ScaffoldBench

RunOpus 5.5repeat 2

Orchestrator-workers on Add checked bags and collect the right fee

claude-opus-5-5__orchestrator-workers__airline-easy__r2

Score

1.000

passed
design ran as designed
Cost
$0.122
Latency
37.1s
setup 0.0s, grading 0.0s
Turns
12
Tool calls
8
Subagents
1
Tokens in / out
43k / 2.8k
32,545 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 task was decomposed: heldorchestrator-workers.decompositionThe orchestrator’s reply was read through its schema and held at least one subtask.
  • The fan-out happened: heldorchestrator-workers.fan-outEvery subtask got a worker, every worker ran, and the recorded subagent count matches.
  • The synthesis wrote the answer: heldorchestrator-workers.synthesisThe final answer came from the synthesis call, not from a worker’s report standing in for it.
  • Each call was shown the right tools: heldorchestrator-workers.toolsThe orchestrator and the synthesis were shown no tools and every worker the task’s full toolset.

Phases

Decompose: 0.0s to 7.8s, finished, 0 tool calls, $0.028
Worker 1: all: 7.8s to 26.9s, finished, 8 tool calls, $0.061
Synthesize: 26.9s to 37.1s, finished, 0 tool calls, $0.032

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

PhaseDurationCostTurnsToolsModel
Decompose7.8s$0.02820claude-opus-5-5
Worker 1: all19.2s$0.06198claude-opus-5-5
Synthesize10.2s$0.03210claude-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 orchestrator-workers --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
8
failed tool calls
0
distinct tools
8

Final answer

R1042 is updated: Rosa Mendel now has 3 checked bags, and $45.00 was charged for them. This comes from the worker's report; I had no tools to check the reservation or ledger myself.

What was done

  • Bags: Rosa had 1 checked bag and now has 3. That is the most one reservation can hold, so she can't add any more.
  • Free allowance: She gets 2 bags free, 1 for her economy cabin and 1 for her silver frequent-flyer status.
  • Fee: Her original bag and the first new bag are free. The third bag is the only one over the allowance, so it was charged at the published $45.00 rate for a first chargeable bag. The $75.00 second-extra-bag rate doesn't apply.
  • Ledger: One baggage_fee entry for $45.00 was recorded as L1. The worker reports nothing was on the ledger before.

What to tell Rosa
She pays $45 rather than $120 because two of her three bags are free. One is free with her economy fare and one with her silver status. The worker's suggested wording put both free bags down to silver status, which is not quite right.

One thing to check
The worker saw two different "today" dates:

  • The environment showed 2026-10-06, which would put her flight AS420 (San Francisco to Seattle, 2026-08-11) in the past.
  • The airline system showed 2026-07-28, which makes the flight upcoming. The flight also still shows as scheduled.

The worker went by the airline system date. That is reasonable, but if 2026-10-06 is the real current date, she would be adding bags to a flight that has already flown. In that case the $45.00 charge would need another look.

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.