ScaffoldBench

RunSonnet 5.5repeat 1

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

claude-sonnet-5-5__orchestrator-workers__airline-medium__r1

Score

1.000

passed
design ran as designed
Cost
$0.057
Latency
25.2s
setup 0.0s, grading 0.0s
Turns
11
Tool calls
7
Subagents
1
Tokens in / out
37k / 2.1k
27,102 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 6.7s, finished, 0 tool calls, $0.015
Worker 1: all: 6.7s to 20.1s, finished, 7 tool calls, $0.029
Synthesize: 20.1s to 25.2s, finished, 0 tool calls, $0.013

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

PhaseDurationCostTurnsToolsModel
Decompose6.7s$0.01520claude-sonnet-5-5
Worker 1: all13.4s$0.02987claude-sonnet-5-5
Synthesize5.1s$0.01310claude-sonnet-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-sonnet-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
7
failed tool calls
0
distinct tools
7

Final answer

Dana Whitfield's reservation R2087 has been moved from AA210 (17:40) to AA204, departing 09:05 on 2026-08-03. She stays in economy, and she owes $80.00 for the change. I'm relying on the worker's report here, since I had no tools to check the booking or ledger myself.

  • Why AA204: UA88 at 06:15 departs earlier but has no economy seats left. AA918 at 07:30 is cancelled. AA204 is the earliest flight still operating with an economy seat (4 left).
  • Change fee: The economy change fee is $75. Dana is gold tier, which is exempt, so no change fee was charged.
  • Fare difference: AA204 economy is $390 and she paid $310. The fare rules collect the full difference with no tier exemption, so $80.00 was charged as a single fare_difference ledger entry (L1).
  • Other records: The ledger had no earlier entries for this reservation. No other booking, passenger record or flight was changed.

The report doesn't mention any unfinished items or conflicts.

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.