Run: 2026-02-24-01KJ8VJMVY24TD7T5N7J96HF5G

Run Details

Duration:
25.4s
Cost:
$0.043848
Provider:
Anthropic

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 old manor house stood completely silent in the fog. Detective Clara Mills arrived just before the clock struck midnight. Only a single candle flickered somewhere inside the dark hall. She noticed the body immediately upon entering the drawing room. Lord Harwick lay sprawled face down across the Persian rug. His cold right hand still clutched a shattered crystal glass. Nobody else was supposed to be in the old house. Yet Clara heard slow footsteps above her on the stairs. She slowly reached inside her coat and drew her pistol. The footsteps stopped abruptly, and then the candle went dark.
created_at"2026-02-24T22:16:07.815Z" 2/24/2026, 10:16:07 PM
model"anthropic/claude-4.6-sonnet-20260217"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency531
moderation_latency(null)
generation_time25364
tokens_prompt46
tokens_completion693
native_tokens_prompt61
native_tokens_completion2911
native_tokens_completion_images(null)
native_tokens_reasoning543
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"stop"
usage0.043848
router(null)
provider_responses
0
endpoint_id"6d408764-7dd7-4626-bb87-a6cc1589bc86"
id"msg_01LvnmVeNhGxRH9jMLVybYm3"
is_byokfalse
latency508
model_permaslug"anthropic/claude-4.6-sonnet-20260217"
provider_name"Anthropic"
status200
api_type"completions"
id"gen-1771971367-jjmrpJLGQDaXhJfiXVnX"
upstream_id"msg_01LvnmVeNhGxRH9jMLVybYm3"
total_cost0.043848
cache_discount(null)
upstream_inference_cost0
provider_name"Anthropic"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
010
110
210
310
410
510
610
710
810
910