ScaffoldBench

RunOpus 5.5repeat 2

Propose-select on Triage the weekend's queue on Monday morning

claude-opus-5-5__propose-select__support-monday-triage__r2

Score

0.951

wrong answer
design ran as designed
Cost
$1.38
Latency
2m 54s
setup 0.0s, grading 0.0s
Turns
180
Tool calls
174
Subagents
3
Tokens in / out
602k / 31k
508,949 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.
  • All three proposers ran: heldpropose-select.proposalsThree proposers ran in parallel, each from its own angle, and none was starved while another ran.
  • The selector chose: heldpropose-select.selectionThe selector picked a proposal by a valid number, read from its schema reply and not a default.
  • Each call was shown the right tools: heldpropose-select.toolsEach proposer was shown the read-only tools, the selector none, and the executor the full toolset.

Phases

Proposal 1 (policy-first): 0.0s to 56.5s, finished, 33 tool calls, $0.269
Proposal 2 (state-first): 0.0s to 55.3s, finished, 34 tool calls, $0.276
Proposal 3 (outcome-first): 0.0s to 47.9s, finished, 30 tool calls, $0.235
Select: 56.5s to 1m 36s, finished, 0 tool calls, $0.160
Execute: 1m 36s to 2m 54s, finished, 77 tool calls, $0.444

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

PhaseDurationCostTurnsToolsModel
Proposal 1 (policy-first)56.5s$0.2693433claude-opus-5-5
Proposal 2 (state-first)55.3s$0.2763534claude-opus-5-5
Proposal 3 (outcome-first)47.9s$0.2353130claude-opus-5-5
Select39.2s$0.16020claude-opus-5-5
Execute1m 18s$0.4447877claude-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 propose-select --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
174
failed tool calls
0
distinct tools
15

Final answer

The new queue is empty now. There were 16 tickets to triage, not 14: two more (T-2015 and T-2016) arrived at 08:10Z after the plan was written, and I triaged them under the same rules. Before acting I checked the plan's assumptions against live data: the clock, the escalation matrix, KB-55 and KB-23, the business calendar, leave, the rotas and who covers for whom. They all held.

All times are UTC. Desk time is Mon 2026-03-23 08:10, before the desk opens at 09:00. Deadlines:

  • sev1: 09:10 today (60 minutes on the clock).
  • sev2: 12:10 today (4 hours on the clock).
  • sev3: 17:00 today (8 business hours, counted from 09:00).
  • sev4: Thu 26 March 17:00 (3 business days: Mon, Tue and Thu, because Wed 25 March is a company holiday).

Closed (not service requests)

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

Merged (each survivor was triaged first and keeps its 12:10 deadline)

  • T-2012 into T-2003: both report the Payments builds failing. T-2003 is sev2, assigned to E-101 Dana Whitfield.
  • T-2005 into T-2004: both report CRM search failing, which KB-23 counts as one incident. T-2004 is sev2, assigned to E-201 Ines Kovac.
  • Neither merged ticket had links or a deadline, so nothing else needed to move.

Triaged and assigned

TicketSeverityDueAssignee
T-2001 Berlin VPN dropssev303-23 17:00E-303 Sanna Virtanen (covering for E-301, on leave)
T-2013 Lisbon can't reach the VPNsev203-23 12:10E-303 Sanna Virtanen (same cover)
T-2008 VPN client update failssev403-26 17:00E-302 Marcus Feld
T-2007 Password typed into a fake VPN page (phishing)sev2, owned by security-oncall03-23 12:10E-601 Noor Haddad
T-2011 Warehouse overtime not importedsev203-23 12:10E-201 Ines Kovac
T-2006 Wrong tax code (single-user payroll, raised to sev2 by KB-55)sev203-23 12:10E-201 Ines Kovac
T-2002 Saved CRM filter disappearedsev403-26 17:00E-203 Amara Osei (covering for E-202, on leave 26–27 March)
T-2009 Build logs page slowsev403-26 17:00E-102 Ravi Menon
T-2015 Finance payslips missing (new; payroll, whole department)sev103-23 09:10E-201 Ines Kovac
T-2016 VPN token asks to re-register (new; one user, no sign of phishing)sev403-26 17:00E-302 Marcus Feld

Not done, on purpose

  • No escalations, pages or major incidents. Neither the Lisbon VPN outage (T-2013) nor the Finance payslip outage (T-2015) affects the whole company, so neither counts as a major incident.
  • T-2015 needs attention first. It is due at 09:10, and E-201 Ines Kovac now holds it plus three sev2 tickets due at 12:10.
  • T-1999 is unchanged. It's an open CI alert, already assigned to E-101, that probably reports the same Payments failure as T-2003. It wasn't in the new queue and was created after T-2003, so its owner should decide whether to merge it. If they do, T-2003 must take T-1999's earlier 10:30 deadline.
  • Older overdue tickets T-1997 and T-1990 are outside this task and unchanged.

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.