2026-10-20UPDATEPlatform updated: 52 models tracked across 42 independent benchmarks including CorpFin • 2026-10-20BENCHCorpFin added to benchmark suite — long credit agreement comprehension evaluations live • 2026-10-19MODELClaude Sonnet 5.5 and Opus 5.5 achieve 75.9% and 75.8% on Excel Modeling Benchmark v1.1 • 2026-10-19MODELTax Agent Bench updated: Claude Fable 5.1 (49.2%) and Gemini 4 Argon (44.6%) lead corporate tax research • 2026-10-18MODELGemini 4 Argon claims #1 rank on Finance Agent (v2) with 65.4% • 2026-10-13MODELGoogle launches Gemini 4 Argon with 1M-token output limit and native multimodal reasoning • 2026-10-06MODELAnthropic completes Claude 5.5 generation with Claude Haiku 5.5, Opus 5.5, and Sonnet 5.5 • 2026-10-20UPDATEPlatform updated: 52 models tracked across 42 independent benchmarks including CorpFin • 2026-10-20BENCHCorpFin added to benchmark suite — long credit agreement comprehension evaluations live • 2026-10-19MODELClaude Sonnet 5.5 and Opus 5.5 achieve 75.9% and 75.8% on Excel Modeling Benchmark v1.1 • 2026-10-19MODELTax Agent Bench updated: Claude Fable 5.1 (49.2%) and Gemini 4 Argon (44.6%) lead corporate tax research • 2026-10-18MODELGemini 4 Argon claims #1 rank on Finance Agent (v2) with 65.4% • 2026-10-13MODELGoogle launches Gemini 4 Argon with 1M-token output limit and native multimodal reasoning • 2026-10-06MODELAnthropic completes Claude 5.5 generation with Claude Haiku 5.5, Opus 5.5, and Sonnet 5.5 •
Home/Models/Muse Spark 1.1
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Muse Spark 1.1

Proprietary#23 on FB Leaderboard1M contextReleased 2026-07-0923 benchmarks evaluated
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62.8
FB Score
#23
Overall rank
FB Score62.8Rank #23
Best benchmark91.2%GPQA Diamond
PAVE overall—%Level 1-4
Benchmarks23 / 42Evaluated
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Score by domain

Verification
74.5%
Rank #5 of 33
Document QA
71.0%
Rank #23 of 45
Numerical
77.5%
Rank #7 of 32
Forensic
53.3%
Rank #32 of 45
Multi-domain
Not evaluated
No data
Agent Tasks
48.2%
Rank #27 of 44
Performance profile
80%Verification74.5%Document QA71.0%Numerical77.5%Forensic53.3%Agent Tasks48.2%
Benchmark results23 evaluated · 19 pending
BenchmarkScoreRankTierWeightSourceDate
Pave Interchange Fee Benchmark
VerificationForensic
——Tier 130FB 2026Pending
FinanceBench
Document QA
——Tier 220FB 2026Pending
FinBen
Multi-domain
——Tier 310FB 2026Pending
FinQA
Numerical
——Tier 220FB 2026Pending
ConvFinQA
Document QA
——Tier 220FB 2026Pending
Finance Agent Benchmark
Agent Tasks
57.2#13 / 44Tier 130FB 20262026-10
MultiHiertt
Numerical
——Tier 310FB 2026Pending
FinAuditing
ForensicCompliance
——Tier 310FB 2026Pending
VALS Index
VerificationNumericalAgent Tasks
54.8#11 / 22Tier 125FB 20262026-07
MortgageTax Benchmark
NumericalForensic
66.1#16 / 22Tier 220FB 20262026-07
