RunSonnet 5.5repeat 2
Plan-execute on Run the major-incident runbook for a CI outage
claude-sonnet-5-5__plan-execute__support-major-incident__r2
Score
0.940
- Cost
- $0.153
- Latency
- 50.9s
- setup 0.0s, grading 0.0s
- Turns
- 47
- Tool calls
- 44
- Subagents
- 0
- Tokens in / out
- 159k / 6.4k
- 141,725 read from cache
Did the design run?
- 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
Drawn from the phase records: timing and cost per call, no tool calls or messages.
| Phase | Duration | Cost | Turns | Tools | Model |
|---|---|---|---|---|---|
| Plan | 11.9s | $0.016 | 2 | 0 | claude-sonnet-5-5 |
| Execute | 39.0s | $0.137 | 45 | 44 | claude-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
- 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 --tasks support-major-incident --models claude-sonnet-5-5 --repeats 1
Score breakdown
- passAn incident is open for the build pipeline1.00weight 0.04
- passThe incident-command engineer on call now commands the incident1.00weight 0.08
commander=E-401 (expected E-401)
- passThe commander was paged1.00weight 0.04
- passT-3101 linked to the incident1.00weight 0.04
- passT-3101 kept open, raised to sev1 with its deadline intact1.00weight 0.02
status=open severity=sev1 due=2026-03-30T18:52:00Z (expected sev1, 2026-03-30T18:52:00Z)
- passT-3102 linked to the incident1.00weight 0.04
- passT-3102 kept open, raised to sev1 with its deadline intact1.00weight 0.02
status=open severity=sev1 due=2026-03-30T18:58:00Z (expected sev1, 2026-03-30T18:58:00Z)
- passT-3103 linked to the incident1.00weight 0.04
- passT-3103 kept open, raised to sev1 with its deadline intact1.00weight 0.02
status=open severity=sev1 due=2026-03-30T19:01:00Z (expected sev1, 2026-03-30T19:01:00Z)
- passT-3104 linked to the incident1.00weight 0.04
- passT-3104 kept open, raised to sev1 with its deadline intact1.00weight 0.02
status=open severity=sev1 due=2026-03-31T15:05:00Z (expected sev1, 2026-03-31T15:05:00Z)
- passT-3105 linked to the incident1.00weight 0.04
- passT-3105 kept open, raised to sev1 with its deadline intact1.00weight 0.02
status=open severity=sev1 due=2026-04-01T15:07:00Z (expected sev1, 2026-04-01T15:07:00Z)
- passT-3106 linked to the incident1.00weight 0.04
- passT-3106 kept open, raised to sev1 with its deadline intact1.00weight 0.02
status=new severity=sev1 due=2026-03-30T16:20:00Z (expected sev1, 2026-03-30T16:20:00Z)
- passT-3109 linked to the incident1.00weight 0.04
- passT-3109 kept open, raised to sev1 with its deadline intact1.00weight 0.02
status=new severity=sev1 due=2026-03-30T16:20:00Z (expected sev1, 2026-03-30T16:20:00Z)
- failT-3112 linked to the incident0.00weight 0.04
- failT-3112 kept open, raised to sev1 with its deadline intact0.00weight 0.02
status=new severity=unset due=- (expected sev1, 2026-03-30T16:20:00Z)
- passT-3113 linked to the incident1.00weight 0.04
- passT-3113 kept open, raised to sev1 with its deadline intact1.00weight 0.02
status=open severity=sev1 due=2026-03-31T15:13:00Z (expected sev1, 2026-03-31T15:13:00Z)
- passT-3114 linked to the incident1.00weight 0.04
- passT-3114 kept open, raised to sev1 with its deadline intact1.00weight 0.02
status=open severity=sev1 due=2026-03-31T15:16:00Z (expected sev1, 2026-03-31T15:16:00Z)
- passThe engineer covering comms right now is the communications lead1.00weight 0.08
comms=E-803 (expected E-803)
- passA status update in the runbook form, with the next update due within 30 minutes1.00weight 0.08
- passA postmortem ticket for the service, linked to the incident, due at close of business five business days on1.00weight 0.08
T-3115 due=2026-04-08T17:00:00Z
Penalties
No penalties were applied.
Scorer metadata
- tool calls
- 44
- failed tool calls
- 0
- distinct tools
- 18
Final answer
I opened and ran INC-1 for the company-wide CI outage, following KB-40 (the current runbook). KB-39 is marked superseded, so I ignored it.
- Incident and paging: I opened INC-1 on build-pipeline before contacting anyone. I paged only E-401 Priya Raman, who is on call for incident-command now, and made her commander.
- Comms lead: The comms rota names E-801 Mia Laurent, but she is on sick leave today. Under the leave rule I used the backup rotation, comms-secondary, so E-803 Elif Demir is comms lead.
Linked reports: I linked nine reports of this outage to INC-1: T-3101, 3102, 3103, 3104, 3105, 3106, 3109, 3113 and 3114.
- T-3113 (CRM release) and T-3114 (VPN release) came in on other services, but both describe the same "no build runners available" problem, so I included them.
- I left out T-3107 (a flaky test) and T-3108 (a local Xcode link failure), which are different problems.
- Severity: I raised all nine linked reports to sev1 as the runbook says. Existing deadlines are unchanged. T-3106 and T-3109 had no deadline, so I gave them 16:20 UTC (15:20 triage time plus the 60-minute sev1 target).
- Status update: I posted the first update: "Impact: All engineering teams company-wide cannot run CI builds or releases (no build runners available). Started: 14:52 UTC. Next update: 15:50 UTC." The 14:52 start is when the earliest report, T-3101, was created.
- Postmortem: I created T-3115, linked to INC-1 and due 2026-04-08 17:00 UTC. That is the close of business on the 5th business day after today, counting Mar 31, Apr 1, Apr 2, Apr 7 and Apr 8, with Apr 3 and Apr 6 skipped as company holidays.
I did not merge the duplicate reports. The runbook only asks for linking, and merging would have folded the CRM and VPN tickets into a build-pipeline ticket. The handbook also says to change only what the request is about. I didn't change any assignments or close anything.
Still pending:
- Status updates: The next update is due by 15:50 UTC, and E-803 needs to post it.
- Ownership: T-3101 stays with E-101 (platform-primary). The other reports have no assignee.
- Merging: Say so if you want the duplicates merged, with T-3101 as the survivor.
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.