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/GPT-5.5
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GPT-5.5

Proprietary#2 on FB Leaderboard128K contextReleased 2026-0212 benchmarks evaluated
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72.2
FB Score
#2
Overall rank
FB Score72.2Rank #2
Best benchmark91.0%FinanceBench
PAVE overall71.0%Level 1-4
Benchmarks12 / 42Evaluated
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Score by domain

Verification
69.7%
Rank #12 of 33
Document QA
81.2%
Rank #1 of 45
Numerical
75.6%
Rank #12 of 32
Forensic
67.5%
Rank #7 of 45
Multi-domain
75.5%
Rank #4 of 8
Agent Tasks
56.1%
Rank #8 of 44
Performance profile
80%Verification69.7%Document QA81.2%Numerical75.6%Forensic67.5%Multi-domain75.5%Agent Tasks56.1%
PAVE - Level breakdownFull benchmark →
Level 1
95%
Deterministic aggregation
Level 2
72%
Multi-rule classification
Level 3
50%
Cross-scheme reconciliation
Level 4
66%
Strategic impact modelling
Benchmark results12 evaluated · 30 pending
BenchmarkScoreRankTierWeightSourceDate
Pave Interchange Fee Benchmark
VerificationForensic
71.0#3 / 9Tier 130FB 20262026-05
FinanceBench
Document QA
91.0#1 / 8Tier 220FB 20262026-04
FinBen
Multi-domain
79.0#3 / 8Tier 310FB 20262026-03
FinQA
Numerical
82.0#3 / 8Tier 220FB 20262026-03
ConvFinQA
Document QA
88.0#1 / 8Tier 220FB 20262026-04
Finance Agent Benchmark
Agent Tasks
51.8#25 / 44Tier 130FB 20262026-09
MultiHiertt
Numerical
76.0#4 / 8Tier 310FB 20262026-03
FinAuditing
ForensicCompliance
72.0#4 / 5Tier 310FB 20262026-04
VALS Index
VerificationNumericalAgent Tasks
——Tier 125FB 2026Pending
MortgageTax Benchmark
NumericalForensic
68.8#7 / 22Tier 220FB 20262026-09
TaxEval v2
VerificationForensic
——Tier 220FB 2026Pending
Code Migration
Agent Tasks
——Tier 310FB 2026Pending
CyberBench
Forensic
——Tier 310FB 2026Pending
Excel Modeling Benchmark
Document QAForensic
64.5#21 / 44Tier 310FB 20262026-09
Legal Research Bench
Document QAForensic
——Tier 310FB 2026Pending
MedCode
Verification
——Tier 310FB 2026Pending
MedScribe
Document QA
——Tier 310FB 2026Pending
ProofBench v1.1
NumericalVerification
——Tier 310FB 2026Pending
SAGE
Agent Tasks
——Tier 310FB 2026Pending
Public Benefits Bench
VerificationForensic
——Tier 310FB 2026Pending
Vibe Code Bench v1.1
Agent Tasks
——Tier 310FB 2026Pending
Harvey's Legal Agent
Agent TasksForensic
——Tier 310FB 2026Pending
GPQA Diamond
NumericalVerification
——Tier 215FB 2026Pending
IOI
Numerical
——Tier 310FB 2026Pending
LiveCodeBench
Agent Tasks
——Tier 310FB 2026Pending
LegalBench
Document QAForensic
——Tier 310FB 2026Pending
MMLU Pro
NumericalVerification
——Tier 215FB 2026Pending
MMMU
Document QANumerical
——Tier 310FB 2026Pending
ProgramBench
Agent Tasks
——Tier 310FB 2026Pending
SkillsBench
Agent Tasks
——Tier 310FB 2026Pending
SWE-bench
Agent Tasks
——Tier 220FB 2026Pending
Terminal-Bench 2.1
Agent Tasks
——Tier 310FB 2026Pending
RSI Index
Agent TasksNumerical
——Tier 310FB 2026Pending
Time Horizon Index
ForensicAgent Tasks
——Tier 310FB 2026Pending
ReverseEngBench
Forensic
——Tier 310FB 2026Pending
Tax Agent Bench
ForensicAgent Tasks
60.5#8 / 25Tier 310FB 20262026-09
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
68.4#9 / 13Tier 220FB 20262026-08
Contents.md
Model info
OrganisationOpenAI
Release date2026-02
LicenseProprietary
Context window128K tokens
Open weightNo
FB Score breakdown
Pave×30 = 21.3
FinanceBench×20 = 18.2
FinBen×10 = 7.9
FinQA×20 = 16.4
ConvFinQA×20 = 17.6
Finance Agent×30 = 15.5
MultiHiertt×10 = 7.6
FinAuditing×10 = 7.2
MortgageTax×20 = 13.8
EMB×10 = 6.5
Tax Agent×10 = 6.0
CorpFin×20 = 13.7
FB Score (weighted avg)72.2
Compare - all models
AClaude Opus 4.773.8%
OGPT-5.5THIS MODEL72.2%
OGPT-6 Sol71.1%
DDeepSeek V4 Pro70.1%
GGemini 3.1 Pro70.0%
OGPT-6 Luna70.0%
Compare vs Claude Opus 4.7 in full →
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.