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Muse Spark 1.3 (max)

★ featured
Meta · released 2026-09-02 · 1 recorded token offers

Top 1 cheapest providers (Adjusted $/task)

Within the active global provider, residency and confidentiality filters.

#ProviderPlatformRaw input $/1MRaw output $/1MAdjusted $/task
1MetaOpenRouter$1.25$4.25

Benchmarks

Composite95.4
Composite evidence5/5
AA Coding · unversioned snapshot 2026-09-1075.8
AA Coding Agent · v1.4 · 2026-09-0968.0
AA Intelligence · unversioned snapshot 2026-09-1048.2
DesignArena Frontend · unversioned snapshot 2026-09-101309
DesignArena Full-Stack · unversioned snapshot 2026-09-101314
Output speed (t/s)360

Intelligence.ai (formerly DesignArena) publishes this result at product/family scope without an effort setting. It is attached exactly once to muse-spark-1.3::max, the deterministic family representative used by collapsed comparisons; this does not assert that Intelligence.ai tested this specific effort setting.

MODEL EVIDENCE

Benchmark sheet

16 / 73 registered benchmark versions covered · 20 observations including existing index snapshots.

Compare this model ↗
Composite retains Coding Agent v1.4 · source 2026-09-09

The five Composite inputs remain unchanged. Its Coding Agent input is the median across complete harness results in the retained v1.4 snapshot from 2026-09-09. Artificial Analysis now publishes v1.5, with different components. Explore current v1.5 separately. Dated snapshot labels on other indices identify unversioned source captures, not a verified semantic version.

Profile signals

No threshold-crossing signal · 17 eligible benchmark families

How flags are calculated

Heuristic screen, not statistical significance: benchmark families are correlated and source uncertainty is unknown. Peer evidence needs ≥ 20 independently measured matched configurations from ≥ 10 distinct model families. A flag needs a directed population z-score of magnitude ≥ 1.5 and a gap of ≥ 1.5 from the leave-one-benchmark-family-out mean z in the same direction, over ≥ 5 other benchmark families.

Protocol-compatible measured/vendor divergences

No verified protocol-compatible vendor/measured pair is available for this model; agreement cannot be assessed.

Agentic

Agentic: every observation for this exact model configuration
Benchmark / versionEvaluation groupScore / provenance
AA-Briefcase

Version snapshot-2026-09-10

Published board

Tests multi-week professional knowledge-work projects with linked tasks and large source collections.

1589.18 Elomeasuredobserved 2026-09-10artificialanalysis.ai
Evidence
Axis: AA-Briefcase · snapshot-2026-09-10 · Published board
Exact value: 1589.18 Elo
Observed: 2026-09-10T21:47:16.627Z · publication date: not recorded
Observation id: aa:9999672c-b687-4026-9c15-5cef02ff53bb:briefcaseBreakdown.overall.elo
GDPval-AA v2

Version 2

Published board

Tests professional knowledge-work deliverables across occupations using AA's Stirrup harness.

1703.34 Elomeasuredobserved 2026-09-10artificialanalysis.ai
Evidence
Axis: GDPval-AA v2 · 2 · Published board
Exact value: 1703.34 Elo
Observed: 2026-09-10T21:47:16.627Z · publication date: not recorded
Observation id: aa:9999672c-b687-4026-9c15-5cef02ff53bb:gdpval
Terminal-Bench v2.1 (AA)

Version 2.1

Published board

Tests terminal-based work on the 89-task verified refresh using Terminus 2.

0.8427 fractionmeasuredobserved 2026-09-10artificialanalysis.ai
Evidence
Axis: Terminal-Bench v2.1 (AA) · 2.1 · Published board
Exact value: 0.842696629213483 fraction
Observed: 2026-09-10T21:47:16.627Z · publication date: not recorded
Observation id: aa:9999672c-b687-4026-9c15-5cef02ff53bb:terminalbenchV21
Terminal-Bench v4.0 (AA)

Version 4.0

Published board

Tests terminal-based work on the 66-task release using mini-SWE-agent v2.4.6.

0.33333 fractionmeasuredobserved 2026-09-10artificialanalysis.ai
Evidence
Axis: Terminal-Bench v4.0 (AA) · 4.0 · Published board
Exact value: 0.333333333333333 fraction
Observed: 2026-09-10T21:47:16.627Z · publication date: not recorded
Observation id: aa:9999672c-b687-4026-9c15-5cef02ff53bb:terminalbenchV40

Coding

Coding: every observation for this exact model configuration
Benchmark / versionEvaluation groupScore / provenance
Artificial Analysis Coding Agent Index v1.4

Version 1.4

Muse Code 1.0.2 RC

The retained AA Coding Agent Index measures coding-agent systems using the earlier three-component implementation.

