ScaffoldBench

RunSonnet 5.5repeat 2

Plan-execute on Triage the weekend's queue on Monday morning

claude-sonnet-5-5__plan-execute__support-monday-triage__r2

Score

0.805

wrong answer
design ran as designed
Cost
$0.229
Latency
1m 8s
setup 0.0s, grading 0.0s
Turns
68
Tool calls
65
Subagents
0
Tokens in / out
192k / 10k
165,822 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.planThe planner’s reply was read through its schema and held at least one step.
  • Each call was shown the right tools: heldplan-execute.toolsThe planner was shown no tools and the executor the task’s full toolset.

Phases

Plan: 0.0s to 11.9s, finished, 0 tool calls, $0.023
Execute: 11.9s to 1m 8s, finished, 65 tool calls, $0.206

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

PhaseDurationCostTurnsToolsModel
Plan11.9s$0.02320claude-sonnet-5-5
Execute56.2s$0.2066665claude-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 --tasks support-monday-triage --models claude-sonnet-5-5 --repeats 1

Score breakdown

  • passT-2001 graded sev3
    1.00weight 0.02

    severity=sev3

  • passT-2001 due 2026-03-23T17:00:00Z
    1.00weight 0.02

    sla_due_at=2026-03-23T17:00:00Z

  • passT-2001 assigned to E-303
    1.00weight 0.02

    assignee=E-303

  • passT-2002 graded sev4
    1.00weight 0.02

    severity=sev4

  • passT-2002 due 2026-03-26T17:00:00Z
    1.00weight 0.02

    sla_due_at=2026-03-26T17:00:00Z

  • passT-2002 assigned to E-203
    1.00weight 0.02

    assignee=E-203

  • passT-2003 graded sev2
    1.00weight 0.02

    severity=sev2

  • failT-2003 due 2026-03-23T10:30:00Z
    0.00weight 0.02

    sla_due_at=2026-03-23T12:10:00Z

  • passT-2003 assigned to E-101
    1.00weight 0.02

    assignee=E-101

  • passT-2004 graded sev2
    1.00weight 0.02

    severity=sev2

  • passT-2004 due 2026-03-23T12:10:00Z
    1.00weight 0.02

    sla_due_at=2026-03-23T12:10:00Z

  • passT-2004 assigned to E-201
    1.00weight 0.02

    assignee=E-201

  • passT-2006 graded sev2
    1.00weight 0.02

    severity=sev2

  • passT-2006 due 2026-03-23T12:10:00Z
    1.00weight 0.02

    sla_due_at=2026-03-23T12:10:00Z

  • passT-2006 assigned to E-201
    1.00weight 0.02

    assignee=E-201

  • passT-2007 graded sev2
    1.00weight 0.02

    severity=sev2

  • passT-2007 due 2026-03-23T12:10:00Z
    1.00weight 0.02

    sla_due_at=2026-03-23T12:10:00Z

  • passT-2007 assigned to E-601
    1.00weight 0.02

    assignee=E-601

  • passT-2008 graded sev4
    1.00weight 0.02

    severity=sev4

  • passT-2008 due 2026-03-26T17:00:00Z
    1.00weight 0.02

    sla_due_at=2026-03-26T17:00:00Z

  • passT-2008 assigned to E-302
    1.00weight 0.02

    assignee=E-302

  • passT-2009 graded sev4
    1.00weight 0.02

    severity=sev4

  • passT-2009 due 2026-03-26T17:00:00Z
    1.00weight 0.02

    sla_due_at=2026-03-26T17:00:00Z

  • passT-2009 assigned to E-102
    1.00weight 0.02

    assignee=E-102

  • passT-2011 graded sev2
    1.00weight 0.02

    severity=sev2

  • passT-2011 due 2026-03-23T12:10:00Z
    1.00weight 0.02

    sla_due_at=2026-03-23T12:10:00Z

  • passT-2011 assigned to E-201
    1.00weight 0.02

    assignee=E-201

  • passT-2013 graded sev2
    1.00weight 0.02

    severity=sev2

  • passT-2013 due 2026-03-23T12:10:00Z
    1.00weight 0.02

    sla_due_at=2026-03-23T12:10:00Z

  • passT-2013 assigned to E-303
    1.00weight 0.02

    assignee=E-303

  • failT-2015 graded sev1
