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Muse Spark 1.3 (xhigh)

★ 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

Composite93.4
Composite evidence3/5
AA Coding · unversioned snapshot 2026-09-1076.5
AA Coding Agent · v1.4 · 2026-09-0964.2
AA Intelligence · unversioned snapshot 2026-09-1045.2
DesignArena Frontend · unversioned snapshot 2026-09-10
DesignArena Full-Stack · unversioned snapshot 2026-09-10
Output speed (t/s)268

MODEL EVIDENCE

Benchmark sheet

17 / 73 registered benchmark versions covered · 19 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 · 16 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.

1483.22 Elomeasuredobserved 2026-09-10artificialanalysis.ai
Evidence
Axis: AA-Briefcase · snapshot-2026-09-10 · Published board
Exact value: 1483.22 Elo
Observed: 2026-09-10T21:47:16.627Z · publication date: not recorded
Observation id: aa:d5170215-69be-4129-849b-26d8d8825bfc:briefcaseBreakdown.overall.elo
GDPval-AA v2

Version 2

Published board

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

1662.34 Elomeasuredobserved 2026-09-10artificialanalysis.ai
Evidence
Axis: GDPval-AA v2 · 2 · Published board
Exact value: 1662.34 Elo
Observed: 2026-09-10T21:47:16.627Z · publication date: not recorded
Observation id: aa:d5170215-69be-4129-849b-26d8d8825bfc:gdpval
Harvey LAB-AA

Version snapshot-2026-09-10

Published board

Tests legal-work deliverables across practice areas on Harvey's private task set.

0.95484 fractionmeasuredobserved 2026-09-10artificialanalysis.ai
Evidence
Axis: Harvey LAB-AA · snapshot-2026-09-10 · Published board
Exact value: 0.954841511072514 fraction
Observed: 2026-09-10T21:47:16.627Z · publication date: not recorded
Observation id: aa:d5170215-69be-4129-849b-26d8d8825bfc:harveyLab
Terminal-Bench v2.1 (AA)

Version 2.1

Published board

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

0.85393 fractionmeasuredobserved 2026-09-10artificialanalysis.ai
Evidence
Axis: Terminal-Bench v2.1 (AA) · 2.1 · Published board
Exact value: 0.853932584269663 fraction
Observed: 2026-09-10T21:47:16.627Z · publication date: not recorded
Observation id: aa:d5170215-69be-4129-849b-26d8d8825bfc: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.

0.16667 fractionmeasuredobserved 2026-09-10artificialanalysis.ai
Evidence
Axis: Terminal-Bench v4.0 (AA) · 4.0 · Published board
Exact value: 0.166666666666667 fraction
Observed: 2026-09-10T21:47:16.627Z · publication date: not recorded
Observation id: aa:d5170215-69be-4129-849b-26d8d8825bfc: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.

0.64178 fractionmeasuredobserved 2026-09-09artificialanalysis.ai
Evidence
Axis: Artificial Analysis Coding Agent Index v1.4 · 1.4 · Muse Code 1.0.2 RC
Exact value: 0.641775036414302 fraction
Observed: 2026-09-09 · publication date: not recorded
Observation id: aa-coding:1.4:49
Artificial Analysis Coding Agent Index v1.5

Version 1.5

Muse Code 1.0.2 RC

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

0.48299 fractionmeasuredobserved 2026-09-10artificialanalysis.ai
Evidence
Axis: Artificial Analysis Coding Agent Index v1.5 · 1.5 · Muse Code 1.0.2 RC
Exact value: 0.482993172759088 fraction
Observed: 2026-09-10 · publication date: not recorded
Observation id: aa-coding:1.5:cd60470c35fd626a116af80fd5915dfa
SciCode (AA subproblems)

Version 1.0.1

Published board

Tests scientific Python programming with scientist-annotated background information.

0.59722 fractionmeasuredobserved 2026-09-10artificialanalysis.ai
Evidence
Axis: SciCode (AA subproblems) · 1.0.1 · Published board
Exact value: 0.597222222222222 fraction
Observed: 2026-09-10T21:47:16.627Z · publication date: not recorded
Observation id: aa:d5170215-69be-4129-849b-26d8d8825bfc: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.