0.67973 fractionmeasuredobserved 2026-09-09artificialanalysis.ai
Evidence
Axis: Artificial Analysis Coding Agent Index v1.4 · 1.4 · Muse Code 1.0.2 RC
Exact value: 0.6797281481220127 fraction
Observed: 2026-09-09 · publication date: not recorded
Observation id: aa-coding:1.4:8
Artificial Analysis Coding Agent Index v1.5

Version 1.5

Muse Code

Measures coding-agent systems on DeepSWE v1.1, Terminal-Bench 4.0 and SWE-Atlas-QnA.

0.54303 fractionmeasuredobserved 2026-09-10artificialanalysis.ai
Evidence
Axis: Artificial Analysis Coding Agent Index v1.5 · 1.5 · Muse Code
Exact value: 0.5430273329930766 fraction
Observed: 2026-09-10 · publication date: not recorded
Observation id: aa-coding:1.5:f2de07373c3626f1b9269a6ecad7804c
SciCode (AA subproblems)

Version 1.0.1

Published board

Tests scientific Python programming with scientist-annotated background information.

0.58796 fractionmeasuredobserved 2026-09-10artificialanalysis.ai
Evidence
Axis: SciCode (AA subproblems) · 1.0.1 · Published board
Exact value: 0.587962962962963 fraction
Observed: 2026-09-10T21:47:16.627Z · publication date: not recorded
Observation id: aa:9999672c-b687-4026-9c15-5cef02ff53bb:scicode
AA Coding Index

Version snapshot-2026-09-10 (unversioned)

Published board

Published AA index from the retained API snapshot. No verified semantic version was supplied.

75.8 pointsmeasuredobserved 2026-09-10artificialanalysis.ai
Evidence
Axis: AA Coding Index · snapshot-2026-09-10 (unversioned) · Published board
Exact value: 75.8 points
Observed: 2026-09-10 · publication date: not recorded
Observation id: legacy:aa_coding_index:muse-spark-1.3::max
Protocol: inspect · file data/raw/artificialanalysis.json
DesignArena Frontend

Version snapshot-2026-09-10 (unversioned)

Published board

Published Elo. Exact source attachment is retained; fewer than 200 battles excludes a row from radar normalization and anomaly peers.

1309 Elomeasured4573 battlesobserved 2026-09-10designarena.ai
Evidence
Axis: DesignArena Frontend · snapshot-2026-09-10 (unversioned) · Published board
Exact value: 1309 Elo
Observed: 2026-09-10 · publication date: not recorded
Observation id: legacy:frontend:muse-spark-1.3::max
Protocol: inspect · file data/raw/designarena.json
DesignArena Full-Stack

Version snapshot-2026-09-10 (unversioned)

Published board

Published Elo. Exact source attachment is retained; fewer than 200 battles excludes a row from radar normalization and anomaly peers.

1314 Elomeasured3607 battlesobserved 2026-09-10designarena.ai
Evidence
Axis: DesignArena Full-Stack · snapshot-2026-09-10 (unversioned) · Published board
Exact value: 1314 Elo
Observed: 2026-09-10 · publication date: not recorded
Observation id: legacy:fullstack:muse-spark-1.3::max
Protocol: inspect · file data/raw/designarena.json

Knowledge

Knowledge: every observation for this exact model configuration
Benchmark / versionEvaluation groupScore / provenance
Humanity's Last Exam (AA text-only)

Version snapshot-2026-09-10

Published board

Tests expert-level knowledge on AA's text-only Humanity's Last Exam subset.

0.48703 fractionmeasuredobserved 2026-09-10artificialanalysis.ai
Evidence
Axis: Humanity's Last Exam (AA text-only) · snapshot-2026-09-10 · Published board
Exact value: 0.487025023169602 fraction
Observed: 2026-09-10T21:47:16.627Z · publication date: not recorded
Observation id: aa:9999672c-b687-4026-9c15-5cef02ff53bb:hle
AA-Omniscience Index

Version snapshot-2026-09-10

Published board

Tests factual reliability while rewarding correct answers and penalizing hallucinations.

25 pointsmeasuredobserved 2026-09-10artificialanalysis.ai
Evidence
Axis: AA-Omniscience Index · snapshot-2026-09-10 · Published board
Exact value: 25 points
Observed: 2026-09-10T21:47:16.627Z · publication date: not recorded
Observation id: aa:9999672c-b687-4026-9c15-5cef02ff53bb:omniscience

Long-context

Long-context: every observation for this exact model configuration
Benchmark / versionEvaluation groupScore / provenance
GDP.pdf (AA)

Version snapshot-2026-09-10

Published board

Tests professional reasoning over long PDFs with AA document preparation and grading.

0.266 fractionmeasuredobserved 2026-09-10artificialanalysis.ai
Evidence
Axis: GDP.pdf (AA) · snapshot-2026-09-10 · Published board
Exact value: 0.266 fraction
Observed: 2026-09-10T21:47:16.627Z · publication date: not recorded
Observation id: aa:9999672c-b687-4026-9c15-5cef02ff53bb:gdpPdfAllPass
AA-LCR v1.1

Version 1.1

Published board

Tests reasoning across multiple long documents with corrected answer keys and grading.

