ScaffoldBench

RunHaiku 4.5repeat 1

Single on Add checked bags and collect the right fee

claude-haiku-4-5-20251001__single__airline-easy__r1

Score

0.429

wrong answer
design ran as designed
Cost
$0.026
Latency
17.8s
setup 0.0s, grading 0.0s
Turns
6
Tool calls
5
Subagents
0
Tokens in / out
21k / 1.6k
9,714 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.
  • Each call was shown the right tools: heldsingle.toolsThe agent was shown exactly the task’s tools, none missing and none extra.

The run, call by call

19 recorded events, folded into 10

1 call · 17.8s · $0.026

  • tool call
  • denied by the guard
  • tool returned an error
  • shown no tools (reasoning only)
  • lost its tools (server failed)
  • failed

Score breakdown

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

    checked_bags=3, status=confirmed

  • failExactly one baggage fee, for the bags beyond the free allowance
    0.00weight 0.57

    expected 4500 cents for 1 chargeable bag(s), charged 7500

Penalties

No penalties were applied.

Scorer metadata

tool calls
5
failed tool calls
0
distinct tools
5

Final answer

Perfect! I've successfully completed the task.

Summary:

  • Rosa Mendel's reservation R1042 has been updated from 1 checked bag to 3 checked bags
  • She has been charged $75.00 for the additional baggage

Why this amount:
Rosa's free baggage allowance is 2 bags (1 free bag included in economy cabin + 1 additional free bag for silver frequent flyer tier). Since she now has 3 checked bags total, only 1 bag exceeds her allowance, which costs $75.00 at the published rate for bags beyond the free allowance.

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.