Skip to main content
Radar

Five or fewer confirmed AI changes, with original sources, on mornings when something changed.A free source-linked morning brief.

Start free brief
Superseded.Meta has newer models in this line:Muse Spark 1.1

Muse Spark

SupersededReleased Apr 8, 2026ProprietaryReasoning262K context

Released Apr 8, 2026 see all recent releases

Decision reading
Muse Spark scores 70.6 out of 100 and ranks #17 of 224. This profile shows 24 source-displayable benchmark rows; its strongest eligible category is Multimodal & Grounded at #9. No comparable first-party API price is published in the catalog.

Data as of August 21, 2026 · How the score is built

Strongest published evidence

Multimodal & Grounded ranks #9. Particularly strong for screenshots, documents, charts, and grounded multimodal workflows.

Validate before choosing

24 published rows leave some tracked benchmark slots empty. No comparable first-party API token rate is published.

Decision snapshot

Each value carries a field reference instead of floating alone. Markers compare this model with the current ranked and priced catalog; they are not absolute quality thresholds.

Capability

70.6/100

field median 58

#17 of 224 ranked models

Price

Not listed

input median $1

No comparable first-party hosted token rate

Speed

Not measured

field median 91.5 tok/s

Time to first token not measured

Context

262Ktokens

field median 200,000

Reported for this model; direct source link not stored

Capability shape

Each axis shows percentile within that category’s eligible cohort. The comparison outline is the median of the six nearest public-score peers; a collapsed vertex means the category is not rank-eligible.

Muse Spark category percentile values

  • Agentic93rd percentile
  • Coding86th percentile
  • ReasoningNot eligible
  • KnowledgeNot eligible
  • MathNot eligible
  • MultilingualNot eligible
  • Multimodal76th percentile
  • Instruction followingNot eligible

The dashed outline is median of 6 nearest peers.

Eligible category ranks

  1. Agentic#11/137
  2. Coding#21/141
  3. ReasoningNot ranked
  4. KnowledgeNot ranked
  5. MathNot ranked
  6. MultilingualNot ranked
  7. Multimodal#9/34
  8. Inst. FollowingNot ranked
Top decileTop quartileMid-fieldNot eligible

How much of this is verified

Coverage is split by category so a strong number never hides a thin evidence base. Verified means the row is tied to a published source; provisional rows remain visible but separate.

  1. Agentic5/5 verified
  2. Coding4/4 verified
  3. Reasoning1/1 verified
  4. Knowledge5/5 verified
  5. Math2/2 verified
  6. MultilingualNot measured
  7. Multimodal7/7 verified
  8. Inst. FollowingNot measured
Verified sourceProvisionalNot measured

Spec sheet

Each documented value carries its source. Missing fields stay visible as not sourced or not published, rather than disappearing from the page.

API model ID
Not published
Context window
262K
Maximum output
Not sourced yet
Knowledge cutoff
Not sourced yet
Input modalities
Not sourced yet
Output modalities
Not sourced yet
Parameters
Not disclosed by the provider
Availability
Not sourced yet
Cloud regions
Not tracked yet
Lifecycle
Superseded
API capabilities
Tool calling, structured outputs, and batch support are not tracked yet
Prompt caching
Not documented in the pricing record
Self-host
Weights are not published
Rate limits
Not tracked yet

Category score record

Scores and ranks appear only where published evidence can be displayed. The table keeps the score, weight, cohort, and evidence state together.

Category scores, ranks, weighting, benchmark coverage, and evidence status
CategoryScore
AgenticRank #11 of 137Percentile 93rdWeight 22%5 benchmarksVerified64.9
CodingRank #21 of 141Percentile 86thWeight 20%4 benchmarksVerified63.1
ReasoningRank Not rankedWeight 17%1 benchmarkVerified39.7
KnowledgeRank Not rankedWeight 12%5 benchmarksVerified74.6
MathRank Not rankedWeight 5%2 benchmarksVerified55.8
MultilingualWeight 7%0 benchmarksNot measuredNot measured
MultimodalRank #9 of 34Percentile 76thWeight 12%7 benchmarksVerified75.6
Inst. FollowingWeight 5%0 benchmarksNot measuredNot measured

Benchmark ledger

Coding opens by default. The marker compares each value with the best source-verified result in the catalog; provisional leaders do not set the reference. Expand the remaining categories for every published row.

