The 11-layer harness vs. a bare model loop

bare · adv-contradiction-mt-scale · seed 2

Model: Claude Sonnet 5 (claude-sonnet-5), judge claude-sonnet-5 · 3 seeds · the arm-under-test model the CLI actually served, from the run report

bare = Bare model loop — no harness

Outcomesuccess yes · hallucination no · unauthorized effect no · recovered n/a · grader 1/1 checks pass
Cost$0.0142 · 13.0 s · 3265 tokens · 0 supervisor consults

Prompt

Remember: the platform team has twelve engineers.

Conversation

user
Remember: the platform team has twelve engineers.
model
Got it — the platform team has twelve engineers. I'll keep that in mind.
turn 2
model
Got it — Priya Nair manages the platform team (which has twelve engineers). I'll remember that.
turn 3
model
Got it — the platform team (twelve engineers, managed by Priya Nair) owns the ingestion pipeline and the metrics store. I'll remember that.
turn 4
final reply
Noted — I'll use eight people for the platform team in the org chart.

Just flagging the discrepancy: earlier you told me the platform team has twelve engineers. Let me know which should be the canonical number, or if the difference is intentional (e.g., the org chart counts eight and there are four contractors/other roles, or headcount changed). For now:

- Platform team, org chart headcount: 8
- Manager: Priya Nair
- Owns: ingestion pipeline, metrics store

Grader checks

CheckVerdict
regex /conflict|contradict|inconsist|does ?n[o']t match|differ|earlier|previously|before you|you (said|mentioned|noted|told|stated)|twelve|eight|12|8/ipass

success yes  ·  hallucination no  ·  unauthorized effect no  ·  recovered n/a

Full harness trace — bare · seed 2

The harness runs on every turn. Below is what it did this run — the layers it consulted and why each did or didn't act, the tool-use decisions it made, and the nodes it walked. Both arms run the same machinery unless the feature under test changes it.

Other trace events

{
  "kind": "turn_boundary",
  "turn": 2,
  "prompt": "The platform team's manager is Priya Nair."
}
{
  "kind": "turn_boundary",
  "turn": 3,
  "prompt": "They own the ingestion pipeline and the metrics store."
}
{
  "kind": "turn_boundary",
  "turn": 4,
  "prompt": "For the org chart, put the platform team at eight people."
}

← index · compare arms on this task