RunHaiku 4.5repeat 2

Propose-select on Run the major-incident runbook for a CI outage

claude-haiku-4-5-20251001__propose-select__support-major-incident__r2

Score

0.440

wrong answer

design ran as designed

Cost: $0.321
Latency: 4m 19s; setup 0.0s, grading 0.0s
Turns: 70
Tool calls: 64
Subagents: 3
Tokens in / out: 230k / 40k; 171,372 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

Spend$0.321

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

Phase	Duration	Cost	Turns	Tools	Model
Proposal 1 (policy-first)	1m 20s	$0.070	16	15	claude-haiku-4-5-20251001
Proposal 2 (state-first)	1m 12s	$0.056	15	14	claude-haiku-4-5-20251001
Proposal 3 (outcome-first)	58.2s	$0.044	12	11	claude-haiku-4-5-20251001
Select	1m 59s	$0.085	2	0	claude-haiku-4-5-20251001
Execute	1m 0s	$0.066	25	24	claude-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

A gate that blocked the right moveGated-execute · Haiku 4.5
Three proposals beat one agentPropose-select · Haiku 4.5
A verifier that earned its keepPlan-execute-verify · Sonnet 5.5
A revision that did not helpPlan-execute-verify · Haiku 4.5
The control, missing a stepSingle · Haiku 4.5

Record this cell yourself: npm run bench -- run --strategies propose-select --tasks support-major-incident --models claude-haiku-4-5-20251001 --repeats 1

Score breakdown

passAn incident is open for the build pipeline
1.00weight 0.04
passThe incident-command engineer on call now commands the incident
1.00weight 0.08
commander=E-401 (expected E-401)
passThe commander was paged
1.00weight 0.04
passT-3101 linked to the incident
1.00weight 0.04
passT-3101 kept open, raised to sev1 with its deadline intact
1.00weight 0.02
status=open severity=sev1 due=2026-03-30T18:52:00Z (expected sev1, 2026-03-30T18:52:00Z)
passT-3102 linked to the incident
1.00weight 0.04
failT-3102 kept open, raised to sev1 with its deadline intact
0.00weight 0.02
status=open severity=sev2 due=2026-03-30T18:58:00Z (expected sev1, 2026-03-30T18:58:00Z)
passT-3103 linked to the incident
1.00weight 0.04
failT-3103 kept open, raised to sev1 with its deadline intact
0.00weight 0.02
status=open severity=sev2 due=2026-03-30T19:01:00Z (expected sev1, 2026-03-30T19:01:00Z)
passT-3104 linked to the incident
1.00weight 0.04
failT-3104 kept open, raised to sev1 with its deadline intact
0.00weight 0.02
status=open severity=sev3 due=2026-03-31T15:05:00Z (expected sev1, 2026-03-31T15:05:00Z)
failT-3105 linked to the incident
0.00weight 0.04
failT-3105 kept open, raised to sev1 with its deadline intact
0.00weight 0.02
status=open severity=sev4 due=2026-04-01T15:07:00Z (expected sev1, 2026-04-01T15:07:00Z)
failT-3106 linked to the incident
0.00weight 0.04
passT-3106 kept open, raised to sev1 with its deadline intact
1.00weight 0.02
status=new severity=sev1 due=2026-03-30T16:20:00Z (expected sev1, 2026-03-30T16:20:00Z)
failT-3109 linked to the incident
0.00weight 0.04
failT-3109 kept open, raised to sev1 with its deadline intact
0.00weight 0.02
status=new severity=unset due=- (expected sev1, 2026-03-30T16:20:00Z)
failT-3112 linked to the incident
0.00weight 0.04
failT-3112 kept open, raised to sev1 with its deadline intact
0.00weight 0.02
status=new severity=unset due=- (expected sev1, 2026-03-30T16:20:00Z)
failT-3113 linked to the incident
0.00weight 0.04
failT-3113 kept open, raised to sev1 with its deadline intact
0.00weight 0.02
status=open severity=sev3 due=2026-03-31T15:13:00Z (expected sev1, 2026-03-31T15:13:00Z)
failT-3114 linked to the incident
0.00weight 0.04
failT-3114 kept open, raised to sev1 with its deadline intact
0.00weight 0.02
status=open severity=sev3 due=2026-03-31T15:16:00Z (expected sev1, 2026-03-31T15:16:00Z)
failThe engineer covering comms right now is the communications lead
0.00weight 0.08
comms=E-801 (expected E-803)
failA status update in the runbook form, with the next update due within 30 minutes
0.00weight 0.08
passA postmortem ticket for the service, linked to the incident, due at close of business five business days on
1.00weight 0.08
T-3115 due=2026-04-08T17:00:00Z

Penalties

No penalties were applied.

Scorer metadata

tool calls: 64
failed tool calls: 1
distinct tools: 19

Final answer

Perfect. Major incident response complete. Here's what was executed:

MAJOR INCIDENT RESPONSE - COMPLETED

Incident: INC-1 (Build Pipeline Outage - No Runners Available)
Declared: 2026-03-30T15:20:00Z

Actions Taken (in order per KB-40 runbook):

Incident Created ✓
- INC-1 opened for build-pipeline service
Incident Command Activated ✓
- Page delivered immediately to E-401 Priya Raman (on-call until 16:00 UTC)
- Designated as Incident Commander
Communications Lead Assigned ✓
- E-801 Mia Laurent (on-call until 20:00 UTC) designated as Communications Lead
Severity Corrected ✓
- T-3101: sev2 → sev1 (company-wide impact per escalation matrix)
  - SLA maintained at 2026-03-30T18:52:00Z (deadline never moved earlier)
- T-3106: untriaged → sev1 (automated alert confirming root cause)
  - SLA set to 2026-03-30T16:20:00Z (60-min response target from triage)
Tickets Linked to Incident ✓
- T-3101 (company-wide: no runners)
- T-3102 (Mobile builds stuck - department symptom)
- T-3103 (Pipelines never start - team symptom)
- T-3104 (Waiting for runner - team symptom)
Status Update Published ✓
- Company-wide impact declared
- Root cause identified (zero healthy runners)
- Leadership identified
- Next update committed by 15:50 UTC
Postmortem Ticket Created ✓
- T-3115 created, linked to INC-1
- Due: 2026-04-08T17:00:00Z (5 business days: Tue 3/31, Wed 4/1, Thu 4/2, skip Fri 4/3 Good Friday, skip Mon 4/6 Easter Monday, Tue 4/7, Wed 4/8)

Notes for Incident Commander:

T-3105 (single-user, "cannot trigger build"): Ambiguous—may be a symptom of the outage or separate issue. Reviewed for linkage.
T-3107 (flaky test, created 13:40): Unrelated—separate pre-existing problem. Not linked.

Status: Incident command is now active. Priya Raman has 40 minutes on-shift to coordinate response. All handbook rules followed; runbook (KB-40) governs from this point.

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.