ScaffoldBench

RunHaiku 4.5repeat 2

Plan-execute-verify on Work a cancellation queue where cash cannot be recalled

claude-haiku-4-5-20251001__plan-execute-verify__airline-cancellation-queue__r2

Score

0.443

wrong answer
design ran as designed
Cost
$0.312
Latency
4m 42s
setup 0.0s, grading 0.0s
Turns
146
Tool calls
137
Subagents
0
Tokens in / out
487k / 28k
416,221 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-verify.planThe planner’s reply was read through its schema and held at least one step.
  • Every verdict was read: heldplan-execute-verify.verdictsEvery review round ended with a verdict read from the schema reply, not a default.
  • The loop did what its verdicts said: heldplan-execute-verify.loopEvery verdict that called for a revision got one, and nothing was revised without such a verdict.
  • Each call was shown the right tools: heldplan-execute-verify.toolsThe planner was shown no tools, the verifier the read-only ones, and the executor and reviser the full toolset.

Phases

Plan: 0.0s to 36.4s, finished, 0 tool calls, $0.025
Execute: 36.4s to 2m 6s, finished, 59 tool calls, $0.098
Verify: 2m 6s to 3m 9s, finished, 39 tool calls, $0.081
Revise (round 1): 3m 9s to 3m 35s, finished, 15 tool calls, $0.034
Verify revision 1: 3m 35s to 4m 17s, finished, 15 tool calls, $0.047
Revise (round 2): 4m 17s to 4m 42s, finished, 9 tool calls, $0.027

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

PhaseDurationCostTurnsToolsModel
Plan36.4s$0.02520claude-haiku-4-5-20251001
Execute1m 29s$0.0986059claude-haiku-4-5-20251001
Verify1m 3s$0.0814139claude-haiku-4-5-20251001
Revise (round 1)25.8s$0.0341615claude-haiku-4-5-20251001
Verify revision 141.7s$0.0471715claude-haiku-4-5-20251001
Revise (round 2)25.2s$0.027109claude-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-verify --tasks airline-cancellation-queue --models claude-haiku-4-5-20251001 --repeats 1

Score breakdown

  • passR7101 cancelled
    1.00weight 0.03
  • passR7101 closed out with exactly one entry of the right kind, method and amount
    1.00weight 0.06

    expected refund/original_payment 27000; ledger got refund/original_payment 27000

  • passQ-401 resolved with a note to the customer
    1.00weight 0.01
  • passR7102 cancelled
    1.00weight 0.03
  • passR7102 closed out with exactly one entry of the right kind, method and amount
    1.00weight 0.06

    expected refund/original_payment 21000; ledger got refund/original_payment 21000

  • passQ-402 resolved with a note to the customer
    1.00weight 0.01
  • passR7103 cancelled
    1.00weight 0.03
  • passR7103 closed out with exactly one entry of the right kind, method and amount
    1.00weight 0.06

    expected refund/travel_credit 26000; ledger got refund/travel_credit 26000

  • passQ-403 resolved with a note to the customer
    1.00weight 0.01
  • passR7104 cancelled
    1.00weight 0.03
  • passR7104 closed out with exactly one entry of the right kind, method and amount
    1.00weight 0.06

    expected refund/original_payment 20000; ledger got refund/original_payment 20000

  • passQ-404 resolved with a note to the customer
    1.00weight 0.01
  • passR7105 cancelled
    1.00weight 0.03
  • passR7105 closed out with exactly one entry of the right kind, method and amount
    1.00weight 0.06

    expected non_refundable; ledger got non_refundable 0

  • passQ-405 resolved with a note to the customer
    1.00weight 0.01
  • passR7106 cancelled
    1.00weight 0.03
  • failR7106 closed out with exactly one entry of the right kind, method and amount
    0.00weight 0.06

    expected refund/travel_credit 19800; ledger got refund/travel_credit 24800

  • passQ-406 resolved with a note to the customer
    1.00weight 0.01
  • passR7108 cancelled
    1.00weight 0.03
  • passR7108 closed out with exactly one entry of the right kind, method and amount
    1.00weight 0.06

    expected refund/original_payment 12000; ledger got refund/original_payment 12000

  • passQ-408 resolved with a note to the customer
    1.00weight 0.01
  • passR7110 cancelled
    1.00weight 0.03
  • passR7110 closed out with exactly one entry of the right kind, method and amount
    1.00weight 0.06

    expected refund/travel_credit 32000; ledger got refund/travel_credit 32000

  • passQ-409 resolved with a note to the customer
    1.00weight 0.01
  • passR7111 cancelled
    1.00weight 0.03
  • failR7111 closed out with exactly one entry of the right kind, method and amount
    0.00weight 0.06

    expected refund/original_payment 30000; ledger got refund/original_payment 25000, refund/original_payment 5000

  • passQ-410 resolved with a note to the customer
    1.00weight 0.01
  • passR7112 cancelled
    1.00weight 0.03
  • passR7112 closed out with exactly one entry of the right kind, method and amount
    1.00weight 0.06

    expected refund/original_payment 24000; ledger got refund/original_payment 24000

  • passQ-412 resolved with a note to the customer
    1.00weight 0.01

Penalties

  • policy violationReturned more money than a booking was owed×0.5

    Overpaid: R7106.

Scorer metadata

tool calls
137
failed tool calls
2
distinct tools
13

Final answer

Final Answer

I have successfully fixed the overcharge issue for R7111:

Issue Corrected:

  • Passenger: Wren Ashby (P-2311) - Platinum tier
  • Error: A $50 cancellation service fee was incorrectly charged, but the refund policy explicitly waives this fee for platinum tier passengers
  • Correction: Issued a $50.00 refund to the original payment method (Amex ending 6402)

Final Refund Total: $300.00 (original fare) with no service fee deducted, as required for Platinum tier passengers

Actions Taken:

  1. ✅ Verified passenger tier (Platinum)
  2. ✅ Confirmed payment method is active
  3. ✅ Issued corrective refund of $50.00
  4. ✅ Notified passenger of the correction

The reservation is now properly settled with the correct refund amount according to the refund policy for Platinum frequent flyer members.

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.