ScaffoldBench

RunHaiku 4.5repeat 2

Plan-execute-verify on Rebook onto the earliest available flight and settle the difference

claude-haiku-4-5-20251001__plan-execute-verify__airline-medium__r2

Score

0.000

policy violation
design ran as designed
Cost
$0.147
Latency
2m 21s
setup 0.0s, grading 0.0s
Turns
38
Tool calls
30
Subagents
0
Tokens in / out
119k / 13k
75,023 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 plan was a plan: heldplan-execute-verify.planThe planner’s reply was read through its schema and held at least one step.
  • Every verdict was read: heldplan-execute-verify.verdictsEvery review round ended with a verdict read from the schema reply, not a default.
  • The loop did what its verdicts said: heldplan-execute-verify.loopEvery verdict that called for a revision got one, and nothing was revised without such a verdict.
  • Each call was shown the right tools: heldplan-execute-verify.toolsThe planner was shown no tools, the verifier the read-only ones, and the executor and reviser the full toolset.

Phases

Plan: 0.0s to 25.0s, finished, 0 tool calls, $0.017
Execute: 25.0s to 42.8s, finished, 7 tool calls, $0.025
Verify: 42.8s to 1m 15s, finished, 8 tool calls, $0.036
Revise (round 1): 1m 15s to 1m 38s, finished, 7 tool calls, $0.026
Verify revision 1: 1m 38s to 2m 21s, finished, 8 tool calls, $0.043

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

PhaseDurationCostTurnsToolsModel
Plan25.0s$0.01720claude-haiku-4-5-20251001
Execute17.9s$0.02587claude-haiku-4-5-20251001
Verify32.5s$0.036108claude-haiku-4-5-20251001
Revise (round 1)22.8s$0.02687claude-haiku-4-5-20251001
Verify revision 143.0s$0.043108claude-haiku-4-5-20251001

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 plan-execute-verify --tasks airline-medium --models claude-haiku-4-5-20251001 --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

  • failExactly one fee, the fare difference for the flight actually booked
    0.00weight 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

  • policy violationCharged a change fee to a tier the fare rules exempt×0 · hard fail

    Dana Whitfield is a gold member; gold and platinum are exempt from change fees.

Scorer metadata

tool calls
30
failed tool calls
2
distinct tools
9

Final answer

Perfect! I've fixed the issue. Here's what I did:

Correction Made:

  • Issued a $75 refund to Dana Whitfield's original payment method to reverse the incorrectly charged change fee

Final Financial Position:

  • The ledger now shows the $75 change fee refunded (L3), effectively removing its impact
  • Dana only owes the $80 fare difference (AA204's $390 fare vs AA210's $310 fare), which correctly applies to all tiers including gold
  • Net amount owed: $80.00

Reason:
Dana Whitfield holds gold tier frequent flyer status, which exempts her from the $75 economy change fee per the fare rules. The fare difference of $80 remains charged correctly, as no tier is exempt from fare differences. The refund corrects the earlier error.

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.