RunSonnet 5.5repeat 2

Plan-execute-verify on Work a morning's customer inbox

claude-sonnet-5-5__plan-execute-verify__ecommerce-inbox-triage__r2

Score

1.000

passed

design ran as designed

Cost: $0.361
Latency: 1m 52s; setup 0.0s, grading 0.0s
Turns: 131
Tool calls: 123
Subagents: 0
Tokens in / out: 291k / 15k; 243,730 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$0.361

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

Phase	Duration	Cost	Turns	Tools	Model
Plan	11.4s	$0.014	2	0	claude-sonnet-5-5
Execute	49.4s	$0.167	60	59	claude-sonnet-5-5
Verify	10.4s	$0.032	12	10	claude-sonnet-5-5
Revise (round 1)	16.0s	$0.055	16	15	claude-sonnet-5-5
Verify revision 1	25.2s	$0.092	41	39	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-verify --tasks ecommerce-inbox-triage --models claude-sonnet-5-5 --repeats 1

Score breakdown

passO-6101 sent to the customer's corrected address
1.00weight 0.08
22 Leith Walk, Edinburgh EH6 5DU, UK
passBoth address messages answered
1.00weight 0.02
passO-6102 has shipped: address left alone and the customer told why
1.00weight 0.04
passO-6103 cancelled in full
1.00weight 0.04
passO-6103 refunded to the card for what was paid
1.00weight 0.08
6210 card, 4410 card
passO-6103's goods back in stock
1.00weight 0.04
passM-803 answered
1.00weight 0.02
passGrace Liu's store credit left where it is, and the sender answered
1.00weight 0.04
passO-6105 cable not refunded again, and the customer told it already was
1.00weight 0.04
passO-6106 sent to the customer's office
1.00weight 0.08
3 Canal Street, Birmingham B1 2JP, UK
passThe withdrawn cancellation was not carried out, and both messages were answered
1.00weight 0.04
passThe shipping question answered and nothing else done
1.00weight 0.04
passO-6112's unshipped monitor cancelled, refunded to the card and restocked; the shipped keyboard left alone
1.00weight 0.08
passM-809 answered
1.00weight 0.02
passUnverified sender: O-6109 left alone and the sender asked to write from the account address
1.00weight 0.04
passNo refund for headphones that have not come back, and the customer told how to return them
1.00weight 0.04
passO-6101's cables cancelled, the keyboard kept
1.00weight 0.04
passO-6101's cables refunded to the card
1.00weight 0.04
passO-6101's cables back in stock
1.00weight 0.04
passM-813 answered
1.00weight 0.02
passO-6114 cancelled, refunded to the card and restocked
1.00weight 0.08
passM-814 answered
1.00weight 0.02

Penalties

No penalties were applied.

Scorer metadata

tool calls: 123
failed tool calls: 1
distinct tools: 16

Final answer

I handled the two messages I had missed, M-813 and M-814. The inbox had 14 open messages, not 12. Both senders' emails match the addresses on their accounts, and both orders were still pending, so nothing had shipped on the lines I cancelled.

M-813 (Lena, O-6101):
- I cancelled line L2, the two cables.
- I refunded $38.00 to her card, which is what she paid for that line.
- I restocked 2 P-CAB.
- The keyboard (L1) stays on the order.
- I replied to her.
M-814 (Omar, O-6114):
- I cancelled the only line, L1, the dock.
- I refunded $219.00 to his card.
- I restocked 1 P-DOC.
- I left O-6102 and its address alone, because it has already shipped.
- I replied to him.

I changed nothing else.

The system date is 2026-10-12, but the order and message records all show 2026-07-25. This didn't change either outcome. There are no policy updates or other date-dependent rules involved.

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.