Loadbearing · checkpoint once, fork per mutation

haystack-answer-meta-2.8.0

Every declared input does what the pipeline claims. Found by running it.

forks from one checkpoint

8.09s

all 17 runs, in parallel (53.15s one after another)

6.6x

faster than running them in sequence

defects

One checkpoint, every fork

Every field, every mutation

field	should matter?	destroy	drop	nudge	verdict
request_id	no	same	same	same	inert
query	yes	moved	moved	moved	load-bearing
reply	yes	moved	moved	moved	load-bearing
meta.source_url	yes	moved	moved	moved	load-bearing
meta.policy_version	yes	moved	moved	moved	load-bearing

Baseline

input

request_id: req_8Kx2pd

query: Can I still return headphones after 20 days?

reply: No, the 14-day return window has passed, but the warranty covers a repair.

meta: {"source_url": "https://shop.example/help/returns-policy", "policy_version": "2026-09"}

output

answers: [{"data": "No, the 14-day return window has passed, but the warranty covers a repair.", "meta": {"model": "nemotron", "policy_version": "2026-09", "source_url"…