Run: 2026-07-25-01KYCPMJS1NSC0D8T28A124XMX

Run Details

Duration:
6.7s
Cost:
$0.006725
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 slate roof of Ashcombe House all night. Margaret Vane found the study door locked at precisely seven. She knocked, waited, then fetched the brass key from downstairs. The hinges groaned open onto a room gone terribly still. Lord Ashcombe sat slumped forward across his mahogany writing desk. His fountain pen had rolled to rest against the inkwell. A dark stain spread slowly outward beneath his left shoulder. Margaret did not scream, though her hands began to shake. She noted the window latch hanging loose in the frame. She noted the glass, two glasses, both drained of sherry. The clock on the mantel had stopped at eleven twenty. Someone had turned every single portrait to face the wall.
created_at"2026-07-25T13:15:07.943Z" 7/25/2026, 1:15:07 PM
model"anthropic/claude-opus-5-20260723"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1707
moderation_latency(null)
generation_time6559
tokens_prompt46
tokens_completion187
native_tokens_prompt60
native_tokens_completion257
native_tokens_completion_images(null)
native_tokens_reasoning0
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"
usage0.006725
router(null)
provider_responses
0
endpoint_id"76cb4608-f48c-483d-8da8-9957fb44244e"
id"msg_011CdNqWdxuMbBVNjXmoiEEc"
is_byokfalse
latency1707
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-1784985307-nh443TNag1qo9TKzRJOw"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1784985307-sk0WIjyX72tEyFak2g19"
upstream_id"msg_011CdNqWdxuMbBVNjXmoiEEc"
total_cost0.006725
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
sentences12
wordCounts
010
110
210
310
410
510
610
710
810
910
1010
1110