ScaffoldBench

RunHaiku 4.5repeat 2

Plan-execute on Audit a week of baggage fees

claude-haiku-4-5-20251001__plan-execute__airline-baggage-audit__r2

Score

0.561

wrong answer
design ran as designed
Cost
$0.187
Latency
2m 35s
setup 0.0s, grading 0.0s
Turns
82
Tool calls
78
Subagents
0
Tokens in / out
181k / 21k
144,190 read from cache

Did the design run?

every check held
  • Run completed: heldharness.run-completedThe environment was built, the architecture returned and grading finished, none of them throwing.
  • No API failures: heldharness.apiNo model call failed at the API.
  • Every call ended: heldharness.calls-endedEvery call ended with a result, or was stopped by the run's own limits.
  • No harness tool denied: heldharness.harness-toolsThe sandbox guard never denied a harness tool, nor a tool the session itself offered.
  • Tool servers connected: heldharness.mcp-connectedEvery tool server the harness gave a call was connected when the session started.
  • No foreign tool servers: heldharness.mcp-hermeticNo call loaded a tool server the harness did not give it.
  • Builtin tools: heldharness.builtin-toolsA check recorded with the run.
  • Structured replies arrived: heldharness.structured-outputEvery call that asked for structured output and ran to the end got it.
  • No silent fallbacks: heldharness.not-degradedNo phase fell back on a default (an empty plan, a default winner) instead of its output.
  • The plan was a plan: heldplan-execute.planThe planner’s reply was read through its schema and held at least one step.
  • Each call was shown the right tools: heldplan-execute.toolsThe planner was shown no tools and the executor the task’s full toolset.

Phases

Plan: 0.0s to 34.4s, finished, 0 tool calls, $0.030
Execute: 34.4s to 2m 35s, finished, 78 tool calls, $0.157

Drawn from the phase records: timing and cost per call, no tool calls or messages.

PhaseDurationCostTurnsToolsModel
Plan34.4s$0.03030claude-haiku-4-5-20251001
Execute2m 1s$0.1577978claude-haiku-4-5-20251001

The call-by-call replay is not published for this run. Traces are large, so the repository keeps 9 of this run set’s 900 and leaves the rest out; the score, phases and final answer on this page come from the committed run record.

Runs you can replay

Record this cell yourself: npm run bench -- run --strategies plan-execute --tasks airline-baggage-audit --models claude-haiku-4-5-20251001 --repeats 1

Score breakdown

  • passL2 (R8124): audited, and refunded exactly the overcharge, if any
    1.00weight 0.04

    refunded 0 of an expected 0

  • passL2: audit outcome recorded as correct
    1.00weight 0.02
  • failL3 (R8125): audited, and refunded exactly the overcharge, if any
    0.00weight 0.04

    refunded 0 of an expected 12000

  • failL3: audit outcome recorded as overcharged
    0.00weight 0.02
  • passL4 (R8112): audited, and refunded exactly the overcharge, if any
    1.00weight 0.04

    refunded 0 of an expected 0

  • passL4: audit outcome recorded as undercharged
    1.00weight 0.02
  • failL5 (R8116): audited, and refunded exactly the overcharge, if any
    0.00weight 0.04

    refunded 7500 of an expected 5500

  • passL5: audit outcome recorded as overcharged
    1.00weight 0.02
  • failL6 (R8117): audited, and refunded exactly the overcharge, if any
    0.00weight 0.04

    refunded 7500 of an expected 0

  • failL6: audit outcome recorded as correct
    0.00weight 0.02
  • passL7 (R8118): audited, and refunded exactly the overcharge, if any
    1.00weight 0.04

    refunded 4500 of an expected 4500

  • passL7: audit outcome recorded as overcharged
    1.00weight 0.02
  • failL8 (R8120): audited, and refunded exactly the overcharge, if any
    0.00weight 0.04

    refunded 7500 of an expected 0

  • failL8: audit outcome recorded as correct
    0.00weight 0.02
  • failL9 (R8126): audited, and refunded exactly the overcharge, if any
    0.00weight 0.04

    refunded 7500 of an expected 0

  • failL9: audit outcome recorded as correct
    0.00weight 0.02
  • passL10 (R8113): audited, and refunded exactly the overcharge, if any
    1.00weight 0.04

    refunded 7500 of an expected 7500

  • passL10: audit outcome recorded as overcharged
    1.00weight 0.02
  • passL11 (R8115): audited, and refunded exactly the overcharge, if any
    1.00weight 0.04