0.83 fractionmeasuredobserved 2026-09-10artificialanalysis.ai
Evidence
Axis: AA-LCR v1.1 · 1.1 · Published board
Exact value: 0.83 fraction
Observed: 2026-09-10T21:47:16.627Z · publication date: not recorded
Observation id: aa:9999672c-b687-4026-9c15-5cef02ff53bb:lcr
MLCR-AA

Version snapshot-2026-09-10

Published board

Tests medical-record synthesis and reasoning across long, fragmented case documents.

0.41111 fractionmeasuredobserved 2026-09-10artificialanalysis.ai
Evidence
Axis: MLCR-AA · snapshot-2026-09-10 · Published board
Exact value: 0.411111111111111 fraction
Observed: 2026-09-10T21:47:16.627Z · publication date: not recorded
Observation id: aa:9999672c-b687-4026-9c15-5cef02ff53bb:mlcrOverall

Reasoning

Reasoning: every observation for this exact model configuration
Benchmark / versionEvaluation groupScore / provenance
AA Intelligence Index

Version snapshot-2026-09-10 (unversioned)

Published board

Published AA index from the retained API snapshot. No verified semantic version was supplied.

48.2 pointsmeasuredobserved 2026-09-10artificialanalysis.ai
Evidence
Axis: AA Intelligence Index · snapshot-2026-09-10 (unversioned) · Published board
Exact value: 48.2 points
Observed: 2026-09-10 · publication date: not recorded
Observation id: legacy:aa_intelligence_index:muse-spark-1.3::max
Protocol: inspect · file data/raw/artificialanalysis.json

Science

Science: every observation for this exact model configuration
Benchmark / versionEvaluation groupScore / provenance
CritPt (AA)

Version snapshot-2026-09-10

Published board

Tests research-level physics reasoning with Python, symbolic and numerical answers.

0.24857 fractionmeasuredobserved 2026-09-10artificialanalysis.ai
Evidence
Axis: CritPt (AA) · snapshot-2026-09-10 · Published board
Exact value: 0.248571428571429 fraction
Observed: 2026-09-10T21:47:16.627Z · publication date: not recorded
Observation id: aa:9999672c-b687-4026-9c15-5cef02ff53bb:critpt
GPQA Diamond (AA)

Version snapshot-2026-09-10

Published board

Tests graduate-level biology, physics and chemistry knowledge on the Diamond subset.

0.93535 fractionmeasuredobserved 2026-09-10artificialanalysis.ai
Evidence
Axis: GPQA Diamond (AA) · snapshot-2026-09-10 · Published board
Exact value: 0.935353535353535 fraction
Observed: 2026-09-10T21:47:16.627Z · publication date: not recorded
Observation id: aa:9999672c-b687-4026-9c15-5cef02ff53bb:gpqa

Tool-use

Tool-use: every observation for this exact model configuration
Benchmark / versionEvaluation groupScore / provenance
AutomationBench-AA

Version 1.0.6

Published board

Tests multi-app SaaS workflows through REST tools on a held-out AutomationBench split.

0.57853 fractionmeasuredobserved 2026-09-10artificialanalysis.ai
Evidence
Axis: AutomationBench-AA · 1.0.6 · Published board
Exact value: 0.5785343786538614 fraction
Observed: 2026-09-10T21:47:16.627Z · publication date: not recorded
Observation id: aa:9999672c-b687-4026-9c15-5cef02ff53bb:automationBenchPartialScore
τ³-Banking (AA)

Version 1.0.1

Published board

Tests banking support agents that retrieve policies and change account state through tools.

0.50515 fractionmeasuredobserved 2026-09-10artificialanalysis.ai
Evidence
Axis: τ³-Banking (AA) · 1.0.1 · Published board
Exact value: 0.505154639175258 fraction
Observed: 2026-09-10T21:47:16.627Z · publication date: not recorded
Observation id: aa:9999672c-b687-4026-9c15-5cef02ff53bb:tauBanking
Missing coverage · 57 benchmark versions

No result does not mean a zero, or that the model was never tested. Collection failures and disputed versions retain their distinct status.

Variants / reasoning settings

VariantCoding · snapshot 2026-09-10Intelligence · snapshot 2026-09-10
Muse Spark 1.3 (xhigh)76.545.2
Muse Spark 1.3 (max)75.848.2

Token offers by platform — Adjusted $/task

Adjusted costs are modeled USD per task: AA output tokens × OpenRouter usage I/O (Chutes global fallback). These are general usage and benchmark proxies for coding-agent work. Missing AA data assumes 1,000 output tokens/task; unknown cache hit assumes 0%; unmeasured additional cache writes assume 0 tokens. Click any underlined price for exact inputs, dates and assumptions. Raw list prices use the selected fixed input/output blend, in USD per million tokens.

1 offers within the active global filters; “—” means the catalog is active but no public token price is available.

OpenRouter (1)

Metaglobalmeta$1.25 raw in $/1M$4.25 raw out $/1M
Benchmark Heaven — Model benchmarks & costs