Coding4 rows
Coding benchmark values, best verified comparison, weight, and source status
SWE-bench VerifiedSoftware Engineering Benchmark VerifiedScore77.4%Versus best verified row

Best verified: Claude Opus 5 · 96%

Gap18.6 behindWeightWeighted 16%
SWE-bench ProScore52.4%Versus best verified row

Best verified: Claude Mythos 5 · 80.3%

Gap27.9 behindWeightWeighted 10%
LiveCodeBench ProScore80.0%Versus best verified row

Best verified: Sakana Fugu-Ultra · 90.8%

Gap10.8 behindWeightDisplay only
Vibe Code BenchVibe Code Bench v1.1Score19.67%Versus best verified row

Best verified: Claude Opus 4.7 · 71.00%

Gap51.3 behindWeightDisplay only
Agentic5 rows
Agentic benchmark values, best verified comparison, weight, and source status
Terminal-Bench 2.0Score59%Versus best verified row

Best verified: GPT-5.6 Sol · 91.9%

Gap32.9 behindWeightWeighted 38%
τ²-bench resultsτ²-Bench Tool-Agent-User EvaluationScore91.5%Versus best verified row

Best verified: GPT-5.4 · 98.9%

Gap7.4 behindWeightDisplay only
DeepSearchQAScore74.8%Versus best verified row

Best verified: Claude Opus 5 · 95.0%

Gap20.2 behindWeightDisplay only
CyberGymScore43.5%Versus best verified row

Best verified: Fugu Cyber · 86.9%

Gap43.4 behindWeightDisplay only
Benchmark exact
Claw-EvalScore63.8%Versus best verified row

Best verified: Ornith-1.5-397B · 81.4%

Gap17.6 behindWeightDisplay only
Benchmark exact
Reasoning1 row
Reasoning benchmark values, best verified comparison, weight, and source status
ARC-AGI-2Abstraction and Reasoning Corpus for AGI v2Score42.5%Versus best verified row

Best verified: GPT-5.6 Sol · 92.5%

Gap50 behindWeightWeighted 31%
Knowledge5 rows
Knowledge benchmark values, best verified comparison, weight, and source status
HLEHumanity's Last ExamScore50.4%Versus best verified row

Best verified: Claude Opus 5 · 64.7%

Gap14.3 behindWeightWeighted 45%
GPQA-DGPQA DiamondScore89.5%Versus best verified row

Best verified: Sakana Fugu-Ultra · 95.5%

Gap6 behindWeightDisplay only
HLE w/o toolsHumanity's Last Exam without toolsScore42.8%Versus best verified row

Best verified: Claude Mythos 5 · 59%

Gap16.2 behindWeightDisplay only
HealthBench HardScore42.8%Versus best verified row

Best verified: Muse Spark · 42.8%

GapBest verifiedWeightDisplay only
MedXpertQA (Text)MedXpertQA TextScore52.6%Versus best verified row

Best verified: Muse Spark · 52.6%

GapBest verifiedWeightDisplay only
Math2 rows
Math benchmark values, best verified comparison, weight, and source status
FrontierMath v2 (Tiers 1-3)FrontierMath v2 Tiers 1-3Score39.000%Versus best verified row

Best verified: GPT-5.6 Sol · 89.000%

Gap50 behindWeightWeighted 30%
FrontierMath v2 (Tier 4)FrontierMath v2 Tier 4Score14.600%Versus best verified row

Best verified: GPT-5.6 Sol · 83.000%

Gap68.4 behindWeightWeighted 10%
Multimodal7 rows
Multimodal benchmark values, best verified comparison, weight, and source status
MMMU-ProMassive Multi-discipline Multimodal Understanding ProScore80.4%Versus best verified row

Best verified: GPT-5.4 Pro · 94%

Gap13.6 behindWeightWeighted 45%
CharXivCharXiv ReasoningScore86.4%Versus best verified row

Best verified: Claude Mythos 5 · 93.5%

Gap7.1 behindWeightWeighted 25%
ERQAScore64.7%Versus best verified row

Best verified: Qwen3.8 Max · 77.8%

Gap13.1 behindWeightDisplay only
SimpleVQAScore71.3%Versus best verified row

Best verified: Qwen3.7 Plus · 81.7%

Gap10.4 behindWeightDisplay only
ScreenSpot ProScore84.1%Versus best verified row

Best verified: Claude Opus 4.8 · 87.9%

Gap3.8 behindWeightDisplay only
ZeroBenchScore33.0%Versus best verified row

Best verified: Muse Spark · 33.0%

GapBest verifiedWeightDisplay only
MedXpertQA (MM)MedXpertQA MultimodalScore78.4%Versus best verified row

Best verified: Qwen3.8 Max · 80.4%

Gap2 behindWeightDisplay only

Lineage

The sequence follows explicit supersedes links. Scores and prices remain blank when the corresponding public row or first-party rate is unavailable.

