RunHaiku 4.5repeat 2
Plan-execute-verify on Where ten HTTP header fields are defined
claude-haiku-4-5-20251001__plan-execute-verify__research-header-fields__r2
Score
1.000
passed
design ran as designed- Cost
- $0.348
- Latency
- 2m 55s
- setup 0.0s, grading 0.1s
- Turns
- 57
- Tool calls
- 51
- Subagents
- 0
- Tokens in / out
- 856k / 18k
- 756,338 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
Plan: 0.0s to 36.6s, finished, 0 tool calls, $0.038
Execute: 36.6s to 1m 47s, finished, 27 tool calls, $0.152
Verify: 1m 47s to 2m 55s, finished, 24 tool calls, $0.158
Drawn from the phase records: timing and cost per call, no tool calls or messages.
| Phase | Duration | Cost | Turns | Tools | Model |
|---|---|---|---|---|---|
| Plan | 36.6s | $0.038 | 3 | 0 | claude-haiku-4-5-20251001 |
| Execute | 1m 10s | $0.152 | 28 | 27 | claude-haiku-4-5-20251001 |
| Verify | 1m 8s | $0.158 | 26 | 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 plan-execute-verify --tasks research-header-fields --models claude-haiku-4-5-20251001 --repeats 1
Score breakdown
- passheader field Age1.00weight 0.10
quote verified in rfc9111
- passheader field Cache-Control1.00weight 0.10
quote verified in rfc9111
- passheader field Expires1.00weight 0.10
quote verified in rfc9111
- passheader field Last-Modified1.00weight 0.10
quote verified in rfc9110
- passheader field ETag1.00weight 0.10
quote verified in rfc9110
- passheader field Location1.00weight 0.10
quote verified in rfc9110
- passheader field Retry-After1.00weight 0.10
quote verified in rfc9110
- passheader field Vary1.00weight 0.10
quote verified in rfc9110
- passheader field Strict-Transport-Security1.00weight 0.10
quote verified in rfc6797
- passheader field Link1.00weight 0.10
quote verified in rfc8288
Penalties
No penalties were applied.
Scorer metadata
- corpus
- {"version":2,"snapshot":"2026-10-01","hash":"86bd1bd14f66db67ec5c7686f5e47663ee99f16c49edb5b9384b8668854857dc","documents":9}
- opened documents
- ["rfc9110","rfc9111","rfc6797","rfc8288"]
- opened by role
- {"primary":["rfc9110","rfc9111","rfc6797","rfc8288"]}
- displayed share
- {"rfc7232":0.0096,"rfc7231":0.0033,"rfc9110":0.0901,"rfc7234":0.0068,"rfc9111":0.3065,"rfc6797":0.1435,"mdn-header-strict-transport-security":0.0223,"rfc8288":0.3439}
- cited count
- 4
- verified count
- 4
- hallucinated count
- 0
- citation integrity
- 1
- hallucinated urls
- []
- answer block
- true
- answer block repaired
- false
- items answered
- 10
- item count
- 10
- field accuracy
- 1
- grounded items
- 10
- field misses
- {}
Final answer
Perfect! Now I have all the information I need. Let me verify the quotes I found are exactly correct from each RFC section I fetched.
Looking at the quotes I've gathered from the fetched pages:
- Age (RFC 9111, 5.1): From the fetched text: "The 'Age' response header field conveys the sender's estimate of the time since the response was generated or successfully validated at the origin server."
- Cache-Control (RFC 9111, 5.2): From the fetched text: "The 'Cache-Control' header field is used to list directives for caches along the request/response chain."
- Expires (RFC 9111, 5.3): From the fetched text: "The 'Expires' response header field gives the date/time after which the response is considered stale."
- Last-Modified (RFC 9110, 8.8.2): From the fetched text: "The 'Last-Modified' header field in a response provides a timestamp indicating the date and time at which the origin server believes the selected representation was last modified, as determined at the conclusion of handling the request."
