Run: 2026-10-09-01M4FXZE4DDEBT4CHXX75SAGMR

Run Details

Duration:
2.2s
Cost:
$0.000118
Provider:
Claude Platform on AWS

Evaluation summary

Score Evaluator
Details Link
84.45% 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 harder on the silent manor tonight. Detective Marcus Hale stepped through the broken front door. Crime scene tape fluttered weakly across the marble staircase ahead. Nobody had touched the body lying beneath the chandelier. Victoria Ashford had been found face down near the fireplace. Her left hand clutched a torn scrap of blue silk. Hale knelt slowly and studied the faint bruise on her neck. Someone had wanted this death to look accidental, certainly. Behind him, Officer Dana Price cleared her throat nervously. "The housekeeper swears she heard voices around midnight," Dana whispered.
created_at"2026-10-09T08:55:17.908Z" 10/9/2026, 8:55:17 AM
model"anthropic/claude-haiku-5.5-20261007"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency674
moderation_latency(null)
generation_time2217
tokens_prompt46
tokens_completion155
native_tokens_prompt62
native_tokens_completion224
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"
usage0.0001182
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791536117-LZFU026cJtgWBZB6zBEY"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791536117-Bh1VFyQt0AAoMUj1Caoe"
upstream_id"msg_011CfrPB1xCLTYFUhKuGRrHz"
provider_responses
0
endpoint_id"b6cdf493-3a61-441f-a134-e7944fddb980"
id"msg_011CfrPB1xCLTYFUhKuGRrHz"
is_byokfalse
latency674
model_permaslug"anthropic/claude-haiku-5.5-20261007"
provider_name"Claude Platform on AWS"
status200
total_cost0.0001182
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
84.45% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
09
19
210
39
410
510
611
79
89
910