ScaffoldBench

RunHaiku 4.5repeat 2

Plan-execute-verify on Cancel one line of a multi-line order

claude-haiku-4-5-20251001__plan-execute-verify__ecommerce-medium__r2

Score

1.000

passed
design ran as designed
Cost
$0.060
Latency
59.8s
setup 0.0s, grading 0.0s
Turns
14
Tool calls
9
Subagents
0
Tokens in / out
37k / 6.0k
14,842 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 27.8s, finished, 0 tool calls, $0.016
Execute: 27.8s to 47.2s, finished, 6 tool calls, $0.030
Verify: 47.2s to 59.8s, finished, 3 tool calls, $0.014

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

PhaseDurationCostTurnsToolsModel
Plan27.8s$0.01620claude-haiku-4-5-20251001
Execute19.4s$0.03076claude-haiku-4-5-20251001
Verify12.6s$0.01453claude-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 ecommerce-medium --models claude-haiku-4-5-20251001 --repeats 1

Score breakdown

  • passThe mouse line is cancelled and refunded to the card for exactly what was paid
    1.00weight 0.38

    line L1: status=cancelled refundedCents=7350 method=card

  • passExactly the cancelled quantity went back into stock
    1.00weight 0.25

    P-MOU stock=32

  • passThe other lines of the order are still on their way
    1.00weight 0.25
  • passRead the order before changing it
    1.00weight 0.13

Penalties

No penalties were applied.

Scorer metadata

tool calls
9
failed tool calls
0
distinct tools
6

Final answer

Perfect! Task completed successfully. Here's what I did:

Summary

✅ Cancelled the wireless mouse line (L1) from order O-2003

  • 2 units of product P-MOU (Wireless Mouse) cancelled
  • Reason: Customer added item by mistake

✅ Restocked inventory

  • Restored 2 units of P-MOU back to stock
  • Inventory increased from 30 to 32 units

✅ Issued refund to card

  • Refund RF-1: 7,350 cents (the exact amount Marcus paid for the wireless mouse)
  • Method: Original payment method (card)

✅ Rest of order remains intact

  • Line L2 (USB Hub, 1 unit, £69.00) - Still pending
  • Line L3 (Cable, 3 units, £57.00) - Still pending
  • Order status: Pending (will ship as planned once processing)

The wireless mouse has been removed and refunded, while the remainder of the order will proceed to shipment normally.

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.