TaxEval v2
VerificationForensic
79.7#2 / 24Tier 220FB 20262026-09
Code Migration
Agent Tasks
31.1#12 / 23Tier 310FB 20262026-07
CyberBench
Forensic
——Tier 310FB 2026Pending
Excel Modeling Benchmark
Document QAForensic
56.4#30 / 44Tier 310FB 20262026-09
Legal Research Bench
Document QAForensic
38.0#11 / 22Tier 310FB 20262026-07
MedCode
Verification
——Tier 310FB 2026Pending
MedScribe
Document QA
88.9#3 / 20Tier 310FB 20262026-07
ProofBench v1.1
NumericalVerification
——Tier 310FB 2026Pending
SAGE
Agent Tasks
45.6#11 / 17Tier 310FB 20262026-07
Public Benefits Bench
VerificationForensic
61.3#10 / 16Tier 310FB 20262026-07
Vibe Code Bench v1.1
Agent Tasks
72.2#11 / 23Tier 310FB 20262026-07
Harvey's Legal Agent
Agent TasksForensic
20.0#2 / 22Tier 310FB 20262026-07
GPQA Diamond
NumericalVerification
91.2#11 / 20Tier 215FB 20262026-07
IOI
Numerical
——Tier 310FB 2026Pending
LiveCodeBench
Agent Tasks
85.9#12 / 19Tier 310FB 20262026-07
LegalBench
Document QAForensic
85.0#10 / 21Tier 310FB 20262026-07
MMLU Pro
NumericalVerification
88.7#6 / 21Tier 215FB 20262026-07
MMMU
Document QANumerical
86.6#7 / 14Tier 310FB 20262026-07
ProgramBench
Agent Tasks
0.0#8 / 17Tier 310FB 20262026-07
SkillsBench
Agent Tasks
59.2#5 / 17Tier 310FB 20262026-07
SWE-bench
Agent Tasks
82.0#14 / 22Tier 220FB 20262026-07
Terminal-Bench 2.1
Agent Tasks
69.3#10 / 23Tier 310FB 20262026-07
RSI Index
Agent TasksNumerical
——Tier 310FB 2026Pending
Time Horizon Index
ForensicAgent Tasks
1.7#5 / 5Tier 310FB 20262026-07
ReverseEngBench
Forensic
——Tier 310FB 2026Pending
Tax Agent Bench
ForensicAgent Tasks
——Tier 310FB 2026Pending
Big Finance Bench
ForensicDocument QA
——Tier 310FB 2026Pending
GDPval-MM
Document QANumerical
——Tier 310FB 2026Pending
BankerToolBench
Agent Tasks
——Tier 310FB 2026Pending
GDPval-Rubrics
Forensic
——Tier 310FB 2026Pending
PRBench-Finance
NumericalForensic
——Tier 310FB 2026Pending
CorpFin
ForensicVerification
71.3#4 / 13Tier 220FB 20262026-08
Contents.md
Model info
OrganisationMeta
Release date2026-07-09
LicenseProprietary
Context window1M tokens
Open weightNo
FB Score breakdown
Finance Agent×30 = 17.2
VALS Index×25 = 13.7
MortgageTax×20 = 13.2
TaxEval v2×20 = 15.9
Code Migration×10 = 3.1
EMB×10 = 5.6
Legal Research×10 = 3.8
MedScribe×10 = 8.9
SAGE×10 = 4.6
Public Benefits×10 = 6.1
Vibe Code Bench×10 = 7.2
Harvey Legal×10 = 2.0
GPQA Diamond×15 = 13.7
LiveCodeBench×10 = 8.6
LegalBench×10 = 8.5
MMLU Pro×15 = 13.3
MMMU×10 = 8.7
ProgramBench×10 = 0.0
SkillsBench×10 = 5.9
SWE-bench×20 = 16.4
Terminal-Bench×10 = 6.9
Time Horizon×10 = 0.2
CorpFin×20 = 14.3
FB Score (weighted avg)62.8
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Evaluation notes
Scores reflect median of 3 runs per task at temperature 0.0 with 0-shot prompting. PAVE evaluation conducted by FinanceBenchmark. Other scores sourced from latest published arXiv papers.