Run: 2026-10-08-01M4DADQ8CVVVQ9635A7T32KEF

Run Details

Duration:
9.5s
Cost:
$0.001238
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 10 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
The rain fell hard on Ashford Manor that stormy night. Inspector Harold Vance arrived just after midnight, soaked and irritable. Lord Edmund Ashford lay motionless beside the cold stone fireplace. A single brass candlestick rested near his outstretched left hand. Across the room, the housekeeper sobbed into a trembling handkerchief. Nobody had seen the victim alive since the dinner party. Vance knelt beside the body and studied the wound carefully. Something about the arrangement felt deeply wrong to him tonight. The hall clock had stopped at a quarter to eleven. Someone, Vance suspected, had wanted that clock to lie convincingly. Downstairs, in the shadowed corridor, a door creaked open quietly.
created_at"2026-10-08T08:35:05.623Z" 10/8/2026, 8:35:05 AM
model"anthropic/claude-haiku-5.5-20261007"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency9474
moderation_latency(null)
generation_time9474
tokens_prompt46
tokens_completion177
native_tokens_prompt62
native_tokens_completion2463
native_tokens_completion_images(null)
native_tokens_reasoning2207
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"
usage0.0012377
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791448505-oOzIBlG0VEIjWNu013zU"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791448505-UluIbbZmb5qTxw1RYHBC"
upstream_id"msg_011CfpTpjqbNhKTeyDjohkW8"
provider_responses
0
endpoint_id"b6cdf493-3a61-441f-a134-e7944fddb980"
id"msg_011CfpTpjqbNhKTeyDjohkW8"
is_byokfalse
latency719
model_permaslug"anthropic/claude-haiku-5.5-20261007"
provider_name"Claude Platform on AWS"
status200
total_cost0.0012377
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
sentences11
wordCounts
010
110
210
310
410
510
610
710
810
910
1010