Clinical Benchmarks
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Muse Spark Open

Released 15 Oct 20261M context816B total / 42B activeMuse Model LicenseAlso written as Muse Spark Open, meta/muse-spark-open, Meta: Muse Spark Open, Muse-Spark-Open-816B-A42B

2 results on 2 of 14 boards, latest measured Nov 2026. Compare with other models

Clinical Benchmarks Index42.0Rank 87 of 1282 of 12 boardsThis site’s own calculation. Show the working How it is computed

On the Clinical Benchmarks Index

The top 15 on the index, then Muse Spark Open at rank 87. Select a column to open that model.

  1. 63.2Claude Sonnet 5.5
  2. 62.8Claude Opus 5.5
  3. 56.8Claude Opus 5
  4. 56.8Claude Fable 5.1
  5. 56.1GPT-6 Astra
  6. 55.5Claude Haiku 5.5
  7. 53.9GPT-6.1 Sol
  8. 52.7Muse Spark 1.1
  9. 52.4Kimi K3.1 Pro
  10. 51.8Gemini 4 Argon
  11. 51.7GPT-5.5
  12. 51.7GPT-6.1 Terra
  13. 51.5Muse Wonder
  14. 51.4GPT-5.6 Sol
  15. 42.0Muse Spark Open

Board by board

Muse Spark Open against the top 10 on each board it has a result on, on that board's own scale. Its own column is in colour.

Bedside Benchrank 2 of 15

  1. 94.6Claude Opus 5
  2. 94.3Muse Spark Open
  3. 93.4GPT-6 Astra
  4. 92.7Gemini 4 Argon
  5. 91.1GPT-5.6 Sol
  6. 89.7Kimi K3
  7. 89.1Ember-1
  8. 88.1GPT-6 Sol
  9. 87.2GPT-6 Luna
  10. 86.9GLM 5.3

15 modelsFull board

MLCR-AArank 26 of 27

  1. 41.7Claude Sonnet 5.5 (Max, Default Fallback)
  2. 41.7GPT-6 Astra (Max)
  3. 38.3GPT-6.1 Sol (Max)
  4. 38.3Kimi K3.1 Pro
  5. 35.0Claude Haiku 5.5 (Max)
  6. 33.9GPT-6 Sol (Max)
  7. 31.7GPT-5.5 Instant (June 2026)
  8. 30.6GPT-6.1 Terra (Max)
  9. 27.8Claude Opus 5.5
  10. 7.8Muse Spark Open (Xhigh)

27 modelsFull board

Every result, with its source

Each line sits on its own board's scale. Tall tick: the board leader.

Clinical reasoning and knowledge

  1. Bedside Bench
    Score (avg@3)
    94.3
    Rank 2 of 15 here, 16 models on the boardLeader Claude Opus 5 94.6
    Official leaderboard
    Measured Oct 2026

Documentation and coding

  1. MLCR-AA
    overall pass rate, Xhigh
    7.8
    Rank 26 of 27Leader Claude Sonnet 5.5 (Max, Default Fallback) 41.7
    Independent run
    Measured Nov 2026

Index working

Show the working: each board’s result, how hard the board runs and the field average

The Clinical Benchmarks Index is this site's own calculation from 12 boards. How it is computed

  • Bedside Bench94.394.3+39.2 easy board55.10.25 weight, near its ceilingNear its ceiling: leader 94.6, weight 0.25Score (avg@3)
  • MLCR-AA7.87.8−26.5 hard board34.30.6 weightoverall pass rate, Xhigh
Adjusted average of 2 boards, by weight
40.4
Field average, counts for 42.9% with 2 of 12 boards
44.2
Index
= 42.0

Score: the result on the board’s own 0 to 100 scale (dot; tick: the board’s leader). Board runs: how far the board’s scores sit above or below the same models’ scores on the other boards. Adjusted: the score minus that offset. The index is the adjusted average with the field average mixed in, more of it the fewer boards a model has. Each result links to its quote and page; the line under it is the setting it was measured with.

Sources

The quote, page and document for each of the 2 results
  1. 2Bedside Bench Score 94.3
    Printed as 94.3Official leaderboard, measured Oct 2026Configuration: Score (avg@3)
    Bedside Bench on the Fireworks Specialized Intelligence Index official leaderboard, Fireworks AI, 22 Oct 2026. https://fireworks.ai/specialized-intelligence-index/benchmarks/healthcare/bedside-bench (feed: benchmarks[id=healthcare/bedside-bench].results)
    Muse Spark Open 94.3 (Score (avg@3)), rank 3
    Every result from this document
  2. 26MLCR-AA overall pass rate 7.8
    Printed as 7.8%Independent run, measured Nov 2026Configuration: overall pass rate, Xhigh
    MLCR-AA (Medical Long Context Reasoning), Artificial Analysis official leaderboard, Artificial Analysis, 5 Nov 2026. artificialanalysis.ai/evaluations/mlcr-aa, Score chart (mlcrAaOverallPassRate)
    Muse Spark Open (Xhigh): 7.8% (Score: share of responses judged complete with no claim contradicting the record)
    Every result from this document

Other Meta models: Llama 4 Maverick, Llama 4 Scout, Muse Spark, Muse Spark 1.1, Muse Spark 1.2, Muse Spark 1.3, Muse Wonder, Muse Wonder Full