Luma Payroll Gym
← Heatmap / Gemini 3.1 Flash Lite · Task 63
Gemini 3.1 Flash Lite · Single-turn · Task 63 (Calculation, at the upper bracket line) Mean -40.0%
Field Expected Rollout #1 (-40%) Rollout #2 (-40%) Rollout #3 (-40%)
decision calculate calculate calculate calculate
currency LCR LCR LCR LCR
gross pay 4093.39 4093.39 4093.39 4093.39
employee contribution 245.60 245.60 245.60 245.60
allowed deduction 247.81 247.81 247.81 247.81
taxable pay 3599.98 3599.98 3599.98 3599.98
income tax 324.00 455.99 383.99 456.00
net pay 3275.98 3143.99 3215.99 3143.98
clauses R1 R2 R3 R4 R5 R6 R1 R2 R3 R4 R5 R6 R1 R2 R3 R4 R5 R6 R1 R2 R3 R4 R5 R6
Prompt
Process this monthly payroll record under the supplied rulebook. Return the R6 or R7 JSON answer.
Source documents: {"c9a494472e6b6cd2-payroll": {"kind": "payroll", "record": {"gross_pay": "4093.39", "payroll_month": "2026-06", "allowed_deduction": "247.81"}}}
Authoritative case reference schedule: {"first-half": {"rate": "0.06", "cap": "5000.00", "deduction": "400.00", "free": "900.00", "upper": "3600.00", "middle_rate": "0.12", "upper_rate": "0.24"}, "second-half": {"rate": "0.05", "cap": "4000.00", "deduction": "400.00", "free": "1100.00", "upper": "3300.00", "middle_rate": "0.10", "upper_rate": "0.24"}}
Rollouts
Rollout #1 -40.0% wrong income tax · 1.3s · $0.0008
ComponentScoreClauses
decision 100.0% R1 R2 R3 R4 R5 R6
exact 0.0% R1 R2 R3 R4 R5 R6
field accuracy 50.0% R1 R2 R3 R4 R5 R6
citations 100.0% R1 R2 R3 R4 R5 R6
Assistant
{
  "decision": "calculate",
  "currency": "LCR",
  "gross_pay": "4093.39",
  "employee_contribution": "245.60",
  "allowed_deduction": "247.81",
  "taxable_pay": "3599.98",
  "income_tax": "455.99",
  "net_pay": "3143.99",
  "clauses": ["R1", "R2", "R3", "R4", "R5", "R6"]
}
Rollout #2 -40.0% wrong income tax · 1.0s · $0.0008
ComponentScoreClauses
decision 100.0% R1 R2 R3 R4 R5 R6
exact 0.0% R1 R2 R3 R4 R5 R6
field accuracy 50.0% R1 R2 R3 R4 R5 R6
citations 100.0% R1 R2 R3 R4 R5 R6
Assistant
{
  "decision": "calculate",
  "currency": "LCR",
  "gross_pay": "4093.39",
  "employee_contribution": "245.60",
  "allowed_deduction": "247.81",
  "taxable_pay": "3599.98",
  "income_tax": "383.99",
  "net_pay": "3215.99",
  "clauses": ["R1", "R2", "R3", "R4", "R5", "R6"]
}
Rollout #3 -40.0% wrong income tax · 1.0s · $0.0008
ComponentScoreClauses
decision 100.0% R1 R2 R3 R4 R5 R6
exact 0.0% R1 R2 R3 R4 R5 R6
field accuracy 50.0% R1 R2 R3 R4 R5 R6
citations 100.0% R1 R2 R3 R4 R5 R6
Assistant
{
  "decision": "calculate",
  "currency": "LCR",
  "gross_pay": "4093.39",
  "employee_contribution": "245.60",
  "allowed_deduction": "247.81",
  "taxable_pay": "3599.98",
  "income_tax": "456.00",
  "net_pay": "3143.98",
  "clauses": ["R1", "R2", "R3", "R4", "R5", "R6"]
}