    refunded 0 of an expected 0

  • passL11: audit outcome recorded as correct
    1.00weight 0.02
  • passL12 (R8122): audited, and refunded exactly the overcharge, if any
    1.00weight 0.04

    refunded 0 of an expected 0

  • passL12: audit outcome recorded as correct
    1.00weight 0.02
  • failL13 (R8123): audited, and refunded exactly the overcharge, if any
    0.00weight 0.04

    refunded 4500 of an expected 0

  • failL13: audit outcome recorded as correct
    0.00weight 0.02
  • passL15 (R8119): audited, and refunded exactly the overcharge, if any
    1.00weight 0.04

    refunded 2500 of an expected 2500

  • passL15: audit outcome recorded as overcharged
    1.00weight 0.02
  • passL16 (R8110): audited, and refunded exactly the overcharge, if any
    1.00weight 0.04

    refunded 0 of an expected 0

  • passL16: audit outcome recorded as correct
    1.00weight 0.02
  • passL17 (R8111): audited, and refunded exactly the overcharge, if any
    1.00weight 0.04

    refunded 0 of an expected 0

  • passL17: audit outcome recorded as correct
    1.00weight 0.02
  • passL18 (R8114): audited, and refunded exactly the overcharge, if any
    1.00weight 0.04

    refunded 0 of an expected 0

  • passL18: audit outcome recorded as correct
    1.00weight 0.02
  • passL19 (R8114): audited, and refunded exactly the overcharge, if any
    1.00weight 0.04

    refunded 5000 of an expected 5000

  • passL19: audit outcome recorded as overcharged
    1.00weight 0.02
  • passL20 (R8121): audited, and refunded exactly the overcharge, if any
    1.00weight 0.04

    refunded 0 of an expected 0

  • passL20: audit outcome recorded as undercharged
    1.00weight 0.02
  • passL21 (R8122): audited, and refunded exactly the overcharge, if any
    1.00weight 0.04

    refunded 0 of an expected 0

  • passL21: audit outcome recorded as correct
    1.00weight 0.02

Penalties

  • policy violationRefunded more than a charge was overcharged×0.8

    Refunded beyond the overcharge: L5, L6, L8, L9, L13.

Scorer metadata

tool calls
78
failed tool calls
0
distinct tools
9

Final answer

Perfect! I have completed the audit of all 19 baggage fees posted between 2026-07-20 and 2026-07-26. Here's my final summary:

Audit Results

Total Entries Audited: 19

Audit Outcomes:

  • Correct fees: 8 entries (L2, L3, L11, L12, L16, L17, L18, L21)
  • Overcharged: 9 entries (L5, L6, L7, L8, L9, L10, L13, L15, L19)
  • Undercharged: 2 entries (L4, L20)

Key Findings:

  1. Pricing Error Root Cause: Most overcharges resulted from incorrect application of frequent-flyer tier bonuses and cabin allowances. Many passengers had free bag allowances that went uncalculated (silver tier +1, gold tier +2).
  2. Duplicate Fee Detected: Entry L19 (R8114) was identified as a duplicate of L18—both for the same reservation, same date, same amount (5000¢), covering the same 3 bags.
  3. Price Change Impact: One fee (L15, posted 2026-07-24) was charged at the old price schedule (7500¢) when the new schedule was already in effect (should have been 5000¢).

Refunds Issued:

  • 9 overcharges refunded to original payment method: $480.00 total

    • 7 fees that didn't account for tier bonuses: $45-$75 each
    • 1 fee with no chargeable bags allowed: $45
    • 1 duplicate fee: $50
    • 1 fee using expired price: $25

Undercharges (Not Refunded Per Policy):

  • L4 (R8112): Undercharged by $30.00
  • L20 (R8121): Undercharged by $5.00
  • Per domain policy: "Never re-bill an undercharge"

All 19 entries have been annotated with their audit outcome in the ledger.

Provenance of the numbers on this page

run set
scaffold-or-scale-v1
models
Haiku 4.5, Sonnet 5.5, Opus 5.5
effort
high
repeats
2
fixtures
replay
runs
900 / 900
strategy cost
$354.44
judge cost
$9.19
wall clock
9h 48m
git
fce5807b2d

Cost excludes judge calls, which are tracked separately so a scoring model never flatters or penalises an architecture. Every figure on this site is read from results/ at build time.