ScaffoldBench

RunOpus 5.5repeat 2

Orchestrator-workers on Rebook onto the earliest available flight and settle the difference

claude-opus-5-5__orchestrator-workers__airline-medium__r2

Score

1.000

passed
design ran as designed
Cost
$0.119
Latency
37.8s
setup 0.0s, grading 0.0s
Turns
13
Tool calls
9
Subagents
1
Tokens in / out
46k / 3.0k
36,657 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 8.4s, finished, 0 tool calls, $0.020
Worker 1: all: 8.4s to 28.7s, finished, 9 tool calls, $0.072
Synthesize: 28.7s to 37.8s, finished, 0 tool calls, $0.026

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

PhaseDurationCostTurnsToolsModel
Decompose8.4s$0.02020claude-opus-5-5
Worker 1: all20.3s$0.072109claude-opus-5-5
Synthesize9.1s$0.02610claude-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-medium --models claude-opus-5-5 --repeats 1

Score breakdown

  • passReservation moved to the earliest flight with an available seat, same cabin
    1.00weight 0.43

    booked on AA204, expected AA204

  • passExactly one fee, the fare difference for the flight actually booked
    1.00weight 0.43

    fare difference owed on the booked flight: 8000 cents

  • passExactly one economy seat moved from the old flight to the new one
    1.00weight 0.14

Penalties

No penalties were applied.

Scorer metadata

tool calls
9
failed tool calls
0
distinct tools
9

Final answer

Dana Whitfield (R2087) is now on AA204, departing SFO at 09:05 on 2026-08-03 in economy, the cabin she was already booked in. She was charged $80.00 for the change.

Why AA204: It is the earliest flight that day with an economy seat that can be booked.

  • UA88 (06:15): no economy seats left.
  • AA918 (07:30): shows economy seats, but the flight is cancelled.
  • AA204 (09:05): scheduled, with 4 economy seats left. This was checked again just before the move.

What was done:

  1. Her booking was moved from AA210 (17:40) to AA204, still in economy. No money moved at this step.
  2. One ledger entry (L1) charged the $80.00 fare difference: the new $390.00 fare minus the $310.00 she paid. The economy fare rules collect fare increases in full, and no tier is exempt from that.
  3. The $75.00 change fee was waived. She is a gold member, and the rules exempt gold and platinum members, so no change-fee entry was made.

Her checked bag count (1) and her passenger record were not changed.

One thing to check: The dates don't agree. My session date is 2026-10-06, which would put this flight in the past. The airline system reports today as 2026-07-28 and shows both flights as scheduled, so the change was handled as an upcoming flight. If 2026-10-06 is the real date, this change and the $80.00 charge 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.