ScaffoldBench

RunOpus 5.5repeat 1

Gated-execute on Add checked bags and collect the right fee

claude-opus-5-5__gated-execute__airline-easy__r1

Score

1.000

passed
design ran as designed
Cost
$0.186
Latency
40.7s
setup 0.0s, grading 0.0s
Turns
23
Tool calls
18
Subagents
2
Tokens in / out
70k / 2.8k
51,937 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.
  • Every state change was reviewed: heldgated-execute.reviewedEvery call that changed the world had been allowed by a review before it ran, counted from the world’s own journal.
  • Every decision was read: heldgated-execute.decisionsEvery review that ran to its end gave its decision through the schema; an unreadable one is a denial.
  • Each call was shown the right tools: heldgated-execute.toolsThe executor was shown the task’s full toolset and each reviewer the read-only tools.

Phases

Execute: 0.0s to 40.7s, finished, 8 tool calls, $0.088
Review 1: add_baggage: 11.2s to 24.7s, finished, 6 tool calls, $0.066
Review 2: charge_fee: 27.1s to 36.0s, finished, 4 tool calls, $0.032

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

PhaseDurationCostTurnsToolsModel
Execute40.7s$0.08898claude-opus-5-5
Review 1: add_baggage13.5s$0.06686claude-opus-5-5
Review 2: charge_fee8.9s$0.03264claude-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 gated-execute --tasks airline-easy --models claude-opus-5-5 --repeats 1

Score breakdown

  • passReservation holds three checked bags and is otherwise untouched
    1.00weight 0.43

    checked_bags=3, status=confirmed

  • passExactly one baggage fee, for the bags beyond the free allowance
    1.00weight 0.57

    expected 4500 cents for 1 chargeable bag(s), charged 4500

Penalties

No penalties were applied.

Scorer metadata

tool calls
18
failed tool calls
0
distinct tools
8

Final answer

I added two checked bags to Rosa Mendel's reservation R1042 (SFO→SEA, flight AS420 on 2026-08-11) and charged her $45.00.

  • Bags: she had 1 checked bag and now has 3, which is the most a reservation can hold.
  • Free allowance: she gets 2 free bags, 1 for her economy ticket plus 1 for her silver frequent-flyer status.
  • What she owes: her second bag is free. Her third bag is the only one over the allowance, so it costs the first-extra-bag price of $45. The $75 price would only apply to a second bag over the allowance, which she doesn't have.
  • Payment: the $45 is recorded as a single baggage fee (ledger entry L1). Nothing else on her booking was changed.

One thing to know: the system clock showed 2026-10-05, which would put her flight in the past. The booking system's own date is 2026-07-28, though, and the flight is still scheduled, so I treated the trip as upcoming.

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.