Apr 8, 2026 · you are here

Muse Spark

Score 70.6 · Price not listed

Base entry

How to read this profile

The visual layer above carries the decisions. These notes preserve the model, ranking, coverage, and family context behind the numbers.

Muse Spark ranks #17 of 224 on the public leaderboard with a score of 70.6/100. Its source-verified position is #14 of 104.

Muse Spark is a proprietary model with a 262K context window. It uses an explicit reasoning mode, which can improve complex problem solving while adding latency and token use.

Official exact-value snapshot from Meta's April 8, 2026 Muse Spark launch post and evaluation methodology. BenchLM maps directly comparable benchmark keys from Meta's first-party charts as display-only rows when needed, while screenshot-only eval groupings such as Figure Understanding and the Contemplating-mode table remain outside the weighted BenchLM schema.

Muse Spark sits in the Muse Spark family with Muse Spark 1.2, Muse Spark 1.1. 24 of 402 tracked benchmark slots currently have displayable evidence. Missing categories stay blank.

Its strongest eligible category is Multimodal & Grounded at #9, while its lowest eligible position is Coding at #21. particularly strong for screenshots, documents, charts, and grounded multimodal workflows.

Radar

Muse Spark release history

Full release history

Frequently asked questions

How does Muse Spark perform overall in AI benchmarks?

Muse Spark ranks #17 out of 224 models on the public BenchAlign leaderboard, with a score of 70.6/100. Its evidence status is Supported, and this profile shows 24 source-displayable benchmark rows. The label describes evidence depth, not a provider quality claim; inspect category rows before choosing a workload.

Is Muse Spark good for knowledge and understanding?

Muse Spark has source-displayable benchmark coverage for knowledge and understanding, but the public category table does not assign it a rank there. The individual rows remain available for inspection. A missing category position means the evidence threshold was not met; it does not convert the model's unmeasured work into a zero.

Is Muse Spark good for coding and programming?

Muse Spark ranks #21 out of 141 eligible models for coding and programming, with a public category score of 63.1/100. Higher-ranked alternatives are available for workloads where this category decides the choice. Check the underlying rows before treating the aggregate as a workload guarantee.

Is Muse Spark good for mathematics?

Muse Spark has source-displayable benchmark coverage for mathematics, but the public category table does not assign it a rank there. The individual rows remain available for inspection. A missing category position means the evidence threshold was not met; it does not convert the model's unmeasured work into a zero.

Is Muse Spark good for reasoning and logic?

Muse Spark has source-displayable benchmark coverage for reasoning and logic, but the public category table does not assign it a rank there. The individual rows remain available for inspection. A missing category position means the evidence threshold was not met; it does not convert the model's unmeasured work into a zero.

Is Muse Spark good for agentic tool use and computer tasks?

Muse Spark ranks #11 out of 137 eligible models for agentic tool use and computer tasks, with a public category score of 64.9/100. Higher-ranked alternatives are available for workloads where this category decides the choice. Check the underlying rows before treating the aggregate as a workload guarantee.

Is Muse Spark good for multimodal and grounded tasks?

Muse Spark ranks #9 out of 34 eligible models for multimodal and grounded tasks, with a public category score of 75.6/100. That places it in the current top ten for this category. Check the underlying rows before treating the aggregate as a workload guarantee.

Which sibling models are related to Muse Spark?

Muse Spark belongs to the Muse Spark family. Related tracked variants include Muse Spark 1.2, Muse Spark 1.1. A sibling link indicates shared lineage or a documented configuration relationship; it does not mean the variants have identical pricing, context limits, benchmark evidence, or deployment behavior. Compare before switching.

Does Muse Spark have full benchmark coverage on BenchLM?

No. Muse Spark currently has 38 source-displayable rows across 402 tracked benchmark slots. The profile exposes published, non-generated evidence and leaves missing categories blank until an exact evaluation is available. Coverage describes how much was measured; it is not a penalty added to an individual benchmark result.

What is the context window size of Muse Spark?

Muse Spark has a reported context window of 262K in the exact-model catalog record. The value stays visible, but the profile marks its source link as unavailable instead of presenting it as directly documented. Maximum output length remains separate because providers often publish a different limit.

Last updated August 21, 2026. Runtime fields remain blank until a sourced snapshot exists.

Watch Muse Spark in the weekly brief

Get one weekly email when material rank, price, availability, or benchmark evidence changes are worth revisiting.

Read a sample issue

Join 2,000+ readers.