ScaffoldBench

RunOpus 5.5repeat 1

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

claude-opus-5-5__plan-execute__support-monday-triage__r1

Score

0.951

wrong answer
design ran as designed
Cost
$0.545
Latency
2m 4s
setup 0.0s, grading 0.0s
Turns
76
Tool calls
73
Subagents
0
Tokens in / out
350k / 14k
321,548 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 27.4s, finished, 0 tool calls, $0.071
Execute: 27.4s to 2m 4s, finished, 73 tool calls, $0.474

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

PhaseDurationCostTurnsToolsModel
Plan27.4s$0.07120claude-opus-5-5
Execute1m 37s$0.4747473claude-opus-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-opus-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

  • passT-2015 graded sev1
    1.00weight 0.02

    severity=sev1

  • passT-2015 due 2026-03-23T09:10:00Z
    1.00weight 0.02

    sla_due_at=2026-03-23T09:10:00Z

  • passT-2015 assigned to E-201
    1.00weight 0.02

    assignee=E-201

  • passT-2016 graded sev4
    1.00weight 0.02

    severity=sev4

  • passT-2016 due 2026-03-26T17:00:00Z
    1.00weight 0.02

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

  • passT-2016 assigned to E-302
    1.00weight 0.02

    assignee=E-302

  • 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
73
failed tool calls
0
distinct tools
14

Final answer

I triaged all 16 tickets in the new queue, and the queue is now empty. That covers the 14 weekend tickets and two more (T-2015, T-2016) that arrived at 08:10Z while I was working. Triage time was the desk clock: Monday 2026-03-23 08:10Z. The plan said the date was 2026-10-06, a Tuesday, but the desk clock shows Monday, so I used the clock.

Closed as not service requests

  • T-2010: marketing email (a SyncFlow promotion).
  • T-2014: automatic out-of-office reply.

Neither had linked tickets.

Merged duplicates (the earliest report survives; no ticket had a deadline yet, so each survivor got today's triage deadline)

  • CRM search failures: T-2005 merged into T-2004. The knowledge base says all failing-search reports are the same incident. T-2004 is now department impact.
  • Payments builds failing since Saturday night: T-2012 merged into T-2003, which stays department impact.

I kept the Berlin VPN drops (T-2001) and the Lisbon VPN outage (T-2013) separate. They are different offices with different symptoms, and nothing shows a shared cause.

Severity, deadline and assignee
Severities come from the matrix. Engineers are whoever is on call in the owning rotation when the deadline falls.

TicketSeverityDeadlineAssignee
T-2001 VPN, teamsev3Mon 23 Mar 17:00ZE-303 Sanna Virtanen (backup; E-301 is on leave)
T-2013 VPN, departmentsev2Mon 23 Mar 12:10ZE-303 Sanna Virtanen (backup; E-301 is on leave)
T-2008 VPN, single usersev4Thu 26 Mar 17:00ZE-302 Marcus Feld
T-2016 VPN, single usersev4Thu 26 Mar 17:00ZE-302 Marcus Feld
T-2007 phishing, password entered on a fake pagesev2, security incidentMon 23 Mar 12:10ZE-601 Noor Haddad (security on-call)
T-2002 CRM, single usersev4Thu 26 Mar 17:00ZE-203 Amara Osei (backup; E-202 is on leave)
T-2004 CRM search, departmentsev2Mon 23 Mar 12:10ZE-201 Ines Kovac
T-2011 payroll, teamsev2Mon 23 Mar 12:10ZE-201 Ines Kovac
T-2006 payroll, single usersev2Mon 23 Mar 12:10ZE-201 Ines Kovac
T-2015 payroll, departmentsev1Mon 23 Mar 09:10ZE-201 Ines Kovac
T-2003 Payments builds, departmentsev2Mon 23 Mar 12:10ZE-101 Dana Whitfield
T-2009 build pipeline, single usersev4Thu 26 Mar 17:00ZE-102 Ravi Menon
  • T-2006: the matrix says sev3, but a knowledge-base amendment makes single-user payroll tickets sev2 during the March payroll close (20–31 March).
  • sev3 and sev4 deadlines: these count business hours only, starting when the desk opens at 09:00 Monday. Wednesday 25 March is a company holiday, which is why the sev4 tickets fall due on Thursday.
  • T-2016: I treated it as a normal VPN problem, not a security incident. It reports a token re-registration prompt, with no sign of phishing, exposed credentials or malware.

Things I did not do

  • Major incident: I didn't run the major-incident process or page anyone. No ticket has company-wide impact, and I couldn't find a major-incident runbook in the knowledge base.
  • Escalations: I didn't escalate any tickets. The plan asked me to, but the handbook only says where an escalation goes, not that triage must escalate. Escalating would also hand payroll, CRM, VPN and security tickets to engineers outside the rotations that own them, which the handbook forbids. Escalation is still open if any of these tickets need it, especially T-2015, which is sev1 and due at 09:10Z.

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.