpenRouter’s full-catalogue popularity order. Sparse Vercel top-ten observations appear only when published and do not affect the score.

Arena preference

Status
Ranked
Source
LMArena
Official rank
#11 of 402
Rating
1492.6
95% confidence interval
1488–1497
Votes
28K
Source published at
13 Sept 2026, 00:00 UTC
Category
overall
Identity match confidence
100%

Market Gravity breakdown

Usage55%
9.5

OpenRouter weekly popularity across the full model catalogue.

Liquidity25%
97.4

Independent providers versus the model's open or closed cohort, weighted by uptime.

Open reach15%
50.0

Hugging Face 30-day downloads for open models; neutral for closed models.

Freshness5%
77.3

Time since first public availability, on a six-month half-life.

Specification

Context window
1M tokens
Max output
944K tokens
Inputs
Text, Image, Video, File, Audio
Outputs
Text
Tokenizer
Other
Cached input tokens
$0.15 / 1M
First seen on OpenRouter
16 Jul 2026

Capabilities

  • Supported: Reasoning
  • Supported: Tool use
  • Supported: Structured output
  • Supported: Response format
  • Supported: Moderated

Benchmark leaderboards featuring Muse Spark 1.1

All leaderboards
Public benchmark boards on which Muse Spark 1.1 has a published result
LeaderboardScoreSource rankConfigurationPublished
Arena coding leaderboardArena (LMArena)15311524–1539#13 of 397Default13 Sept 2026
LMArena Agent leaderboardLMArena-3.0%-3.5%–-2.4%#33 of 46Default15 Sept 2026
Artificial Analysis Intelligence IndexArtificial Analysis33.7#59 of 151intelligence-index:v4.3:xhigh19 Sept 2026
Humanity's Last Exam (Artificial Analysis run)Artificial Analysis46.2%#27 of 615hle:may-2025:text-only-2158:no-tools:pass-at-1:source-model="Muse Spark 1.1 (xhigh)":reasoning=true5 Sept 2026
WildClawBench OpenClaw leaderboardWildClawBench54.8#8 of 34Default20 Jul 2026

Muse Spark 1.1: common questions

How does Muse Spark 1.1 rank among AI models?

Muse Spark 1.1 is a superseded version and is not on the current board as of 22 September 2026. Its archive position, where one exists, is shown on the page; the newer version carries the current rank.

How much does Muse Spark 1.1 cost per 1M tokens?

Muse Spark 1.1 is listed at $1.25 per 1M input tokens and $4.25 per 1M output tokens as of 22 September 2026. Prices come from the OpenRouter catalogue and re-observe on every refresh. For 1,000 requests using 2,000 input and 500 output tokens each, the listed rates imply $4.63 total (2M input + 0.5M output). This excludes caching, batch discounts, prompt-length tiers, tool charges and retries; verify the chosen endpoint's rate and limits before budgeting.

What is the context window of Muse Spark 1.1?

Muse Spark 1.1 has a published context window of 1M tokens (1,048,576) and a maximum output of 944K tokens. Individual providers can serve less than the published maximum; the providers table lists each endpoint's own limit.

Is Muse Spark 1.1 open-weight?

API only. No downloadable model weights are linked in the current source data; access is through a hosted API or product.

Which API providers serve Muse Spark 1.1?

One provider serves Muse Spark 1.1 through OpenRouter as of 22 September 2026: Meta. Each provider's price, context limit, quantization and measured uptime are in the providers table above.

Which benchmarks has Muse Spark 1.1 been evaluated on?

Muse Spark 1.1 has published results on 5 public boards tracked by ModelCap as of 22 September 2026: Arena coding 1531 (#13 of 397), LMArena Agent -3.0% (#33 of 46), AA Intelligence Index 33.7 (#59 of 151), AA Humanity's Last Exam 46.2% (#27 of 615) and WildClawBench OpenClaw 54.8 (#8 of 34). Each board page ranks every tracked model on that benchmark; the ModelCap Index combines them with published uncertainty.

When was Muse Spark 1.1 released?

Muse Spark 1.1 first appeared in the catalogue on 16 Jul 2026. It has since been superseded by Muse Spark 1.3. Rank and price movements since then are recorded on the site's changes feed.