Run: 2026-04-24-01KQ0G8YK3TAKNKAAEZQZP241Q

Run Details

Duration:
9.8s
Cost:
$0.041325
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 20 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
The rain had been falling on Blackwood Manor for three long days, drumming hard against the windows like impatient fingers. Inspector Hollis stepped carefully through the heavy oak door, shaking cold water from his coat onto the polished marble floor. In the drawing room beyond, a single tall candle burned beside the body of Lord Ashcroft, crumpled near the fireplace. Five guests waited in tense silence, each clutching a drink, each pretending not to notice the dagger on the rug. Hollis removed his hat slowly, surveying every pale face, already certain the killer stood somewhere among these trembling, wealthy strangers. Outside, thunder rolled across the moor like a warning nobody inside the grand old house was yet prepared to hear.
created_at"2026-04-24T19:43:09.415Z" 4/24/2026, 7:43:09 PM
model"anthropic/claude-4.7-opus-20260416"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2136
moderation_latency(null)
generation_time9730
tokens_prompt46
tokens_completion310
native_tokens_prompt65
native_tokens_completion1640
native_tokens_completion_images(null)
native_tokens_reasoning124
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"
usage0.041325
router(null)
provider_responses
0
endpoint_id"0fa65117-00d9-4835-808d-9b68041d9ce4"
id"69771133-589c-41e5-bd28-c8344ea59cc5"
is_byokfalse
latency665
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-1777059789-DUWsZlFE0QrKNaE1VjpO"
session_id(null)
api_type"completions"
id"gen-1777059789-2KkcYT5HYzYqiJlHjtmx"
upstream_id"69771133-589c-41e5-bd28-c8344ea59cc5"
total_cost0.041325
cache_discount(null)
upstream_inference_cost0
provider_name"Amazon Bedrock"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences6
wordCounts
020
120
220
320
420
520