Run: 2026-02-24-01KJ8WEYHTR9BZGH7H559C67B9

Run Details

Duration:
28.5s
Cost:
$0.045918
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 sat silent beneath the pale October moon. Detective Clara Voss arrived first, her flashlight cutting through fog. Someone had called it in at half past eleven tonight. The iron gate groaned as she pushed it slowly open. Leaves crunched beneath her boots on the long stone path. The front door was already ajar, light spilling outward softly. She stepped inside and immediately noticed the smell of copper. A grandfather clock ticked loudly in the dim entrance hall. The body of Lord Ashworth lay sprawled across the floor. His right hand clutched a torn piece of red fabric. Clara knelt beside him and pulled out her worn notebook. Whoever had done this was careful, deliberate, and very cold. No weapon rested nearby, no glass shattered on the ground. She stood and scanned the room with her trained eyes. A single wine glass sat untouched on the oak table. Two chairs were pulled out, as if guests had left. This was no robbery; nothing valuable had been taken away. Lord Ashworth had been expecting someone he trusted that evening. Clara whispered quietly, knowing the dead never give their answers. She was going to find out who had done this.
created_at"2026-02-24T22:31:35.234Z" 2/24/2026, 10:31:35 PM
model"anthropic/claude-4.6-sonnet-20260217"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency811
moderation_latency(null)
generation_time28422
tokens_prompt46
tokens_completion1157
native_tokens_prompt61
native_tokens_completion3049
native_tokens_completion_images(null)
native_tokens_reasoning866
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"
usage0.045918
router(null)
provider_responses
0
endpoint_id"6d408764-7dd7-4626-bb87-a6cc1589bc86"
id"msg_01BmXUTxrPxcZgcwqqsLBXQi"
is_byokfalse
latency810
model_permaslug"anthropic/claude-4.6-sonnet-20260217"
provider_name"Anthropic"
status200
api_type"completions"
id"gen-1771972295-OEYbChoiqU64ZAkLzcOZ"
upstream_id"msg_01BmXUTxrPxcZgcwqqsLBXQi"
total_cost0.045918
cache_discount(null)
upstream_inference_cost0
provider_name"Anthropic"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences20
wordCounts
010
110
210
310
410
510
610
710
810
910
1010
1110
1210
1310
1410
1510
1610
1710
1810
1910