    0.00weight 0.02

    severity=unset

  • failT-2015 due 2026-03-23T09:10:00Z
    0.00weight 0.02

    sla_due_at=not set

  • failT-2015 assigned to E-201
    0.00weight 0.02

    assignee=unassigned

  • failT-2016 graded sev4
    0.00weight 0.02

    severity=unset

  • failT-2016 due 2026-03-26T17:00:00Z
    0.00weight 0.02

    sla_due_at=not set

  • failT-2016 assigned to E-302
    0.00weight 0.02

    assignee=unassigned

  • passT-2012 merged into T-2003
    1.00weight 0.02
  • failT-1999 merged into T-2003
    0.00weight 0.02
  • passT-2005 merged into T-2004
    1.00weight 0.02
  • passT-2010 closed as not a service request
    1.00weight 0.02
  • passT-2014 closed as not a service request
    1.00weight 0.02

Penalties

No penalties were applied.

Scorer metadata

tool calls
65
failed tool calls
0
distinct tools
15

Final answer

All 14 tickets from the new queue are triaged. I made no pages and no escalations, and I opened no incident.

Closed as not service requests

  • T-2010: marketing email from SyncFlow.
  • T-2014: automatic out-of-office reply.

Merged duplicates

  • T-2012 into T-2003: both are Payments builds failing, and T-2003 was created first. The merged ticket is sev2 (build-pipeline, department) and is assigned to E-101.
  • T-2005 into T-2004: both are CRM search errors (KB-23), and T-2004 was created first. The merged ticket is sev2 (crm, department) and is assigned to E-201.

Neither ticket in either pair had a deadline of its own, so each merged ticket got triage time plus 240 minutes: 2026-03-23 12:10Z.

Other tickets

TicketSeverityDueAssignee
T-2001 (Berlin VPN drops)sev3Mon 17:00ZE-303
T-2002 (saved CRM filter)sev4Thu 26 Mar 17:00ZE-203
T-2006 (payslip tax code)sev2Mon 12:10ZE-201
T-2007 (phishing report)sev2Mon 12:10ZE-601
T-2008 (VPN client update)sev4Thu 26 Mar 17:00ZE-302
T-2009 (build logs slow)sev4Thu 26 Mar 17:00ZE-102
T-2011 (overtime import)sev2Mon 12:10ZE-201
T-2013 (Lisbon VPN)sev2Mon 12:10ZE-303
  • T-2006: the matrix says sev3, but the KB-55 payroll amendment (20–31 March) makes single-user payroll tickets sev2.
  • T-2007: the requester typed their password into a fake VPN page, so it is a security report. That makes it sev2 under security-oncall, whatever the matrix says for VPN single-user tickets.
  • Business hours: the desk opens at 09:00 and 25 March is a holiday. So the sev3 and sev4 clocks start at 09:00, and the sev4 deadline lands on Thursday.
  • Leave cover: E-301 is on leave today. The network-primary tickets (T-2001, T-2013) went to the backup rotation's on-call engineer, E-303. T-2002 fell on E-202's leave on Thursday, so business-apps-secondary's E-203 took it.

Judgement calls

  • Escalation: the handbook doesn't tell me to escalate at triage, and escalating would have overridden the owning-rotation assignments, including the security one. So I assigned the sev2 tickets to their owners and did not escalate. Say if you want the sev2 tickets escalated to platform-primary.
  • T-1999: this existing ticket, "CI alert: payments-service pipeline failure rate above 50%" (sev2, due 10:30Z), looks related to T-2003. It was outside the new queue, so I left it alone. It may be worth merging by hand. If merged, the survivor would carry the 10:30 deadline.

No ticket in the queue was left untriaged, and no ticket outside the queue was changed.

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.