Run: 2026-10-08-01M4DYQVBM6S296BN3PA44PZNE

Run Details

Duration:
3.1s
Cost:
$0.000161
Provider:
Claude Platform on AWS

Evaluation summary

Score Evaluator
Details Link
54.47% 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 fallen steadily since midnight over Ashford Manor. Detective Inspector Helen Marsh stepped carefully across the wet gravel. Nobody had touched the body lying beneath the great oak tree. Her partner, Sergeant Tom Riley, held an umbrella above her head. The victim was Lord Edmund Vale, owner of the estate for decades. A single gunshot wound marked his left temple, neat and deliberate. Beside him lay a silver pocket watch, stopped at quarter past eleven. Helen crouched low and studied the dark stains spreading through the mud. "Someone wanted this to look like a suicide," Tom murmured quietly. Helen shook her head, noticing the missing glove on the dead man's hand. Upstairs, a curtain shifted in the east window of the silent house. Helen rose slowly, her eyes fixed on that small and sudden movement.
created_at"2026-10-08T14:30:09.025Z" 10/8/2026, 2:30:09 PM
model"anthropic/claude-haiku-5.5-20261007"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3008
moderation_latency(null)
generation_time3008
tokens_prompt46
tokens_completion209
native_tokens_prompt62
native_tokens_completion310
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"
usage0.0001612
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791469809-f61TG61RCC8HwoRq7N9m"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791469809-2r9cO8rZdDF9Y02EhM6y"
upstream_id"msg_011Cfpvu7d2wnk8UqubSHqFh"
provider_responses
0
endpoint_id"b6cdf493-3a61-441f-a134-e7944fddb980"
id"msg_011Cfpvu7d2wnk8UqubSHqFh"
is_byokfalse
latency875
model_permaslug"anthropic/claude-haiku-5.5-20261007"
provider_name"Claude Platform on AWS"
status200
total_cost0.0001612
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
54.47% Matches word count n/a
neededCleanfalse
sentences12
wordCounts
010
110
211
311
412
511
612
712
811
913
1012
1112