ScaffoldBench

RunOpus 5.5repeat 1

Propose-select on Cancel one line of a multi-line order

claude-opus-5-5__propose-select__ecommerce-medium__r1

Score

1.000

passed
design ran as designed
Cost
$0.271
Latency
46.8s
setup 0.0s, grading 0.0s
Turns
26
Tool calls
20
Subagents
3
Tokens in / out
83k / 6.8k
59,569 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 17.3s, finished, 4 tool calls, $0.044
Proposal 2 (state-first): 0.0s to 18.9s, finished, 5 tool calls, $0.051
Proposal 3 (outcome-first): 0.0s to 17.5s, finished, 5 tool calls, $0.048
Select: 18.9s to 32.8s, finished, 0 tool calls, $0.059
Execute: 32.8s to 46.8s, finished, 6 tool calls, $0.069

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

PhaseDurationCostTurnsToolsModel
Proposal 1 (policy-first)17.3s$0.04454claude-opus-5-5
Proposal 2 (state-first)18.9s$0.05165claude-opus-5-5
Proposal 3 (outcome-first)17.5s$0.04865claude-opus-5-5
Select13.9s$0.05920claude-opus-5-5
Execute14.0s$0.06976claude-opus-5-5

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 ecommerce-medium --models claude-opus-5-5 --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
20
failed tool calls
0
distinct tools
7

Final answer

I cancelled the wireless mouse on Marcus Ade's order O-2003, refunded it to his card, and checked that the rest of the order is unchanged and will still ship.

  1. Cancelled the mouse line (L1, 2 units). It hadn't shipped, so it's a cancellation, not a return. Cancelling didn't issue a refund or put any stock back, so I did both next.
  2. Refunded 7,350¢ to his card (refund RF-1). That's what he actually paid for the mouse after the MOUSE25 discount. The full price would be 9,800¢, but a refund can't be more than what he paid for the line.
  3. Put the 2 mice back in stock. Stock went from 30 to 32. The mouse line was reserved for this order, not backordered, so stock had been set aside for it.

  4. Checked the order again afterwards:

    • The mouse line is cancelled, with 7,350¢ refunded to card.
    • The order shows 7,350¢ refunded out of 19,950¢ paid.
    • The order is still pending, and the USB-C hub and the 3 cables haven't changed.

I didn't touch anything else: the shipping address, his store credit, his other order (O-2001), and all other products are as they were. I found nothing that conflicted with the plan or the store rules.

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.