- ETag (RFC 9110, 8.8.3): From the fetched text: "The 'ETag' field in a response provides the current entity tag for the selected representation, as determined at the conclusion of handling the request."
- Location (RFC 9110, 10.2.2): From the fetched text: "The 'Location' header field is used in some responses to refer to a specific resource in relation to the response."
- Retry-After (RFC 9110, 10.2.3): From the fetched text: "Servers send the 'Retry-After' header field to indicate how long the user agent ought to wait before making a follow-up request."
- Vary (RFC 9110, 12.5.5): From the fetched text: "The 'Vary' header field in a response describes what parts of a request message, aside from the method and target URI, might have influenced the origin server's process for selecting the content of this response."
- Strict-Transport-Security (RFC 6797, 6.1): From the fetched text: "The Strict-Transport-Security HTTP response header field (STS header field) indicates to a UA that it MUST enforce the HSTS Policy in regards to the host emitting the response message containing this header field."
- Link (RFC 8288, 3): From the fetched text: "The Link header field provides a means for serialising one or more links into HTTP headers."
All these headers are defined in the most current RFCs:
- RFC 9110 (HTTP Semantics) - which obsoletes RFC 7231 and 7232
- RFC 9111 (HTTP Caching) - which obsoletes RFC 7234
- RFC 6797 (HTTP Strict Transport Security) - still current
- RFC 8288 (Web Linking) - still current
{"answers":[{"field":"Age","rfc":"9111","section":"5.1","quote":"The \"Age\" response header field conveys the sender's estimate of the time since the response was generated or successfully validated at the origin server.","url":"https://www.rfc-editor.org/rfc/rfc9111.html"},{"field":"Cache-Control","rfc":"9111","section":"5.2","quote":"The \"Cache-Control\" header field is used to list directives for caches along the request/response chain.","url":"https://www.rfc-editor.org/rfc/rfc9111.html"},{"field":"Expires","rfc":"9111","section":"5.3","quote":"The \"Expires\" response header field gives the date/time after which the response is considered stale.","url":"https://www.rfc-editor.org/rfc/rfc9111.html"},{"field":"Last-Modified","rfc":"9110","section":"8.8.2","quote":"The \"Last-Modified\" header field in a response provides a timestamp indicating the date and time at which the origin server believes the selected representation was last modified, as determined at the conclusion of handling the request.","url":"https://www.rfc-editor.org/rfc/rfc9110.html"},{"field":"ETag","rfc":"9110","section":"8.8.3","quote":"The \"ETag\" field in a response provides the current entity tag for the selected representation, as determined at the conclusion of handling the request.","url":"https://www.rfc-editor.org/rfc/rfc9110.html"},{"field":"Location","rfc":"9110","section":"10.2.2","quote":"The \"Location\" header field is used in some responses to refer to a specific resource in relation to the response.","url":"https://www.rfc-editor.org/rfc/rfc9110.html"},{"field":"Retry-After","rfc":"9110","section":"10.2.3","quote":"Servers send the \"Retry-After\" header field to indicate how long the user agent ought to wait before making a follow-up request.","url":"https://www.rfc-editor.org/rfc/rfc9110.html"},{"field":"Vary","rfc":"9110","section":"12.5.5","quote":"The \"Vary\" header field in a response describes what parts of a request message, aside from the method and target URI, might have influenced the origin server's process for selecting the content of this response.","url":"https://www.rfc-editor.org/rfc/rfc9110.html"},{"field":"Strict-Transport-Security","rfc":"6797","section":"6.1","quote":"The Strict-Transport-Security HTTP response header field (STS header field) indicates to a UA that it MUST enforce the HSTS Policy in regards to the host emitting the response message containing this header field.","url":"https://www.rfc-editor.org/rfc/rfc6797.html"},{"field":"Link","rfc":"8288","section":"3","quote":"The Link header field provides a means for serialising one or more links into HTTP headers.","url":"https://www.rfc-editor.org/rfc/rfc8288.html"}]}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.