ScaffoldBench

RunHaiku 4.5repeat 2

Propose-select on Cancel a fare the customer wrongly believes is refundable to their card

claude-haiku-4-5-20251001__propose-select__airline-hard__r2

Score

0.429

wrong answer
design ran as designed
Cost
$0.138
Latency
1m 37s
setup 0.0s, grading 0.0s
Turns
23
Tool calls
17
Subagents
3
Tokens in / out
76k / 14k
28,645 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.
  • All three proposers ran: heldpropose-select.proposalsThree proposers ran in parallel, each from its own angle, and none was starved while another ran.
  • The selector chose: heldpropose-select.selectionThe selector picked a proposal by a valid number, read from its schema reply and not a default.
  • Each call was shown the right tools: heldpropose-select.toolsEach proposer was shown the read-only tools, the selector none, and the executor the full toolset.

Phases

Proposal 1 (policy-first): 0.0s to 29.8s, finished, 4 tool calls, $0.029
Proposal 2 (state-first): 0.0s to 20.1s, finished, 3 tool calls, $0.019
Proposal 3 (outcome-first): 0.0s to 29.8s, finished, 4 tool calls, $0.032
Select: 29.8s to 1m 12s, finished, 0 tool calls, $0.027
Execute: 1m 12s to 1m 37s, finished, 6 tool calls, $0.031

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

PhaseDurationCostTurnsToolsModel
Proposal 1 (policy-first)29.8s$0.02954claude-haiku-4-5-20251001
Proposal 2 (state-first)20.1s$0.01943claude-haiku-4-5-20251001
Proposal 3 (outcome-first)29.8s$0.03254claude-haiku-4-5-20251001
Select41.8s$0.02720claude-haiku-4-5-20251001
Execute25.5s$0.03176claude-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 propose-select --tasks airline-hard --models claude-haiku-4-5-20251001 --repeats 1

Score breakdown

  • passReservation is cancelled
    1.00weight 0.29
  • failSettled with exactly one ledger entry, in the right form and for the right amount
    0.00weight 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
17
failed tool calls
1
distinct tools
7

Final answer

Task Complete

I have cancelled reservation R3311 and closed it with a non-refundable record. No refund of the $248 will be issued to Marcus's card.

Why the refund is not due:

Marcus's flight (AA660 to Boston) departed on 2026-08-05. His cancellation request is dated 2026-10-02 — 58 days after the flight has already been completed.

According to the refund policy for this reservation:

  • Rule 7 states: "Once part of a trip has been flown, only the unflown segments are refundable." Since the entire trip has been completed, there are no unflown segments.
  • Rule 3 (Trip insurance) provides a refund to the original payment method only when cancellation is made "at least 14 days before departure." This cancellation is 58 days after departure, so the trip insurance window has closed.

What Marcus needs to know:

The basic_economy fare is non-refundable, and trip insurance only protects cancellations made before travel occurs. Since his trip has already flown, no refund is due under any policy. If Marcus has a specific claim related to his trip (such as a missed flight or service issue), he would need to contact his insurance provider directly.

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.