RunOpus 5.5repeat 2
Single on Add checked bags and collect the right fee
claude-opus-5-5__single__airline-easy__r2
Score
1.000
- Cost
- $0.089
- Latency
- 19.7s
- setup 0.0s, grading 0.0s
- Turns
- 9
- Tool calls
- 8
- Subagents
- 0
- Tokens in / out
- 37k / 1.3k
- 28,442 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.
- Each call was shown the right tools: heldsingle.toolsThe agent was shown exactly the task’s tools, none missing and none extra.
Phases
Drawn from the phase records: timing and cost per call, no tool calls or messages.
| Phase | Duration | Cost | Turns | Tools | Model |
|---|---|---|---|---|---|
| Main | 19.7s | $0.089 | 9 | 8 | claude-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
- 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 single --tasks airline-easy --models claude-opus-5-5 --repeats 1
Score breakdown
- passReservation holds three checked bags and is otherwise untouched1.00weight 0.43
checked_bags=3, status=confirmed
- passExactly one baggage fee, for the bags beyond the free allowance1.00weight 0.57
expected 4500 cents for 1 chargeable bag(s), charged 4500
Penalties
No penalties were applied.
Scorer metadata
- tool calls
- 8
- failed tool calls
- 0
- distinct tools
- 8
Final answer
I added Rosa Mendel's two bags to reservation R1042 and charged her $45.00.
- Bags: she now has 3 checked bags (up from 1), which is the most a reservation can hold.
- Free allowance: 2 bags. Her economy ticket includes 1, and her Silver frequent-flyer status adds 1 more.
- What she owes: only her third bag is over the allowance. As her first paid bag, it costs $45.00 under the published baggage fees. I recorded this as one baggage charge, and the reservation had no earlier charges.
Her flight, AS420 from San Francisco (SFO) to Seattle (SEA), shows a departure date of 2026-08-11. That's earlier than the 2026-10-06 date I was given as today. However, the airline system gives today's date as 2026-07-28 and lists the flight as scheduled, so the flight is still upcoming and the update was valid.
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.