ScaffoldBench

RunOpus 5.5repeat 1

Propose-select on Redirect the order that has not shipped

claude-opus-5-5__propose-select__ecommerce-easy__r1

Score

1.000

passed
design ran as designed
Cost
$0.284
Latency
44.3s
setup 0.0s, grading 0.0s
Turns
24
Tool calls
18
Subagents
3
Tokens in / out
67k / 5.8k
39,169 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 14.5s, finished, 4 tool calls, $0.054
Proposal 2 (state-first): 0.0s to 14.9s, finished, 4 tool calls, $0.055
Proposal 3 (outcome-first): 0.0s to 13.7s, finished, 4 tool calls, $0.053
Select: 14.9s to 28.4s, finished, 0 tool calls, $0.061
Execute: 28.4s to 44.3s, finished, 6 tool calls, $0.060

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

PhaseDurationCostTurnsToolsModel
Proposal 1 (policy-first)14.5s$0.05454claude-opus-5-5
Proposal 2 (state-first)14.9s$0.05554claude-opus-5-5
Proposal 3 (outcome-first)13.7s$0.05354claude-opus-5-5
Select13.4s$0.06120claude-opus-5-5
Execute15.9s$0.06076claude-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-easy --models claude-opus-5-5 --repeats 1

Score breakdown

  • passThe order that has not shipped carries the new address
    1.00weight 0.43

    O-1001 address: 7 Quarry Rise, Sheffield S11 8XZ, UK

  • passThe edit did not spill onto the order already in transit
    1.00weight 0.29
  • passLooked up which order was still open before editing one
    1.00weight 0.14
  • passChecked the state of the order already in transit
    1.00weight 0.14

Penalties

No penalties were applied.

Scorer metadata

tool calls
18
failed tool calls
0
distinct tools
4

Final answer

I've put Dana Whitfield's new address on O-1001, the order that hadn't gone out. The order in transit, O-1002, is unchanged.

O-1001 (not yet shipped): the shipping address changed from 12 Alder Lane, Bristol BS1 4TR, UK to 7 Quarry Rise, Sheffield S11 8XZ, UK. Before changing it I checked that the order and both its lines were still pending with no ship date. Reading the order again afterwards showed the new address, and nothing else had changed:

  • It is still pending.
  • It still has the same two lines: L1 (one P-KEY) and L2 (two P-CAB).
  • It shows 16700¢ paid and nothing refunded.

O-1002 (in transit): I made no changes. It shipped on 2026-07-07, and store rules say a shipped order's address must never change because the shipping record has to stay accurate. Reading it again afterwards showed it still going to 88 Old Mill Road, Bristol BS3 2QQ, UK, still shipped with the same 2026-07-07 ship date, and nothing refunded.

You may want to tell Dana that O-1002 is still on its way to 88 Old Mill Road. If she can't receive it there, she'll need to ask the carrier to redirect it. That can't be done by changing the order.

There were no refunds, cancellations or stock changes, and I didn't touch her customer record. The store system's date is 2026-07-25 while today is 2026-10-05, but no time limit applies to an address change, so it made no difference.

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.