Run: 2026-07-25-01KYCRHXHJBPS64B5Q389XBSVJ

Run Details

Duration:
16.3s
Cost:
$0.037900
Provider:
Amazon Bedrock

Evaluation summary

Score Evaluator
Details Link
100.00% Matches word count (details)

Model input

User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 10 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Rain hammered the greenhouse roof like impatient fingers on glass. Inspector Naomi Vale stopped just inside the fogged glass door. The air smelled of wet soil, crushed orchids, and copper. Beneath the tallest fern lay Hollis Grange, quite thoroughly dead. His left hand still gripped a pair of pruning shears. His right hand held nothing, which struck her as odd. Someone had arranged white roses carefully across his open eyes. Naomi crouched, avoiding the dark pool spreading toward her boots. Behind her, the young constable made a small wounded noise. Breathe through your mouth, she said, and do not vomit. Outside, six houseguests waited in a warm, brightly lit parlor. One of them had walked through this rain quite recently. Muddy footprints led from the door and back out again. Naomi stood, straightened her coat, and went to ask questions.
created_at"2026-07-25T13:48:37.822Z" 7/25/2026, 1:48:37 PM
model"anthropic/claude-opus-5-20260723"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3611
moderation_latency(null)
generation_time16188
tokens_prompt46
tokens_completion417
native_tokens_prompt60
native_tokens_completion1504
native_tokens_completion_images(null)
native_tokens_reasoning204
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
num_fetches(null)
web_search_engine(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"end_turn"
service_tier"default"
usage0.0379
router(null)
provider_responses
0
endpoint_id"76cb4608-f48c-483d-8da8-9957fb44244e"
id"msg_011CdNt4oHMqhEtbuSUoWJZk"
is_byokfalse
latency1208
model_permaslug"anthropic/claude-opus-5-20260723"
provider_name"Amazon Bedrock"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.18.0; linux; x64))"
http_referer(null)
request_id"req-1784987317-F9BBdPqt1zVRg2UuC0lp"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1784987317-hfHRGZm71Q3Xz4eR7rHf"
upstream_id"msg_011CdNt4oHMqhEtbuSUoWJZk"
total_cost0.0379
cache_discount(null)
upstream_inference_cost0
provider_name"Amazon Bedrock"
response_cache_source_id(null)
data_region"global"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences14
wordCounts
010
110
210
310
410
510
610
710
810
910
1010
1110
1210
1310