76.5 pointsmeasuredobserved 2026-09-10artificialanalysis.ai
Evidence
Axis: AA Coding Index · snapshot-2026-09-10 (unversioned) · Published board
Exact value: 76.5 points
Observed: 2026-09-10 · publication date: not recorded
Observation id: legacy:aa_coding_index:muse-spark-1.3::xhigh
Protocol: inspect · file data/raw/artificialanalysis.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.

0.47451 fractionmeasuredobserved 2026-09-10artificialanalysis.ai
Evidence
Axis: Humanity's Last Exam (AA text-only) · snapshot-2026-09-10 · Published board
Exact value: 0.47451343836886 fraction
Observed: 2026-09-10T21:47:16.627Z · publication date: not recorded
Observation id: aa:d5170215-69be-4129-849b-26d8d8825bfc:hle
AA-Omniscience Index

Version snapshot-2026-09-10

Published board

Tests factual reliability while rewarding correct answers and penalizing hallucinations.

23.11667 pointsmeasuredobserved 2026-09-10artificialanalysis.ai
Evidence
Axis: AA-Omniscience Index · snapshot-2026-09-10 · Published board
Exact value: 23.1166666666667 points
Observed: 2026-09-10T21:47:16.627Z · publication date: not recorded
Observation id: aa:d5170215-69be-4129-849b-26d8d8825bfc: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.

0.242 fractionmeasuredobserved 2026-09-10artificialanalysis.ai
Evidence
Axis: GDP.pdf (AA) · snapshot-2026-09-10 · Published board
Exact value: 0.242 fraction
Observed: 2026-09-10T21:47:16.627Z · publication date: not recorded
Observation id: aa:d5170215-69be-4129-849b-26d8d8825bfc: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:d5170215-69be-4129-849b-26d8d8825bfc:lcr

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.

45.2 pointsmeasuredobserved 2026-09-10artificialanalysis.ai
Evidence
Axis: AA Intelligence Index · snapshot-2026-09-10 (unversioned) · Published board
Exact value: 45.2 points
Observed: 2026-09-10 · publication date: not recorded
Observation id: legacy:aa_intelligence_index:muse-spark-1.3::xhigh
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.

0.26 fractionmeasuredobserved 2026-09-10artificialanalysis.ai
Evidence
Axis: CritPt (AA) · snapshot-2026-09-10 · Published board
Exact value: 0.26 fraction
Observed: 2026-09-10T21:47:16.627Z · publication date: not recorded
Observation id: aa:d5170215-69be-4129-849b-26d8d8825bfc:critpt
GPQA Diamond (AA)

Version snapshot-2026-09-10

Published board

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

0.94141 fractionmeasuredobserved 2026-09-10artificialanalysis.ai
Evidence
Axis: GPQA Diamond (AA) · snapshot-2026-09-10 · Published board
Exact value: 0.941414141414141 fraction
Observed: 2026-09-10T21:47:16.627Z · publication date: not recorded
Observation id: aa:d5170215-69be-4129-849b-26d8d8825bfc: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.

0.56836 fractionmeasuredobserved 2026-09-10artificialanalysis.ai
Evidence
Axis: AutomationBench-AA · 1.0.6 · Published board
Exact value: 0.5683609003249621 fraction
Observed: 2026-09-10T21:47:16.627Z · publication date: not recorded
Observation id: aa:d5170215-69be-4129-849b-26d8d8825bfc:automationBenchPartialScore
τ³-Banking (AA)

Version 1.0.1

Published board

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

0.47216 fractionmeasuredobserved 2026-09-10artificialanalysis.ai
Evidence
Axis: τ³-Banking (AA) · 1.0.1 · Published board
Exact value: 0.472164948453608 fraction
Observed: 2026-09-10T21:47:16.627Z · publication date: not recorded
Observation id: aa:d5170215-69be-4129-849b-26d8d8825bfc:tauBanking

Vision

Vision: every observation for this exact model configuration
Benchmark / versionEvaluation groupScore / provenance
MMMU Pro (AA)

Version snapshot-2026-09-10

Published board

Tests multimodal understanding using challenging ten-option questions.

0.82023 fractionmeasuredobserved 2026-09-10artificialanalysis.ai
Evidence
Axis: MMMU Pro (AA) · snapshot-2026-09-10 · Published board
Exact value: 0.820231213872832 fraction
Observed: 2026-09-10T21:47:16.627Z · publication date: not recorded
Observation id: aa:d5170215-69be-4129-849b-26d8d8825bfc:mmmuPro
Missing coverage · 58 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