ScaffoldBench

RunOpus 5.5repeat 1

Plan-execute on Cancel a fare the customer wrongly believes is refundable to their card

claude-opus-5-5__plan-execute__airline-hard__r1

Score

1.000

passed
design ran as designed
Cost
$0.110
Latency
37.9s
setup 0.0s, grading 0.0s
Turns
12
Tool calls
9
Subagents
0
Tokens in / out
47k / 3.0k
39,218 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 15.4s, finished, 0 tool calls, $0.030
Execute: 15.4s to 37.9s, finished, 9 tool calls, $0.080

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

PhaseDurationCostTurnsToolsModel
Plan15.4s$0.03020claude-opus-5-5
Execute22.5s$0.080109claude-opus-5-5

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-hard --models claude-opus-5-5 --repeats 1

Score breakdown

  • passReservation is cancelled
    1.00weight 0.29
  • passSettled with exactly one ledger entry, in the right form and for the right amount
    1.00weight 0.57

    expected a single travel_credit entry of 24800 cents; ledger holds 1 entries

  • passThe cancelled seat went back into inventory
    1.00weight 0.14

Penalties

No penalties were applied.

Scorer metadata

tool calls
9
failed tool calls
0
distinct tools
7

Final answer

I cancelled R3311 and returned the full $248.00 to Marcus as travel credit, not to his card. The refund policy doesn't allow a card refund for this booking.

What I checked first

  • Reservation: R3311 belongs to Marcus Bell (P-1003). It was a basic economy booking on AA660 from SFO to BOS on 2026-08-05, with $248.00 paid. It was booked on 2026-04-11 and was still confirmed. The ledger had no entries.
  • Insurance: the record confirms he bought trip insurance.
  • Membership tier: he's a platinum member.
  • Flight: AA660 is still scheduled and hasn't flown.

The date doesn't match the plan. The plan said today is 2026-10-05, which would mean the flight had already gone. But the refund policy tool gives today as 2026-07-28, and the flight still shows as scheduled. So the flight is 8 days away and there's no no-show. I settled the booking using the airline system's date.

How the policy applies

  • The booking is more than 24 hours old, so the 24-hour full refund doesn't apply.
  • A basic economy fare isn't refundable on its own.
  • Trip insurance only pays back to the card if you cancel at least 14 days before departure. At 8 days, it turns the fare paid into travel credit instead, and no money goes back to the card.
  • There's normally a $50 cancellation fee, but platinum members don't pay it. So he gets the full $248.00.

What I did

  1. Cancelled R3311, which released his seat.
  2. Closed it out with one ledger entry (L1): $248.00 as travel credit.
  3. Read the booking and ledger again: R3311 shows as cancelled and L1 is recorded. I didn't change any other booking, passenger record or flight.

Message to Marcus:
"Your reservation R3311 (SFO→Boston, Aug 5) is cancelled. You're getting the full $248.00 as travel credit, not back on your card. Basic economy fares can't be refunded on their own. Your trip insurance pays back to your card only if you cancel at least 14 days before departure, and this cancellation came 8 days before. Inside that window, the insurance turns your fare into travel credit instead. Because you're a platinum member, the usual $50 cancellation fee doesn't apply, so you keep the full $248 as credit."

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.