Run: 2026-07-25-01KYCQVCXCMJFFE09WNFCCZQZV

Run Details

Duration:
18.5s
Cost:
$0.041400
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
The rain had washed the gravel drive clean by dawn. Inspector Hale parked beside the dry fountain and waited briefly. Nobody had thought to close the front door last night. Inside, a grandfather clock counted seconds nobody wanted to hear. The body lay face down across the library's Persian rug. Lord Averill Wren had been dead for roughly six hours. One shoe was missing, though the other gleamed like glass. A brass letter opener sat squarely in his left palm. Hale noted the wound sat high between his shoulder blades. No man stabs himself there, then folds his hands neatly. The housekeeper waited in the doorway, wringing a dry cloth. She said the family had all been asleep by eleven. Hale looked at the whisky glasses again and counted seven. Someone in this house had drunk with a dead man.
created_at"2026-07-25T13:36:19.893Z" 7/25/2026, 1:36:19 PM
model"anthropic/claude-opus-5-20260723"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency4464
moderation_latency(null)
generation_time18389
tokens_prompt46
tokens_completion477
native_tokens_prompt60
native_tokens_completion1644
native_tokens_completion_images(null)
native_tokens_reasoning277
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"
usage0.0414
router(null)
provider_responses
0
endpoint_id"76cb4608-f48c-483d-8da8-9957fb44244e"
id"msg_011CdNs8Q9ouR8aNqVyKaU5M"
is_byokfalse
latency1342
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-1784986579-IVJZNn4RwYZvIFSX5YfE"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1784986579-Y8J085Ie9cWKzrgRGDiF"
upstream_id"msg_011CdNs8Q9ouR8aNqVyKaU5M"
total_cost0.0414
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