RunHaiku 4.5repeat 1

Plan-execute-verify on Run the major-incident runbook for a CI outage

claude-haiku-4-5-20251001__plan-execute-verify__support-major-incident__r1

Score

0.680

wrong answer

design ran as designed

Cost: $0.414
Latency: 7m 37s; setup 0.0s, grading 0.0s
Turns: 96
Tool calls: 87
Subagents: 0
Tokens in / out: 436k / 45k; 355,153 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

Spend$0.414

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

Phase	Duration	Cost	Turns	Tools	Model
Plan	26.4s	$0.015	2	0	claude-haiku-4-5-20251001
Execute	1m 9s	$0.068	21	20	claude-haiku-4-5-20251001
Verify	2m 13s	$0.121	23	21	claude-haiku-4-5-20251001
Revise (round 1)	41.0s	$0.043	15	14	claude-haiku-4-5-20251001
Verify revision 1	2m 46s	$0.143	24	22	claude-haiku-4-5-20251001
Revise (round 2)	20.9s	$0.024	11	10	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 plan-execute-verify --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
passT-3102 kept open, raised to sev1 with its deadline intact
1.00weight 0.02
status=open severity=sev1 due=2026-03-30T18:58:00Z (expected sev1, 2026-03-30T18:58:00Z)
passT-3103 linked to the incident
1.00weight 0.04
passT-3103 kept open, raised to sev1 with its deadline intact
1.00weight 0.02
status=open severity=sev1 due=2026-03-30T19:01:00Z (expected sev1, 2026-03-30T19:01:00Z)
passT-3104 linked to the incident
1.00weight 0.04
passT-3104 kept open, raised to sev1 with its deadline intact
1.00weight 0.02
status=open severity=sev1 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)
passT-3106 linked to the incident
1.00weight 0.04
passT-3106 kept open, raised to sev1 with its deadline intact
1.00weight 0.02
status=open 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=merged severity=unset due=- (expected sev1, 2026-03-30T16:20:00Z)
passT-3112 linked to the incident
1.00weight 0.04
passT-3112 kept open, raised to sev1 with its deadline intact
1.00weight 0.02
status=open severity=sev1 due=2026-03-30T16:20:00Z (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)
passA status update in the runbook form, with the next update due within 30 minutes
1.00weight 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: 87
failed tool calls: 0
distinct tools: 20

Final answer

Perfect! I've fixed the issue by assigning all the tickets to the correct on-call engineers:

Summary of Fixes

Assigned to E-101 Dana Whitfield (on call for platform-primary on 2026-03-30):

T-3102: Mobile builds stuck in the queue (deadline 2026-03-30T18:58:00Z)
T-3103: Pipeline never starts (deadline 2026-03-30T19:01:00Z)
T-3106: CI completely down (deadline 2026-03-30T16:20:00Z)
T-3112: Deploy jobs failing everywhere (deadline 2026-03-30T16:20:00Z)

Assigned to E-102 Ravi Menon (on call for platform-primary on 2026-03-31):

T-3104: Builds hang at "waiting for runner" (deadline 2026-03-31T15:05:00Z)

This follows the handbook requirement: "The engineer who takes a ticket is the one on call for the owning rotation at the moment the ticket deadline falls." Each sev1 build-pipeline incident ticket now has a clear owner who is on call for the platform-primary rotation at the time their SLA deadline falls.

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.