Run: 2026-02-24-01KJ8V8Q79FKNKNWE1H9226ZEA

Run Details

Duration:
14.9s
Cost:
$0.022923
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 stood silent beneath the pale morning sky. Detective Clara Morse arrived before anyone else had woken up. A broken window framed the scene like a dark painting. She pulled on her gloves before stepping through the door. The body of Lord Ashford lay cold on the floor. His face wore an expression Clara could not quite read. A crystal glass sat shattered near his outstretched right hand. The smell of bitter almonds lingered faintly in the air. Clara knelt down slowly, studying every detail she could find. Someone in this house had wanted Lord Ashford very dead.
created_at"2026-02-24T22:10:42.545Z" 2/24/2026, 10:10:42 PM
model"anthropic/claude-4.6-sonnet-20260217"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency455
moderation_latency(null)
generation_time14826
tokens_prompt46
tokens_completion732
native_tokens_prompt61
native_tokens_completion1516
native_tokens_completion_images(null)
native_tokens_reasoning587
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"
usage0.022923
router(null)
provider_responses
0
endpoint_id"6d408764-7dd7-4626-bb87-a6cc1589bc86"
id"msg_017A5yJKrt6HbnKN436Q3Eah"
is_byokfalse
latency436
model_permaslug"anthropic/claude-4.6-sonnet-20260217"
provider_name"Anthropic"
status200
api_type"completions"
id"gen-1771971042-hPbXMc65xlRFct0E7Td6"
upstream_id"msg_017A5yJKrt6HbnKN436Q3Eah"
total_cost0.022923
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