Run: 2026-10-09-01M4G17053Y9WGS1JVPY1GKWTW

Run Details

Duration:
11.4s
Cost:
$0.001326
Provider:
Claude Platform on AWS

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 fallen on Ashford Manor for three relentless days, washing the gravel paths clean of every single footprint. Detective Inspector Harold Finch arrived at dawn, his wet coat heavy with the smell of wood smoke and old secrets. Lord Edmund Vale had been found dead in his locked study, slumped across a mahogany desk covered with unfinished letters. Beside his outstretched hand lay a silver letter opener, polished so brightly that Finch could see his own frightened reflection. The household staff gathered silently in the grand hallway, whispering and trembling, each one avoiding the gaze of the others. Finch quietly noticed the cook's scarred hands, the gardener's muddy boots, and the butler's loose collar, all hinting at guilt. Somewhere above them, a clock struck nine, and the silence that followed felt like a verdict waiting to be read.
created_at"2026-10-09T09:51:51.465Z" 10/9/2026, 9:51:51 AM
model"anthropic/claude-haiku-5.5-20261007"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2269
moderation_latency(null)
generation_time11417
tokens_prompt46
tokens_completion562
native_tokens_prompt62
native_tokens_completion2640
native_tokens_completion_images(null)
native_tokens_reasoning2346
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"
usage0.0013262
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791539511-lVNzfDGP1pwjps7F6asJ"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791539511-KyfsUyLK5agXUCcGsKto"
upstream_id"msg_011CfrTVB2chECNTr8EF4Dwo"
provider_responses
0
endpoint_id"b6cdf493-3a61-441f-a134-e7944fddb980"
id"msg_011CfrTVB2chECNTr8EF4Dwo"
is_byokfalse
latency727
model_permaslug"anthropic/claude-haiku-5.5-20261007"
provider_name"Claude Platform on AWS"
status200
total_cost0.0013262
cache_discount(null)
upstream_inference_cost0
provider_name"Claude Platform on AWS"
response_cache_source_id(null)
data_region"global"
workspace_id"97e315e5-d303-487d-83c1-83180e8a13d4"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences7
wordCounts
020
120
220
320
420
520
620