Run: 2026-04-24-01KPZV8X974708Y1Z9XMX97YVK

Run Details

Duration:
5.6s
Cost:
$0.009250
Provider:
Amazon Bedrock

Evaluation summary

Score Evaluator
Details Link
69.52% Matches word count (details)

Model input

User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 20 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
The rain hammered against the windows of Blackwood Manor as Inspector Harrow stepped carefully across the polished marble entrance hall. Candles flickered in iron sconces, casting restless shadows that seemed to dance along the walls like uneasy spirits. Lady Ashcombe lay motionless upon the crimson carpet, her pale fingers still clutching a torn fragment of yellowed parchment. Seven guests stood frozen in the drawing room doorway, their faces revealing shock, suspicion, and something darker beneath the surface. A single crystal goblet rested beside the body, its contents spilled across the floor in a dark, spreading stain. Harrow knelt slowly, studying the peculiar bruise encircling her wrist and the faint scent of bitter almonds lingering nearby. Thunder cracked overhead, rattling the ancient chandeliers and sending a tremor through the gathered witnesses who dared not speak a word. "Nobody leaves this house tonight," he announced quietly, his voice carrying the weight of every secret buried within these walls.
created_at"2026-04-24T13:36:07.989Z" 4/24/2026, 1:36:07 PM
model"anthropic/claude-4.7-opus-20260416"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1223
moderation_latency(null)
generation_time5493
tokens_prompt46
tokens_completion257
native_tokens_prompt65
native_tokens_completion357
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"
usage0.00925
router(null)
provider_responses
0
endpoint_id"0fa65117-00d9-4835-808d-9b68041d9ce4"
id"32e0af3d-09b8-4d8c-9605-5e82ad89ced3"
is_byokfalse
latency1223
model_permaslug"anthropic/claude-4.7-opus-20260416"
provider_name"Amazon Bedrock"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.14.1; linux; x64))"
http_referer(null)
request_id"req-1777037767-96HkTlNzVZAnAeNr5KzL"
session_id(null)
api_type"completions"
id"gen-1777037767-LqZDejzD9U4ceXqvbtOe"
upstream_id"32e0af3d-09b8-4d8c-9605-5e82ad89ced3"
total_cost0.00925
cache_discount(null)
upstream_inference_cost0
provider_name"Amazon Bedrock"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
69.52% Matches word count n/a
neededCleanfalse
sentences8
wordCounts
020
118
219
320
419
519
621
720