ScaffoldBench

RunHaiku 4.5repeat 1

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

claude-haiku-4-5-20251001__plan-execute-verify__airline-cancellation-queue__r1

Score

0.471

wrong answer
design ran as designed
Cost
$0.305
Latency
4m 19s
setup 0.0s, grading 0.0s
Turns
131
Tool calls
122
Subagents
0
Tokens in / out
475k / 27k
405,802 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 40.5s, finished, 0 tool calls, $0.037
Execute: 40.5s to 2m 4s, finished, 61 tool calls, $0.105
Verify: 2m 4s to 2m 52s, finished, 24 tool calls, $0.058
Revise (round 1): 2m 52s to 3m 40s, finished, 20 tool calls, $0.052
Verify revision 1: 3m 40s to 4m 19s, finished, 17 tool calls, $0.053

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

PhaseDurationCostTurnsToolsModel
Plan40.5s$0.03730claude-haiku-4-5-20251001
Execute1m 23s$0.1056261claude-haiku-4-5-20251001
Verify48.8s$0.0582624claude-haiku-4-5-20251001
Revise (round 1)47.2s$0.0522120claude-haiku-4-5-20251001
Verify revision 139.1s$0.0531917claude-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
  • passR7111 closed out with exactly one entry of the right kind, method and amount
    1.00weight 0.06

    expected refund/original_payment 30000; ledger got refund/original_payment 30000

  • 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
122
failed tool calls
2
distinct tools
13

Final answer

Excellent! All open cancellation requests have been successfully processed. Here's the summary:

Summary of Completed Cancellation Requests

Q-410 (R7111 - Wren Ashby):

  • Status: Cancelled ✓
  • Refund: $300.00 returned to Amex ending 6402 (full fare, no cancellation fee)
  • Reason: Platinum frequent-flyer status waives cancellation fees
  • Request resolved with explanation to customer

Q-412 (R7112 - Zoe Clark):

  • Status: Cancelled ✓
  • Refund: $240.00 returned to Visa ending 3358 ($290 fare - $50 cancellation fee)
  • Reason: Silver tier is not exempt from cancellation fee; $50 deducted per economy fare rules
  • Request resolved with explanation to customer

Both reservations were cancelled with funds settled to the original payment instruments (both active), and both customers have been notified of their cancellations and refund amounts. The remaining open request (Q-407) is a flight change request, which is outside the scope of the cancellation task.

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.