ScaffoldBench

RunHaiku 4.5repeat 1

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

claude-haiku-4-5-20251001__plan-execute__airline-hard__r1

Score

1.000

passed
design ran as designed
Cost
$0.069
Latency
1m 32s
setup 0.0s, grading 0.0s
Turns
8
Tool calls
5
Subagents
0
Tokens in / out
36k / 9.2k
23,866 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.

The run, call by call

27 recorded events, folded into 14

2 calls · 1m 32s · $0.069

  • tool call
  • denied by the guard
  • tool returned an error
  • shown no tools (reasoning only)
  • lost its tools (server failed)
  • failed

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
5
failed tool calls
0
distinct tools
5

Final answer

Settlement Complete

Reservation R3311 has been cancelled. Here's how the refund settlement was applied:

Amount: $248.00 (his full fare)
Settlement method: Travel credit (not refund to card)
Cancellation service fee: Waived (platinum tier benefit)

Why travel credit instead of a refund to his card:

Your trip insurance does provide full recovery of the fare, but it operates under a time-based rule. The insurance pays out as:

  • Refund to original payment method if cancelled ≥14 days before departure
  • Travel credit if cancelled <14 days before departure

Your cancellation was processed 8 days before your 2026-08-05 departure, which falls within the latter window. Under this rule, your $248 fare converts to travel credit on your account instead of returning to your card.

Your platinum frequent flyer status also waived the $50 cancellation service fee that would normally apply.

Next steps: Marcus can use the $248 travel credit toward any future flight on this airline.

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.