ScaffoldBench

RunSonnet 5.5repeat 2

Plan-execute-verify on Consolidate duplicate CRM reports

claude-sonnet-5-5__plan-execute-verify__support-medium__r2

Score

1.000

passed
design ran as designed
Cost
$0.190
Latency
1m 7s
setup 0.0s, grading 0.0s
Turns
52
Tool calls
44
Subagents
0
Tokens in / out
154k / 7.2k
125,104 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 9.0s, finished, 0 tool calls, $0.012
Execute: 9.0s to 31.1s, finished, 16 tool calls, $0.067
Verify: 31.1s to 44.8s, finished, 11 tool calls, $0.040
Revise (round 1): 44.8s to 56.6s, finished, 7 tool calls, $0.038
Verify revision 1: 56.6s to 1m 7s, finished, 10 tool calls, $0.033

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

PhaseDurationCostTurnsToolsModel
Plan9.0s$0.01220claude-sonnet-5-5
Execute22.2s$0.0671716claude-sonnet-5-5
Verify13.6s$0.0401311claude-sonnet-5-5
Revise (round 1)11.9s$0.03887claude-sonnet-5-5
Verify revision 110.9s$0.0331210claude-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 plan-execute-verify --tasks support-medium --models claude-sonnet-5-5 --repeats 1

Score breakdown

  • passSurvivor carries the earliest SLA deadline of the merged set
    1.00weight 0.23

    sla_due_at=2026-03-17T12:40:00Z (expected 2026-03-17T12:40:00Z)

  • passBoth duplicate reports were merged into the earliest-created ticket
    1.00weight 0.23

    T-1053: status=merged, merged_into=T-1052; T-1054: status=merged, merged_into=T-1052

  • passThe engineering tracking ticket now points at the survivor
    1.00weight 0.15

    T-1061 links=[T-1052]

  • passSurvivor re-graded from the matrix for its widened impact scope
    1.00weight 0.15

    severity=sev2 (matrix says sev2)

  • passSurvivor assigned to the engineer on call for the owning rotation at its deadline
    1.00weight 0.15

    assignee=E-201 (expected E-201)

  • passEvery ticket folded in was read before the merge
    1.00weight 0.08

Penalties

No penalties were applied.

Scorer metadata

tool calls
44
failed tool calls
0
distinct tools
11

Final answer

I fixed the assignment problem on T-1052. Both issues were valid, and they came down to the same fault.

  • Assignee: T-1052 is assigned to E-201 Ines Kovac again. She is on call for business-apps, which owns CRM, when the 12:40Z deadline falls. I checked the rotation before changing it.
  • Escalation: escalated_to still shows E-101 Dana Whitfield, who is on call for platform-primary at 12:40Z. Platform-primary is the rotation the matrix names for sev2. The tools kept both values, so no workaround was needed. The status is still escalated.
  • Comment: I added a comment to T-1052 correcting my earlier note. It said having the ticket sit with E-101 was acceptable, and it wasn't.
  • Unchanged: The merge, the sev2 grade, the 12:40Z deadline, T-1055 and T-1061 are as they were.

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.